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Lighting Forum
Angel Eyes, DDEs, lighted rings, Clear Turn Signals, LEDs, Xenon, HID, or Bi-Xenon. If it lights up and you want to discuss it, post here!

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Old 11-24-2008, 09:13 PM   #41
bigfatvr6prik
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Thanks Seth!
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Old 11-24-2008, 09:19 PM   #42
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Oh btw...any idea where is # 12 located? Dealer said its behind the bumper and I took everything off but was'nt there . Now they say it "might" be behind the glove box but sillie has'nt seen his so I am doubt ful about it. Any ideas?
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Old 11-24-2008, 09:53 PM   #43
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Behind the glove box I am pretty sure BMW info does not show it. Looking at the schematics there may be other issues to contend with. like the line bus and rear level sensors
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Old 11-24-2008, 11:33 PM   #44
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Quote:
Originally Posted by jbeurotech View Post
Behind the glove box I am pretty sure BMW info does not show it. Looking at the schematics there may be other issues to contend with. like the line bus and rear level sensors
But I already had Auto Levelling before. I am just after the Dynamic (side to side movement of the projector's). Perhaps you are getting mixed up here
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Old 11-24-2008, 11:59 PM   #45
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damn maybe if it doesn't rain tomorrow or wednesday, i'll try tracing it back to take a look at the unit. do you have a picture of what it looks like, so when i'm tracing it back from the headlights i know what i'm looking at?
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Old 11-26-2008, 10:44 AM   #46
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Originally Posted by jbeurotech View Post
Behind the glove box I am pretty sure BMW info does not show it. Looking at the schematics there may be other issues to contend with. like the line bus and rear level sensors
1) Do you mean to say it is indeed behind the glove box? (I can't find it - looked behind the glove box and behind the bumper like the dealer said but no cigar)

2) In you opinion if I already have auto leveling on the car do I still need to look at any other schematics?

Thanks.
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Old 11-26-2008, 11:03 AM   #47
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Quote:
Originally Posted by bigfatvr6prik View Post
1) Do you mean to say it is indeed behind the glove box? (I can't find it - looked behind the glove box and behind the bumper like the dealer said but no cigar)

2) In you opinion if I already have auto leveling on the car do I still need to look at any other schematics?

Thanks.
Pretty sure its behind the glove box again i don't have any inof that shows exact location.

Other wiring may involve the lin bus system.
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Old 11-26-2008, 04:39 PM   #48
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you need to look at the schematics for the adaptive at least.
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Old 11-26-2008, 07:38 PM   #49
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you need to look at the schematics for the adaptive at least.
Agreed....Wish I can find it somewhere.
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Old 11-26-2008, 07:40 PM   #50
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wish i can even find that module you're talking about lol
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Old 11-26-2008, 10:45 PM   #51
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wish i can even find that module you're talking about lol
If dealers can't find it...who am i to find it i guess....
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Old 11-27-2008, 02:46 AM   #52
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yea, i'll try taking a look around i guess. do you have a picture of the module? that would help as a reference while i'm looking around.
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Old 02-09-2009, 03:44 PM   #53
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Originally Posted by bigfatvr6prik View Post
Guess this fkin thing just got more complicated....new LCM is gonna cost me my third leg i think....can't even find it @ realoem. If i try the same keyword search "light check control module", it finds it.
Can't you just get your LCM reprogrammed for adaptives and put in the extra module (saves you buying an extra part)?
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Old 06-29-2013, 11:00 PM   #54
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necro post!!

i want to make this happen on my e46 as well. has anyone made it work yet?

edit.. to answer the original question.. the control module (a214) attaches to connector X10513...this connector is located in storage location C110 (left hand side of luggage compartment)

.. according to the rest of the information i can find, storage location c110 is the same location as the navigation module.. see the picture below.. this is a different module but same storage location is listed.

http://www.bmw-planet.com/diagrams/r...s/G_062165.png

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Old 06-29-2013, 11:47 PM   #55
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digging through all the info i can find to build the complete system.. i will post the steps as i get more and more info.. so far.. this..


Note: AHL components on E46, E53 and E83

There is a separate system description for the adaptive headlights on the E46, E53, E83. [more in SI
Technical (SBT) 63 03 03 047]


A214 Control unit for adaptive headlight
Connector location views
Number X-pin, colour Description
X10513 18-pin, blue Plug connector Control unit for adaptive headlight
Pin assignments at plug connector X10513
Pin Type Description / Signal type Connection /
Measuring notes
1 E Terminal 30 Fuse F58

2 A Voltage supply, adaptive headlight adjustment Xenon headlight, left

3 A Voltage supply, adaptive headlight adjustment Xenon headlight, right

4 M Ground Ground connector

5 E Signal ground, front load sensor Load sensor, headlight vertical aim control

6 E Signal ground, rear load sensor Load sensor, headlight vertical aim control

7 E Terminal 15 Fuse F32

8 E Signal, rear load sensor Load sensor, headlight vertical aim control

9 E Signal, front load sensor Load sensor, headlight vertical aim control

10 E Signal Brake light Connector Brake light switch

11 E from 2004_03 Signal, reversing light Connector, reverse switch

12 E/A K-bus signal K-bus connector

13 E/A Signal CAN bus high Connector, CAN bus

14 E/A Signal CAN bus low Connector, CAN bus

15 A Signal, +5 V front load sensor Load sensor, headlight vertical aim control

16 A Signal, +5 V rear load sensor Load sensor, headlight vertical aim control

17 A LIN signal, adaptive headlight adjustment Xenon headlight, left

18 A LIN signal, adaptive headlight adjustment Xenon headlight, right

Last edited by Mad_Scientist; 06-30-2013 at 12:20 AM.
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Old 06-29-2013, 11:57 PM   #56
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http://bmw.workshop-manuals.com/3_Se...ex.php?id=4518

VS-42 je

Baugruppe/Group: 63

63 03 03 (047)

weltweit

Datum/Date:
02/2003
Update: 08/2006

Adaptive headlights


E46/2, E46/C, E53, E83

Launch dates for option 524 "Adaptive headlights":

-

E46 Coupé (E46/2) and E46 Convertible (E46/C) model revision: 03/2003

-

E53: 04/2004 onwards

-

E83: From 10/2003

Note: Option 524 is only available in conjunction with option 522.

Option 524 "Adaptive headlights" is only available in conjunction with option 522 "Xenon dipped and
main-beam headlights".

Note: ALC = AHL

The development code for the adaptive headlights was "ALC".
ALC stood for "Adaptive Light Control".
The marketing and sales designation for option 524 in English-language markets is "adaptive headlights",
abbreviated to "AHL".
This is why the abbreviation "AHL" is used even in diagnosis and technical vehicle documentation.

However, some control units may still bear the abbreviation "ALC", which may also be the abbreviation used
in the EPC (Electronic Parts Catalogue).

The adaptive headlights turn the bi-xenon headlights towards the inside of a bend when cornering. This improves
illumination of the curve of the road.
Visibility is therefore improved.
When cornering, the driver is not looking into a "black hole" - instead, the adaptive headlights allow the driver to see
the curve of the road.

>

E46/2, E46/C, E53 and
E83 until 09/2006
[system overview ...]

>

E83 from 09/2006
[system overview]

Note: AHL control unit discontinued from 09/2006.

On the E83 from 09/2006, the software for the AHL control unit is integrated into the light module (LM). The
AHL control unit is no longer fitted.

The turning lights function is new on the E83 from 09/2006.
The turning lights give the area next to the carriageway additional illumination when you are turning or cornering
(driving in tight bends). The function is also active when you are parking.

The turning lights are realised using the front foglights. The front foglights have a specially shaped reflector to
illuminate the areas to the sides better.

Note: Turning lights only in conjunction with option 524.

Turning lights are a subfunction of option 524 "Adaptive headlights".

Brief description of components

The following components and control units provide input signals for the adaptive headlights system:

-

Light switch

The rotary switch for the side lights and dipped headlights differs depending on the vehicle equipment level
(adaptive headlights, automatic driving lights control, automatic or manual headlight-range adjustment). For
the adaptive headlights function to operate, the light switch must be set to position "A" ("A" =
"automatic driving lights control" or "adaptive headlights").

[more ...]

-

Turn-signal/main-beam switch

The main-beam headlights are switched on and off with the direction indicator / main-beam switch (by pressing
or pulling the switch). The adaptive headlights function operates with both dipped and main-beam headlights.

-

Ride-height sensors

If the special equipment "Adaptive headlights" is fitted, the adaptive headlights control unit evaluates the signals
from the ride-height sensors.
This is because: the adaptive headlights control unit also controls the automatic headlight-range adjustment.

The automatic headlight-range adjustment feature adjusts the vertical aim of the headlights to compensate for
variations in the vehicle tilt angle (e.g. when the vehicle is laden, and under braking and acceleration in dynamic
driving situations).

[more ...]

-

Brake light switch

If the vehicle is equipped with the "adaptive headlights" option, the signals from the brake light switch are read
by the control unit for the adaptive headlights.
The signal sent by the brake light switch is an input signal for the automatic headlight-range adjustment; see
above: Ride-height sensors.



Zero-position sensor

> E46/2, E46/C

> E83

The zero-position sensor in the AHL headlight sends a signal for calculating the zero position of the AHL
headlight. This regulates the horizontal movement of the AHL headlight.

[more ...]

-

Position sensor

> E53

The position sensor in the positioner module for the bi-xenon headlights supplies a signal for the horizontal
movement of the headlights.

[more ...]

-

General module

The basic module supplies input signals with regard to the terminal management (terminal 15 ON).
The adaptive headlights control unit is activated when terminal 15 is switched ON.

-

EGS control unit or reversing light switch

When reverse gear is engaged, the headlights are moved to the straight-ahead position.
On vehicles with automatic transmission, the EGS control unit (electronic transmission control) provides the
"Reverse gear engaged" signal.

On vehicles with manual transmission, the signal is supplied by the reversing light switch.

-

KOMBI: Instrument cluster

The instrument cluster is the gateway, i.e. the data interface) between the PT-CAN data bus and the K-bus.

-

RLS: Rain-light sensor for automatic driving lights control

The rain-light sensor measures the ambient brightness outside the vehicle.



In twilight conditions, the rain-light sensor transmits the message "Twilight" so that the
automatic headlight-range adjustment can activate dipped headlights. The headlights are tilted up and
down as required, but they are not swivelled towards the bend in the road.



In darkness, the rain-light sensor sends the message "Darkness". The adaptive headlights are then
activated when the vehicle is cornering. The headlights are moved to the left or the right:

[more ...]

-

Steering-angle sensor and DSC sensor

The steering angle sensor and DSC sensor (DSC = Dynamic Stability Control) supply signals for the
adaptive headlights to the adaptive headlights control unit. These signals are evaluated as follows, depending
on the vehicle's speed:



Vehicle speeds up to 30 km/h:
The adaptive headlights function is controlled using the information from the steering angle sensor (in the
steering column switch cluster).



Vehicle speeds between 30 km/h and 50 km/h

:

In the 30 to 50 km/h speed range, there is a

continuous transition in signal evaluation: from the

evaluation of signals sent by the steering angle sensor to evaluation of the signals sent by the yaw-rate
sensor (in the DSC sensor).



In extreme dynamic driving situations, e.g. if the vehicle starts to skid or fishtail, even at speeds less
than 50 km/h , the signals from the yaw-rate-sensor are considered.
If the vehicle starts to skid or fishtail, the headlights will move to the straight-ahead position. The headlights
are not moved until the vehicle has stabilised.



Vehicle speeds over 50 km/h:

At speeds upwards of 50 km/h, the signals from the yaw-rate sensor (in the DSC sensor) form the primary
basis for control of the adaptive headlights function.

Reason: For a constant cornering radius, the steering angle required increases disproportionately with
speed. In addition, the steering angle required also depends on the coefficient of friction of the road
surface.

The yaw rate is directly proportional to speed. For this reason, the yaw rate is always the most suitable
measure for controlling the adaptive headlights at high speeds.

Even at high speeds, however, the steering angle sensor signal is used to detect (predict) the driver's
commands in advance. This prediction is important: The yaw rate signal is not supplied until the vehicle
has responded to the steering wheel movement.

The steering-angle sensor signal is disabled so that rapid, momentary steering adjustments do not affect
the adaptive headlights function.

A number of control units are involved in the adaptive headlights system (see above: GM, EGS, KOMBI).
Depending on the series and model concerned, the adaptive headlights are actuated by the following control units:

-

AHL control unit

> E46/2, E46/C, E53 and E83 until 09/2006

The AHL control unit controls the adaptive headlights.
For safety reasons, the AHL control unit is also responsible for the automatic headlight-range adjustment. This is
because: Oncoming traffic must not be dazzled by the adaptive headlights. If a headlight sticks in an
unfavourable position, the AHL control unit will attempt to move this headlight down (using the stepper motors in
the automatic headlight-range adjustment).
The AHL control unit is connected to the K-bus and the PT-CAN.

[more ...]

-

LM: Light module

> E83 from 09/2006

The AHL control unit is integrated in the light module.
The light module controls and monitors all vehicle lights. Information is received and transmitted over the data
buses PT-CAN, LIN bus and K-bus.

[more ...]

-

Stepper motor controllers

The stepper motor controllers (SMC) control the stepper motors in the headlights (for the automatic headlight-
range adjustment and for the adaptive headlights).

[more ...]

-

LSZ: Light switch cluster

> E46/2, E46/C, E53 and E83 until 09/2006 (E53: light module)

The light switch cluster forwards the prompts from the light switch and from the turn-signal/main-beam switch to
the AHL control unit (via the K-bus).

[more ...]

-

Xenon-headlight control unit

The xenon-headlight control unit actuates the bulb in the bi-xenon headlights.

[more ...]

The following components are controlled:

-

Stepper motors for the adaptive headlights

The stepper motors turn the positioner modules in the bi-xenon headlights.

The stepper motors swivel the headlights along the vertical and horizontal axes. (vertical = up and down for the

utomatic headlight-range adjustment;
horizontal = to the left and right for the adaptive headlights).

The positioner modules execute the movement.

[more ...]

-

Indicator light on the light switch

The indicator light (green LED) next to the "A" (= "automatic driving lights control") is actuated by the adaptive
headlights and has 2 display functions:·



The indicator light lights up permanently when the automatic driving lights control or adaptive headlights
function is switched on (= light switch in position "A").



The indicator light flashes if a fault develops in the adaptive headlight system.

The indicator light thus supports diagnosis of the adaptive headlights.

The indicator light is actuated by the light switch cluster or by the light module.

System functions

The adaptive headlights system moves headlights horizontal (i.e. from left to right) in order to illuminate the inside of
a bend when cornering.

The following functions of the adaptive headlights system are described below:

-

System activation and automatic calibration

-

Activation of stepper motor controllers

-

Speed-dependent analysis of signals

-

Adjustment of headlight horizontal aim

-

Deactivation of adaptive headlights function under extreme handling conditions

-

Deactivation of adaptive headlights function in response to system faults

-

Setting headlights to parked position

-

Automatic headlight-range adjustment

-

Adaptive headlights for automatic driving lights control

-

Turning light

Note: Different control units for adaptive headlights.

>

E46/2, E46/C, E53 and E83 until 09/2006: AHL control unit

>

E83 from 09/2006: The adaptive headlights are actuated by the light module.

For this reason, the following text refers to the general "control unit for adaptive headlights".

System activation and automatic calibration

When terminal 15 is switched ON, the headlights always perform a calibration sequence, even if the dipped
headlights are not switched on. The control unit for adaptive headlights (AHL control unit or light module) sends
the "perform calibration sequence" prompt to the stepper motor controllers (SMCs, control unit for the headlight
stepper motors). The stepper motor controllers actuate the stepper motors in the headlights. The calibration
sequence is performed.

In the calibration sequence, the headlights move as follows:



The headlights move to the right and the left (= calibration sequence for adaptive headlights).



The headlights move up and down (= calibration sequence for automatic headlight-range adjustment).



At the end of the calibration sequence, the headlights are in the straight-ahead position.

Following the calibration sequence, the system is ready for operation.

When reverse gear is engaged, the headlights are moved to the straight-ahead position.

Note: The calibration sequence is performed only after terminal 15 has been switched OFF for at least
15 seconds.

If terminal 15 is repeatedly switched on and off (e.g.for demonstration purposes), the calibration sequence
will not be executed every time terminal 15 is switched on. Terminal 15 must have been switched off for at
least 15 seconds before it is switched on again. Only then is a calibration sequence performed when
terminal 15 is switched on.

Activation of stepper motor controllers

The control unit·for·adaptive·headlights (AHL control unit or light module) sends the stepper motor controllers
(SMC) the nominal values for the positioner modules (position of positioner modules and speed of movement).

The control unit for adaptive headlights calculates the nominal values using the following signals:



Vehicle road speed



Steering angle (at speeds up to 50 km/h, dependent on encoding)



Yaw rate (50 km/h upwards, see "Steering-angle sensor and DSC sensor" above)

Speed-dependent analysis of signals

The adaptive headlights are controlled by the following signals depending on the road speed: signals from the
steering angle sensor or signals from yaw-rate sensor (in the DSC sensor). The encoding (at the end of the
production line) determines the priority assigned to sensor signals above which speed threshold (see above).

Adjustment of headlight horizontal aim

The stepper motor controllers move the headlights to the right or left when the vehicle corners.

Horizontal range of movement of headlights:



Inwards, i.e. towards centre of vehicle: up to max. 8

°

> E46/2, E46/C, E83: 7

°

> E53: 8

°



Outwards: up to max. 15

°

Example: Right-hand bend:
The right-hand headlight turns by up to 15

°

(the right-hand headlight is the "inside" headlight on a right-hand

bend).
It therefore swivels outwards away from the vehicle centre.
The left-hand headlight swivels through a maximum of 8

°

(the left-hand headlight swivels towards the vehicle

centre, i.e. inwards).
The headlight on the outside of the bend reaches its end position at the same time as the headlight on the inside
of the bend, ensuring that the road is evenly illuminated.

On a right-hand bend, the left-hand headlight is on the outside of the bend. The right-hand headlight is on the
inside of the bend.

Deactivation of adaptive headlights function under extreme handling conditions

If the vehicle drifts, skids and loses sideways grip, the adaptive headlights function is deactivated as follows:



The headlights are returned to the straight-ahead position. The headlights are no longer turned.



The dipped headlights remain on.

Deactivation of adaptive headlights function in response to system faults

In the event of a system error, the indicator light on the light switch will flash.

Dazzling of oncoming traffic must be prevented in the event of a system fault.
For this reason, the adaptive headlights function is deactivated as follows:



If the stepper motors are still functional, the headlights are returned to the straight-ahead position. The
headlights are no longer moved towards bends in the road.



If it is no longer possible for a headlight to be moved back to the straight-ahead position, the headlight is
tilted downwards (by the stepped motors for automatic headlight-range adjustment). This prevents dazzling
of oncoming traffic.



If the headlight cannot be tilted downwards, the bi-xenon bulb in this headlight is disabled as follows:
When the vehicle is parked up, the control unit registers sleep mode for the adaptive headlights, as
follows: Standstill and terminal R OFF for several minutes.

The next time the vehicle is restarted, the bi-xenon light of the defective headlight is not switched on.
The front foglights are switched on in order to ensure a minimum level of illumination.

The dipped headlight is not switched off while the vehicle is in motion.

Setting headlights to parked position

When terminal R is switched off, the headlights move to the parked position. The parked position is important
for the headlights' next calibration sequence. From the parked position, the headlights are run through a
calibration sequence in the pre-drive-check. During the calibration sequence, the control unit for adaptive
headlights relearns the straight-ahead position for the headlights.

When the headlights have reached the parked position, the stepper motor controllers SMCs inform the control
unit for adaptive headlights ("verification").
The control unit for adaptive headlights deactivates the stepper motor controllers. The run-down period lasts
approx. 10 seconds.

Automatic headlight-range adjustment

If the special equipment "Adaptive headlights" is fitted, the control unit for adaptive headlights also controls the
automatic headlight-range adjustment.

The automatic headlight-range adjustment adapts the headlight range for different operating conditions.

Variations in the vehicle tilt angle are produced by vehicle loads and braking or acceleration in extreme driving
situations. The automatic headlight-range adjustment moves the headlights up and down as required.

The control unit for adaptive headlights also controls the automatic headlight-range adjustment as follows.

1.

The ride-height sensors and the brake light switch supply the signals for the automatic headlight-range
adjustment.

2.

The control unit for adaptive headlights computes the vehicle inclination (longitudinally to the roadway)
from the signals.

3.

The stepper motors for the automatic headlight-range adjustment automatically and dynamically control the
headlight range.

The headlight range is adjusted so that the actual headlight range conforms to the legally required headlight
range as follows:



If vehicle rear is lower than front:
The actual headlight range will be longer than the legally stipulated range. The headlight beam height
is lowered to reduce the headlight range to match the legal requirement.



If the vehicle is horizontal:
The actual headlight range will be the same as the legally stipulated range.



If vehicle front is lower than rear:
The actual headlight range will be shorter than the legally stipulated range. The headlight beam height
is raised to increase the headlight range to match the legal requirement.

Adaptive headlights for automatic driving lights control

The automatic driving lights control feature (option in conjunction with the rain-light sensor) switches the side
lights and dipped headlights on and off automatically.
Switch-on conditions:



The automatic driving lights control must be encoded in the light switch cluster or light module.



The light switch must be in position A" ("A" stands for automatic driving lights control and for
adaptive headlights).



The rain-light sensor must be installed and operational.

The rain-light sensor detects the brightness of the ambient light.

The rain-light sensor sends the following prompts to the light switch cluster or the light module:

-

Ambient brightness low: In twilight, darkness, in an underground garage or tunnel.

"Switch on dipped headlights" request

-

Ambient brightness sufficient.

"Switch off dipped headlights" request

If only the side lights are to be switched on, the light switch must be set to side lights (switch position 1).

When the light switch is set to position "A", the control unit for adaptive headlights is also activated:



When the automatic driving lights control function switches on the dipped headlights (e.g. at twilight), the
adaptive headlights function is notified at the same time.
The control unit for adaptive headlights then assumes control of the automatic headlight-range adjustment.



In addition, the signals from the rain-light sensor are also evaluated. The headlights are not turned when
the vehicle is cornering until total darkness sets in.

The message "dipped headlights on" is given individually for each headlight.

If a headlight fails, the adaptive headlights are switched off.
The front foglights are switched on in order to ensure a minimum level of illumination.

Turning lights

> E83 from 09/2006

The turning lights are coupled to the adaptive headlights (option 524).
Depending on actuation, the right-hand and/or left-hand front foglight is switched on. The turning lights are
actuated by the light module (LM). The turning light are not switched on suddenly but rather faded according to
special time parameters.

Depending on the country concerned, the turning lights are switched on when cornering.

The following conditions must be satisfied for the turning lights to be switched on:

-

Terminal 15 ON

-

Light switch in position "A" ("A" stands for automatic driving lights control)

-

Rain-light sensor detects twilight or darkness (threshold exceeded)

and

-

Turn signal indicator ON (not one-touch turn signal)

-

Speed range (forwards):



Europe and Japan version from 0 km/h to 35 km/h



US version from 0 km/h to 65 km/h

-

Swivel angle (theoretical):



when stationary

***8805;

77

°



when driving

***8805;

10

°



Alternatively

-

Speed range (reverse):



0 km/h to 35 km/h

-

Swivel angle (theoretical):



when stationary or driving

***8805;

70

°

If the vehicle is stationary, the turning lights will automatically be deactivated after a certain time, e.g. when
waiting at traffic lights. However, the turning lights can be activated again with the turn-signal/main-beam switch.

The light module (LM) uses the following signals to actuate the turning lights:

-

Steering angle

-

Yaw rate

-

Status of reverse gear

The following conditions must be satisfied for the turning lights to be switched off:

-

Light switch not in position "A" ("A" stands for automatic driving lights control)

-

Rain-light sensor does not detect twilight or darkness (lower threshold exceeded)

Alternatively

-

Turn signal indicator OFF

-

Speed range (forwards):



Europe and Japan versions

***8805;

40 km/h



US version

***8805;

70 km/h

-

Swivel angle (theoretical):

•when stationary 77

°

•when driving 10

°



Alternatively

-

Speed range (reverse):

***8805;

40 km/h

-

Swivel angle (theoretical): when stationary and when driving below a certain value

Alternatively

-

Vehicle skids and swings out.

Alternatively

-

Front foglights are switched on with the front foglights switch.

Preconditions for activation

The control unit for adaptive headlights is "awake" from terminal 15 ON.
The movement of the lights is subject to the following conditions:

-

Reverse gear must not be engaged.

-

No system faults must be present. The indicator light must not be flashing.

-

The bulbs for the bi-xenon lights are OK in both headlights.

-

The vehicle must not be skidding or fishtailing.

-

The rain-light sensor must detect darkness.

-

Additional precondition for activation: automatic driving lights control is active (light switch in position "A", see
above).

Notes for service staff

Caution: Exercise caution when working on bi-xenon headlights

Whenever inspecting or working on the headlights, always observe the safety precautions and accident
prevention rules. The headlight system has dangerously high voltage.

-

General note: [more ...]

-

Diagnosis: [more ...]

-

Encoding/programming: [more ...]

-

Car and Key Memory:

The sensitivity of the driving light sensor can be set with the Car and Key Memory.

National versions

The options "Daytime driving lights" and "Manual headlight-range adjustment" are available in certain countries.
Vehicles with manual headlight-range adjustment do not have adaptive headlights.
This is because vehicles with manual headlight-range adjustment have halogen dipped headlights;
adaptive headlights are only available in conjunction with option 522 "Xenon dipped and main-beam headlights".

Switching on adaptive headlights in conjunction with daytime driving lights function

The "Daytime lights" option (Northern Europe and Canada) means that

The dipped headlights and the side lights are always switched on under the following conditions:

•Light switch in position "2"

•Terminal 15 ON

The automatic headlight-range adjustment is active (actuated by the control unit for adaptive headlights).
If terminal 15 is switched off, the dipped headlights and the side lights are automatically switched off as well.

The light switch must also be set to position "A" with the "Daytime driving lights" option. The control unit for
adaptive headlights is then in standby.

System functions for "Daytime lights" option when the light switch is set to position "A":

•If the vehicle is encoded with the "Daytime driving lights" option (end of production line), the light switch can
remain in position "A" at all times.

When terminal R is switched on, side lights, parking lights and licence plate lights are switched on.
As soon as terminal 15 is switched on, the dipped headlights are also switched on.

•When the dipped headlights are switched on, the adaptive headlights control unit is activated (for automatic
headlight-range adjustment).

•The indicator lamp on the light switch lights up and indicates that the system is functional.

•The adaptive headlights turn when the vehicle is stationary if the steering wheel is turned (to the right only).

•The headlights are moved when the vehicle corners if the rain-light sensor registers darkness.

The switch-on conditions for the adaptive headlights in conjunction with special equipment "Daytime driving
lights" are as follows:

•The vehicle must be encoded with the "Daytime driving lights" option (end of production line)

•The light switch must be in position "A"

•Terminal 15 must be switched on and reverse gear must not be engaged

•Rain-light sensor must detect darkness

Subject to change.

Last edited by Mad_Scientist; 06-30-2013 at 12:08 AM.
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