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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 02-11-2017, 09:05 PM   #1
zackmillerlite
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Join Date: Feb 2017
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My Ride: 2004 BMW E46 325i Wa
Need Key/Fob Help!

Hey everybody, I've been reading on here for a long time but posting for the first time.
For a long time I wanted an E46, and just purchased one today.

I got A 2004 325I wagon in alpine white with 130xxx miles. I was able to check the car out and it is really clean and running great. Originally purchased at Spreen BMW Newport California dealership.
I got it at auction for a very good price.

The only things that are wrong with the car,
Is that they took the driver door key cylinder out, and the fob battery is Dead. So I cannot lock the car, as I won't be able to get back in.

I'm trying to figure out what my options are, without paying an arm and a leg at the dealership. Does anybody have any ideas or experience with something like this? I'd appreciate any help that I could get.



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Old 02-11-2017, 09:25 PM   #2
jfoj
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You should be able to purchase a replacement drivers door lock cylinder than will work with the original key for around $70 from the dealer or an online dealer as I recall.

For a new keyfob, you can check locally, but they are probably too expensive.

For around $156 you can have a new keyfob on your doorstep in about 3 days from thebmwpartstore.com. I think you can email Sean and provide proof of ownership.

You should also read up on the GM5 relay problems, you really should get the GM5 relays replaced in the module, this may be a good part of what the problem is/was with your car.

www.bmwgm5.com

I would also spend the $30-$35 now and replace the center console door lock switch NOW.

I would probably also buy 1 or 2 of these and just use the keyfob portion to remotely lock/unlock the door.

http://www.ebay.com/itm/315MHz-Keyle...9U3yVV&vxp=mtr

I would not try to get this key working with the car, it is not cost or time effective. You could cheat and even just cut the keyblade off and use the fob, just as a fob from the old days before there were integrated keyfobs. This is how my 2005 GMC truck is, I have a separate fob and key.
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Hidden OBC Menu - Check Voltage, Temp, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose temp switch O-ring - BMW #13621743299

Last edited by jfoj; 02-11-2017 at 09:31 PM.
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Old 02-11-2017, 09:27 PM   #3
Overboost
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Quote:
Originally Posted by zackmillerlite View Post
Hey everybody, I've been reading on here for a long time but posting for the first time.
For a long time I wanted an E46, and just purchased one today.

I got A 2004 325I wagon in alpine white with 130xxx miles. I was able to check the car out and it is really clean and running great. Originally purchased at Spreen BMW Newport California dealership.
I got it at auction for a very good price.

The only things that are wrong with the car,
Is that they took the driver door key cylinder out, and the fob battery is Dead. So I cannot lock the car, as I won't be able to get back in.

I'm trying to figure out what my options are, without paying an arm and a leg at the dealership. Does anybody have any ideas or experience with something like this? I'd appreciate any help that I could get.



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One of our members (Scottjoh) is a genius on the GM5 electronics. He should see your post and give you the correct procedure moving forward. Here is a link to his door lock cylinder replacement. The guy knows his ****, listen to him and follow his directions. Welcome to the family and let us know how it goes.

https://www.bmwgm5.com/bmwgm5/lock_cylinder.htm
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Old 02-11-2017, 09:27 PM   #4
jmo69
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Proof of ownership emailed here with the VIN https://thebmwminipartstore.com/part...&siteid=218365= new key, can't speak for the missing lock cylinder. Scot can replace your key battery for you too.
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Old 02-12-2017, 10:59 AM   #5
zackmillerlite
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Thanks guys. I feel better having an idea where to start.

So, what I don't understand,
I see some new fobs that are almost 200 dollars and some that are 15 dollars. What is the huge gap in expense?

Could I have a blank $15 fob cut to my ignition and program it to my car?

I see videos on YouTube of people who put the key in the ignition turned to the on position and then hold the lock and BMW button on the fob and it seems to immediately work for locking and unlocking the car?





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Old 02-12-2017, 11:03 AM   #6
zackmillerlite
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And as far as the door cylinder goes, they're only $30 to get a replacement with two keys online. And super easy to replace. I am absolutely a DIYer.

You're not really supposed to use the doorlock much anyway, so after I get A couple new fobs with keys for the ignition I won't have to use the door.

So I'll just throw the new key that comes with the door cylinder on the key ring in case of an emergency.




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Old 02-12-2017, 11:11 AM   #7
zackmillerlite
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Quote:
Originally Posted by jfoj View Post
You should be able to purchase a replacement drivers door lock cylinder than will work with the original key for around $70 from the dealer or an online dealer as I recall.

For a new keyfob, you can check locally, but they are probably too expensive.

For around $156 you can have a new keyfob on your doorstep in about 3 days from thebmwpartstore.com. I think you can email Sean and provide proof of ownership.

You should also read up on the GM5 relay problems, you really should get the GM5 relays replaced in the module, this may be a good part of what the problem is/was with your car.

www.bmwgm5.com

I would also spend the $30-$35 now and replace the center console door lock switch NOW.

I would probably also buy 1 or 2 of these and just use the keyfob portion to remotely lock/unlock the door.

http://www.ebay.com/itm/315MHz-Keyle...9U3yVV&vxp=mtr

I would not try to get this key working with the car, it is not cost or time effective. You could cheat and even just cut the keyblade off and use the fob, just as a fob from the old days before there were integrated keyfobs. This is how my 2005 GMC truck is, I have a separate fob and key.


Awesome suggestions with the center console switch. I've had those go out on several of my cars in the past. I'll get one.

Do you know if A PA soft scanners check the GM5 modules relays?


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Old 02-12-2017, 11:28 AM   #8
jfoj
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Quote:
Originally Posted by zackmillerlite View Post
Do you know if A PA soft scanners check the GM5 modules relays?
No codes or warnings about GM5 relays going out, it is not IF but WHEN and I would just assume PM the GM5 relays buy year 10 if you do not have problems before then.

If the auto locking is enabled, the GM5 lifespan is shorter due to the added number of relay cycles.
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Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temp, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose temp switch O-ring - BMW #13621743299
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Old 02-12-2017, 11:41 AM   #9
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Quote:
Originally Posted by jfoj View Post
If the auto locking is enabled, the GM5 lifespan is shorter due to the added number of relay cycles.
Good point. I have never even thought about that. I have been hovering over the auto lock function for a while now and it just became less important.
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Old 02-12-2017, 12:07 PM   #10
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I have a friend that is the original owner of a 2001 325xi Touring and she had the auto locking enabled and I had to replace the GM5 relays in her car around year 9, which was back in 2010, might be time to replace the relays again in a few years!!

How time flies, in Sept it will be 7 years since I replaced the original relays at this point!!
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Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temp, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose temp switch O-ring - BMW #13621743299
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Old 02-12-2017, 12:50 PM   #11
scottjoh
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Need Key/Fob Help!

Quote:
Originally Posted by zackmillerlite View Post
Do you know if A PA soft scanners check the GM5 modules relays?
Yes. The general module has several codes for the relays. You can use INPA, PASoft or any other software that can read the general module to read them. These faults are not always caused by the relays even though it says relay in the fault description. It can be cause by failure of the relay driver transistor or a broken circuit board trace.

Auto locking isn't that bad. The two things that are hardest on the relays is double locking and double unlocking (using the remote or key in the door) on all door simultaneously. Both are worse on a 4-door. Certain contacts must handle the current from 9 motors (2 motors per door plus fuel flap). Auto locking and unlocking from an auto locking doesn't activate the double lock motors so the load is only 4 motors max for all doors on a 4-dr or only 1-2 motors on a 2-dr coupe/convertible. I wouldn't worry about Auto Locking.

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Old 02-12-2017, 12:57 PM   #12
jfoj
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Quote:
Originally Posted by scottjoh View Post
Yes. The general module has several codes for the relays. You can use INPA, PASoft or any other software that can read the general module to read them. These faults are not always caused by the relays even though it says relay in the fault description. It can be cause by failure of the relay driver transistor or a broken circuit board trace.
While there may be relay related codes, will they always indicate bad relay contacts?? I could see relay codes for an open relay coil, but question if there are really codes that would be accurate for the relay contacts having too much Voltage drop. If there are codes for relay driver transistors, then I doubt those codes can determine there is too much Voltage drop within the relay contact unless the system actually compares the command to Lock or Unlock the door latch and then the door latch has a feedback to indicate what state the locks are in. Giving the intermittent nature of the relay behavior there may or may not be codes as well. I have seen a low battery aggravate door unlocking when the relays are going bad.

I find that most monitoring is for the controller side, not the output side of devices.

In any event, I recommend PMing the GM5 relays at around year 10 based on what I have been seeing. Why wait until you have your back against the wall or cannot get into your car?? The relays never fail on your schedule!
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Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temp, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose temp switch O-ring - BMW #13621743299

Last edited by jfoj; 02-12-2017 at 01:01 PM.
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Old 04-21-2017, 12:30 AM   #13
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Canadian alternative online for a new key fob?
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