Central lock won't lock - two beeps

[laalves]

Hi all,

Car is 2002 996TT

Today I have the common fault: can't lock the car with the remote and it beeps twice. I can lock it with the 3 key turn thing.

I have read the codes with Durametric (see attached screen capture).

Am I right in assuming I have a bad microswitch (stuck open) in one of the door lock mechanisms? How can I tell which one, left or right? Has any one ever managed to repair/unstick the micro switch or is there no other solution other than replacing the complete door lock, i.e., 8N1837015C for the left door or 3B1837016P for the right door?

This happened to my car on the right door 3 or 4 years ago and the right lock was replaced under extended warranty. Maybe this time it is on the left door?

[Loren]

I would clear the codes - open and close both doors - lock the car -unlock the car -- then read the codes again.

It should be more definitive after that.

[JFP in PA]

I would also note the code 54, which says the radio is not present, a common problem on cars with retrofitted audio system is the missing radio chassis ground.

[laalves]

I would clear the codes - open and close both doors - lock the car -unlock the car -- then read the codes again.

It should be more definitive after that.

This is already after that...

[laalves]

I would also note the code 54, which says the radio is not present, a common problem on cars with retrofitted audio system is the missing radio chassis ground.

Yes I replaced the radio but it's been like that for years, no problem ever came off that.

[jpflip]

Interesting thread here: http://www.renntech.org/forums/topic/32406-door-closed-sensor/?hl=%2Bdoor+%2Bswitch#entry172001

[laalves]

Interesting thread here: http://www.renntech.org/forums/topic/32406-door-closed-sensor/?hl=%2Bdoor+%2Bswitch#entry172001

Indeed. However, as I had nothing to loose, I sprayed some WD40 into the locks, locked the car via 3-keyturn trick and let it sit for a few hours. I went back and it automagically worked.... Go figure.

BTW, my car's symptoms did not include the window not lowering slightly when opening the door in the handle, as many other similar cases in the web I've googled.