BMW: Enabling/Disabling Auto Door Lock

BMW E46, E60, E90, E91, E92, E36, E39

You can enable auto door lock for BMW cars in 1980's - 2000's using the remote control key, and doesn't need to pay dealer to enable/disable the feature.

These cars can auto lock all the car doors after the car's speed is above 10 km/h.  This feature is to prevent when you are waiting in traffic light, and motorbike/cyclist will open your door and grab laptop, tablet, jewel, etc from you.

Please note that these car model year doesn't has auto unlock, but added at the later year series.  Again, this is a traditional safety that pass from older car generations.  The reason is to ensure that once the car's engine is turn off, and even the key is pulled, motorbike/cyclist won't be able to open your door and grab laptop, tablet, jewel, etc from you.

There are many wrong information in the internet that this feature can only be enabled using OBDII programmer (those that could control BMW ECU), and often to be the dealer.  By accident, I found that this feature can be enabled and disabled using the remote control key fob.

Auto Door Lock	Steps
Enable	Ensure door is lock.  If not, press the LOCK button on the key fob Insert the car key into the door lock.  Unlock the door by turning clock wise Now the feature is enabled.  You can drive the car to above 10 km/h to confirm the door is auto lock You can only manually unlock & open the door using following methods Pull the inside door handle twice to open the door Press the door unlock button near to the handbrake
Disable	Ensure door is unlock.  If not, press the UNLOCK button on the key fob Insert the car key into the door lock.  Lock the door by turning counter-clock wise Now the feature is disabled.  Get into the car by using key fob (UNLOCK button), or car key (door lock).  Drive the car to above 10 km/h to confirm the door is not auto lock

For E39, if you lock the trunk by turning the key to the lock position, which is horizontal, then you will also enable auto door lock

Annoying Behavior with Auto Lock

1. Everyone needs to pull the door handle twice in order to open the door
2. The rear trunk will be locked
3. If the passenger side has nobody sitting, or rear seats, then the door(s) will remain lock.  So if someone going to get into it, you have to use the remote key fob to unlock the doors