First, a little background:
The door locks on my ’88 BMW 735i (e32) have been something of an enigma to me; they worked, but they worked differently than other cars I’ve had. Even differently when compared to my ’84 BMW 528e.
With the early BMW’s, locking the doors generally involves pushing down on the door lock knob before shutting the driver’s door or putting the key in the outside lock and turning it to the right; that locks all four doors, the trunk and the fuel filler door. To unlock them all, insert the key and turn it to the left. And the same trick works using the key in either front door or the trunk lock.
In the late ’80’s, BMW added a new feature known as the Deadbolt; it prevents the door from opening with anything but the key. To deadbolt the car you put the key in the door & turn it one notch farther to the right. I say ‘notch’ but there’s really no notch when you turn the lock; there’s no tactile, audible or visible indication that anything different has happened at all. The doors just appear to be locked. But they will not open unless you use a key to turn the lock, no matter what. Presumably, if I were sitting inside the car and someone turned the key to put the doors into deadlock mode, I’d be stuck in there until someone with a key unlocked the car from the outside. The lock knob will not move. No. Matter. What.
As with most well-intentioned systems like this, when everything is working properly, it works great and is a decent theft-deterrent… But throw two decades of use at a system that really has no prescribed maintenance schedule, and you have the potential for problems. And of course that’s what I’ve been dealing with. Story of my life.
Help! My Door Is Locked, And I Can’t Open It!
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