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Central locking system randomly locks and unlocks doors - 1999 A4 Audi
Hi,
I have several problems with the central locking system and alarm of this unmodified 1999 Audi A4, which may or may not be related: 1. The central locking system will lock and unlock doors at random. This can happen when the car is moving, parked, or unattended parked! 2. A problem linked to the locking system occured yesterday at a gas station. I would unlock the doors, and the doors would immediately lock again (including the gas door) - so that I could not fill up the car. The problem was solved by asking someone to stand by the gas door and quickly opening it while I was pushing on the unlock button on the driver side door. 3. The remote control keys don't work, and I am unsuccessful at attempting to reprogram them. 4. The alarm system blinking light does not light over 90% of the time (it has lit only once recently). 5. The trunk lights don't work when you open the trunk. I add this info in case the problems above are caused by a malfunctioning switch detecting the status of the trunk closure. Has anybody experienced these problems... What should I look at or test to troubleshoot the problem and fix it? I only have a voltmeter for now... Cheers! |
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#2
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Take the key fobs away from the general vicinity of the car (100 ft or so)
and, one at a time, bring them to the car and work the locks. Does it do it with one and not the other? If so, you may have a bad switch on the key fob that is causing the doors to lock. Ken "1970 Suzuki TS250" > wrote in message om... > Hi, > > I have several problems with the central locking system and alarm of > this unmodified 1999 Audi A4, which may or may not be related: > > 1. The central locking system will lock and unlock doors at random. > This can happen when the car is moving, parked, or unattended parked! > > 2. A problem linked to the locking system occured yesterday at a gas > station. I would unlock the doors, and the doors would immediately > lock again (including the gas door) - so that I could not fill up the > car. The problem was solved by asking someone to stand by the gas > door and quickly opening it while I was pushing on the unlock button > on the driver side door. > > 3. The remote control keys don't work, and I am unsuccessful at > attempting to reprogram them. > > 4. The alarm system blinking light does not light over 90% of the time > (it has lit only once recently). > > > 5. The trunk lights don't work when you open the trunk. I add this > info in case the problems above are caused by a malfunctioning switch > detecting the status of the trunk closure. > > Has anybody experienced these problems... What should I look at or > test to troubleshoot the problem and fix it? I only have a voltmeter > for now... > > Cheers! |
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