Central locking in my bmw 320 diesel isnt working it wont open the doors but it will start the engine , the spare key is the same so its not the battery of the keys

The transponder is not effective any longer sometimes the battery of the remote is very low which needs to be replaced

Sounds like the master control in the drivers door is not working.

replace the battery in key head.if unsurehow to take to bmw dealer

Using the key in the door lock should open the doors even if the central locking does not work. There is a deadbolt system in the doors (set by using the key) that makes it difficult to get in. You probably have not used this though.

I have the same issue. I had to remove the door pannal to fix my window and not it wont work. IT will lock with remote and the key but not with button. IF any one can help please email me answer on how to fix it @ [email protected]

You must reset your remote control in order for the lock/unlock to work properly.

To reset remote you would:
1)Insert Key in Ignition Turn to Position 1(Don't Start the Engine) for about 5 seconds
2)Turn Key Off and HOLD the LOCK button on Remote while pressing the UNLOCK 3 TIMES
3)Release both lock and unlock buttons you are holding
4)All doors should automatically unlock

And exit the door and lock with the Remote.

try locking and unlocking the car with the key 3 times slowly ,other than that i have no idea ?? another trick is to disconnect battery and join the cables together for a few minutes to discharge any capacitors that may be holding a charge in the computer..Only other thing i can think of is the main dealers who have the right connectors and software to re set it all .sorry i havent been of any help

insert the key into the drivers side or passender side front door, twist the key and pull open on the handle at the same time and the door will open. It might take a few times to get it, but this does work, source BMW AG Munich.

Hi Craig,
I'm running a E34 Tds Touring with a similar problem, my rear doors and tailgate have dropped of the central locking circuit.
I have been told it is the Central locking Module a large black box under the dash that is faulty, apparently a common problem.
Hope this points you in the right direction,
Please remember to rate my effort!
Paul 'W'
Onyer~EDson(:0) {#><U.K.

with any BMW they have their problems, one is the central locking/immobilizer, the central locking is linked into the immobilizer and vice versa, the immobilizer takes it signal to disarm from the central locking and the ignition key ring. (chip in the key) if one of these starts to play up it has loads of consequences this being one of them. they all need to work together for the system to work properly. you would need to read the alarm and immobiliser codes using an ob2 tool that can detect them, and find the fault some problems it can be the drivers door sensor in the lock this is the main door as its drivers side and it controls all other doors on the central locking. if the switch is worn in any of it movements the system will not know the door has been opened, this does not work on the interior light as that is a switch in the door frame. the door lock is lock unlock and deadlock with key with remote fob its also arm disarm alarm and immobiliser. i have seen in some models there is a sensor auto lock so when you walk away with the key the doors lock automatically all lease parts work together. any one having a problem can cause no signal to be sent to the others in the system to start engine .