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BMW 1 Series Lock Issue

3K views 4 replies 4 participants last post by  Octavius 
#1 ·
Hello,

I have a BMW 1 series M sport 2008 2.0 - i have come to my car to unlock and when i press the open button on the fob it makes a buzz noise and doesnt open the drivers door, but opens the passengers door. When i use my key, this also doesnt work either now. I am unsure of the diagnostic for this or how this is fixed...

Is it the battery on the key fob?
is it the central locking system?

This buzz noise is something ive never heard, but i do get a battery sign when the car is in idol, but ive checked the battery and this is fine?

Please can someone help?
 
#2 ·
It sounds like the battery to me (car, NOT fob).

Could be the FRM module knackered due to low battery voltage - there have been some problems reported.

Could just be the drivers side lock itself.

When you checked the battery, what did you do, and what results did you get? What age is the car, and has the battery ever been changed? Getting the battery light at ldle suggests theres a problem with charging, which could have weakened the battery, which could be causing your symptoms with the lock.
 
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