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Old 11-24-2014, 07:58 AM   #1
StarBwoy
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Join Date: Mar 2006
Location: Toronto
Posts: 4
My Ride: BMW 325i
E4 Actuator Problem

Hey Guys, (Title should read E46)

I know a few people had this problem with their driver door not unlocking. All of my other doors were unlocking properly except for the driver door. My mechanic replaced the actuator and it still didn't work, so I was using the key to unlock manually. Now the tumbler broke. Any idea why the actuator isn't working? The guy that changed it has no clue. He also said that it is not the GM5 cause the other doors are opening.

Do I need to reprogram something? I have to enter through the passenger side and pull the driver door handle to get in. This may break the actuator again.

No clue what to do, any ideas would be appreciated.

2002, 325i, 4 door.

Thanks.

Last edited by StarBwoy; 11-24-2014 at 08:18 AM.
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Old 11-24-2014, 08:26 AM   #2
jfoj
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Location: Fairfax, VA USA
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www.bmwgm5.com

It may be the GM5 module/relays.

There are 2 sets of relays, one for the drivers door and one for the other door(s) as I recall.

Might email Scott with the symptoms.

Since the actuator has been replaced, then this leads me to the conclusion the GM5 relays are acting up but see what Scott has to say.
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Old 11-24-2014, 10:15 AM   #3
StarBwoy
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Join Date: Mar 2006
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Quote:
Originally Posted by jfoj View Post
www.bmwgm5.com

It may be the GM5 module/relays.

There are 2 sets of relays, one for the drivers door and one for the other door(s) as I recall.

Might email Scott with the symptoms.

Since the actuator has been replaced, then this leads me to the conclusion the GM5 relays are acting up but see what Scott has to say.
Thanks....I sent Scott an email for his thoughts but I dont think it's the GM5:

4-door - all 4 doors fail to unlock -> GM5
4-door - all 3 passenger doors fail to unlock -> GM5
4-door - only 1 of the passenger doors fails -> Actuator

From the above it should be the actuator.

Think I need to reprogram something or a fuse?

Last edited by StarBwoy; 11-24-2014 at 10:22 AM.
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Old 11-24-2014, 12:58 PM   #4
jfoj
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Quote:
Originally Posted by StarBwoy View Post
Thanks....I sent Scott an email for his thoughts but I dont think it's the GM5:

4-door - all 4 doors fail to unlock -> GM5
4-door - all 3 passenger doors fail to unlock -> GM5
4-door - only 1 of the passenger doors fails -> Actuator

From the above it should be the actuator.

Think I need to reprogram something or a fuse?
On the 4 door cars, and maybe all version there are 2 GM5 door lock relays.

One relay should only be for the drivers door, the other relay should be for the remaining door(s). This is so you can have the single, vs double unlock situation.

Again, I do not profess to be an expert, Scott has a much better handle to the GM5 relays/modules/behavior, but I also think Scott can be a bit to honest or does not want to replace the relays unless they are "clearly" bad.

The problem is these relays pit over times and degrade. Then things degrade, often times they do unexpected things. I generally am seeing that these relays last about 10 years, if that, and it is not a bad idea to have them replaced as a PM item, even if they are not causing problems.

This way you can have the relays replaced on your schedule, not the cars schedule and not run into the problem of being locked in or out of the car.

If the drivers door lock actuator was replaced with a new unit and you are still having problems, common sense would suggest GM5 relays would be a wise idea due to the vehicle age.
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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, Temps, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

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

Lower hose fan switch O-ring - BMW #13621743299
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Old 11-30-2014, 09:39 PM   #5
DOB2009
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Join Date: Oct 2005
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Quote:
Originally Posted by StarBwoy View Post
Hey Guys, (Title should read E46)

I know a few people had this problem with their driver door not unlocking. All of my other doors were unlocking properly except for the driver door. My mechanic replaced the actuator and it still didn't work, so I was using the key to unlock manually. Now the tumbler broke. Any idea why the actuator isn't working? The guy that changed it has no clue. He also said that it is not the GM5 cause the other doors are opening.

Do I need to reprogram something? I have to enter through the passenger side and pull the driver door handle to get in. This may break the actuator again.

No clue what to do, any ideas would be appreciated.

2002, 325i, 4 door.

Thanks.
If he replaced the actuator is has to be gm5. Both mine are broken but gm5 has been for several years, actuator only recently. I just need to make the time to go get it repaired locally here.
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