Anyone:
My battery drains overnight. My mechanic says it's the locking system relay. The number 8 fuse needs to be taken out when I park the car which is for the locking circuit. It could be a number of thing, but is there anyone out there who has had a simular problem? Please advise.
Thanks
Shep in Indiana

The central locking switch unit in the driver's door frequently fails. The failure mode is to 'engage' the locking solnoid, so a healthy current is being drawn continuously (thereby draining the battery). Erratic behavior when using the key in the driver's door to engage the central locking is a prime tipoff. The best cure is to simply replace the switch unit. A new one is about $85 from Volvo, or maybe find one in a boneyard and see if it works.

For both of you I'd first have a look inside the driver's door, to see if there's a problem with the lock button linkage bent or binding.
The driver's door is a manual lock, and has no lock motor. The rod has a switch in the middle of it, kind of a black cylindrical thing, that detects a pull or push of the lock knob. IF it's stuck in the on position, it'll be running the lock motors constantly. However, I would think that this would cause the doors to either re-lock themselves as soon as you let go of the key or button- or to force themselves open, making it impossible to lock. You didn't mention these problems, so possibly it is just confined to the relay.
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Rob Bareiss, New London CT ::: '87 244DL/M47- 225K, 88 744GLE- 209K, 91 244 183K. Also responsible for the care and feeding of: 88 745GLE, 229K, 88 244GL, 146K, 87 244DL, 235K, 88 245DL, 236K

Mine does it too, usually only when it's cold outside. I used process of elimination to figure out that it's the circuit with central locking that is draining. I'd like info on this problem as well. Greg