My problem is that lately my car (1999 540/6) doesn't seem to want to lock the doors and arm the alarm with the key fob. This is intermittent, happening about 1/2 the time. My workaround for now is I simply insert the key into the driver's door lock and turn it to the right, which locks the doors and arms the alarm, signaled by the "beep" and flash of turn signals.
I asked my dealer service advisor and a tech who was nearby what could be the deal. They asked if I was getting any "false alarms". When I said no, they said that ruled out engine/hood pin switch failure (a common issue according to them), and so they both asserted that the Driver's side door lock actuator sounded faulty.
They maintained this theory despite my informing them that the door lock actuator works fine when I insert the key into the lock and turn. It's not like there's a mechanical connection there - turning that key makes the actuator pull down the little lock plunger. To my logic, there isn't anything wrong with the door lock actuator.
- The fob unlocks the car every time
- My wife has noticed the same thing with her key
- I replaced the batteries on both keys about a year ago as part of the Inspection II. My wife hardly uses her key, so I seriously doubt it's the battery in the fob.
So what could it be? Driver's door pin switch? If that were so, then shouldn't I be getting false alarms? I am afraid it's some kind of master "alarm module", but the dealer asserted that this was highly unlikely.
My research of previous posts doesn't point to any solid answers except to have the dealer troubleshoot it. In my case the minimum cost of that would be $100 for the diagnostic (possibly higher)...
2006 Honda Odyssey EXL-RES
2006 Honda Accord V6 EX-L Sedan
1999 BMW 540i 6-Speed (Sold to M3UOND on 9/21/06)
1991 Honda Civic Si - Occasional Beater