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E85 / E86 Z4 (2003-2008)
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  #1  
Old 06-05-2015, 08:42 PM
BMW Z4 BMW Z4 is offline
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Location: California
 
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Mein Auto: 2003 Z4
Door Locks Close But Won't Open

2003 BMW Z4 - Both locks will close using key fob or central lock button, but will not open with key or lock button. Checked fuses and replaced passenger door lock actuator. No improvement. Any ideas?
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  #2  
Old 06-05-2015, 09:33 PM
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Cvaria Cvaria is offline
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Location: Tallahassee, Florida
 
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Mein Auto: 2003 Z4 ; 2002 Wrangler;
have you scanned your car for faults?
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I like my 2003 Z4 2.5i... but love my smelly old 2002 Wrangler SE and evil 2007 HD Sportster 883/1200 conv!

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Old 06-05-2015, 10:15 PM
BMW Z4 BMW Z4 is offline
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Is scanning for faults something I can do? Or does it require a trip to the dealership?
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Old 06-06-2015, 05:45 AM
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bwitherel bwitherel is online now
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Mein Auto: 2006 Z4 3.0si
Agree. Dealer likely needs to reprogram default settings
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Old 06-06-2015, 10:24 AM
BMW Z4 BMW Z4 is offline
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Can a faulty fuel door actuator cause the driver / passenger locks to fail?
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  #6  
Old 06-07-2015, 03:32 AM
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bwitherel bwitherel is online now
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Hmmm. I strongly believe at this point it is the relay/module that unlocks the doors and the fuel door. You can buy new relay and solder in. The board that houses the relay is removable under glove box and then solder new relay to board. Attached threads are really helpful. Good luck with it! Keep posted.

http://www.bmwgm5.com/GM5_Z4_Removal.htm
http://www.bmwgm5.com/GM5_FW_Relays.htm
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