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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 01-25-2008, 07:59 PM   #1
BAUTO
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outside air temp sensor location

Hi can anyone tell me where the outside air temp sensor is, there are 2 wires cut behind the drivers side bumper and the wires run with the left horn wires ,and do all 323i have one .The car is a 2000 323i thanks inadvance Bob
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Old 01-25-2008, 08:06 PM   #2
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The sensor should mount under the driver side bumper in front of the tire. They commonly get ripped out on parking curbs, so yours may be missing. $75 at the dealer to replace it. Hope this helps!
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Old 01-25-2008, 08:25 PM   #3
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Mine kept flashing today.
It was at 37 degrees and all but it was flashing forever it seemed, then it stopped.
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Old 01-25-2008, 09:14 PM   #4
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Yup driver's side in front of the wheel. Its gets damaged easily, and all cars do have it. If it breaks then the car assumes it is really cold. The A/C will not come on. Or so I have been told...
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Old 01-25-2008, 10:12 PM   #5
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http://www.realoem.com/bmw/showparts...98&hg=41&fg=10

Right above #7 at the angled hole...that's where it goes...just snaps in there.

I've destroyed that piece (#8) twice on two E46's....
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Old 01-26-2008, 08:53 AM   #6
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i bought my temp sensor for around $35 at the local dealership...here's my thread for more info on how to install it...

http://forum.e46fanatics.com/showthread.php?t=358114
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Old 01-26-2008, 10:13 AM   #7
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http://cgi.ebay.com/ebaymotors/BMW-O...2em118Q2el1247

here is one on ebay for about $42
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Old 01-26-2008, 03:51 PM   #8
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i destroyed both sides in the snow, what sensor is on the other side-i had a round 2? wire sensor just hanging there and it got ripped off too
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Old 01-27-2008, 08:13 AM   #9
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Originally Posted by bigdog2003_99 View Post
i destroyed both sides in the snow, what sensor is on the other side-i had a round 2? wire sensor just hanging there and it got ripped off too
The "hockey puck" on the right side is the sensor (really just a thermal switch) for the heated windsheidl washer. Fairly cheap at the dealer and they sell a repair kit that includes a new connector.
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Old 01-27-2008, 10:21 AM   #10
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wow, i didnt know that i had heated washers... i would have never guessed that, thanks
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Old 01-11-2010, 07:19 PM   #11
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Quote:
Originally Posted by Philbert View Post
http://www.realoem.com/bmw/showparts...98&hg=41&fg=10

Right above #7 at the angled hole...that's where it goes...just snaps in there.

I've destroyed that piece (#8) twice on two E46's....
Hey philbert thanks for the diagram it was really helpful. I was wondering if piece #8 is even needed in order to install the temp sensor. I checked my car after reading this post and the lower fender liners (piece #8 in diagram) on both sides of my car are missing. If it doesn't have anything to do with the temp sensor, is it needed for something else? If you or anybody out there have any idea please post. many thanks!

diagram:
http://www.realoem.com/bmw/showparts...98&hg=41&fg=10
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Old 06-14-2010, 09:51 PM   #12
miniestate
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Outside Air Temp Sensor and AC

Hello

Yeah it was like mounted on the air dam or something driverside. I had it mounted higher in a different place. Read my AC Not Cold Post.

I am going to try and post on a few of the forums as I did not read about it on any when I was looking for answers. I changed the heater valve like I read about, I recharged the system and none of this helped me although it all made sense. So I just got back from a garage I took a VW Jetta to and got a honest answer on it's AC. So I sold it and bought this 2000 323i Sport Wagon. The AC was not strong but it worked for awhile. I don't remember it just stopping but it was not hot yet so I did not use it. Well after Bob at Bobs Auto Garage in Fort Lauderdale checked the system it was very low on refrigiant, he did an evac and recharge he said the compressor was not turning on. He did some trouble shooting as to why and found out the outside air temp sensor that is mounted to the air dam up front was ripped off. Without it the system will not turn the compressor on. He replaced it and with the recharge it is cold as a well diggers, well you know it works great. The blower fan runs irregular, goes real fast then normal and he said it is a resistor. I remember reading about that so I am going back to fix it also. Two hours labor, he spent more, the sensor ($50, I see it for $43 if I search and recharge for a total of $300.

Last edited by miniestate; 06-14-2010 at 09:54 PM.
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Old 06-15-2010, 09:00 PM   #13
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Sorry to get OT, but look at the options for part #8 in the realoem diagram in Philbert's post (#5).

What the heck is a "patrol vehicle, camouflaged" ???!!

Visions of a camo E46 offroad & jumping ditches...

50 caliber on the roof....
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ZOMG HALP! *click*

oh hai, i can haz part numbro for florr matz? k thanxz.
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Old 12-29-2012, 10:20 PM   #14
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i know the thread is a little old, but i just wanted to update it with a kit that i found on ebay (sensor, connector, and wire)

http://www.ebay.com/itm/65816905133-...-/110693380295_nr_
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Old 01-15-2013, 01:52 AM   #15
lornes2002
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check Rockauto.com. it's 23.79 for oem part
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