Why is the door ajar light on on my Jetta?

A common problem an A4’s after they accumulate some miles. Also, you may have some strange behavior with the central locking system (alarm). “Stupid Door Switch!!! 3 dollar fix” is the thread ye seek. Near Hagerstown MD. Jetta 2001 Died by Truck one snowy day.

Is the door ajar light on the driver’s side?

The door-ajar light is on, but it can’t possibly be the driver’s side because it’s not making the ding-ding sound. When I open the driver’s side door, it starts making the sound. So how can it be the driver’s side?

Why is my A4 door latch not working?

Thanks for your work to help preserve our rights and freedom! The most likely cause are the micro-switches in the drivers door latch are shot. 2nd most likely, only because those doors are used a lot less, are micro-switches in one of the other door latches are shot. A common problem an A4’s after they accumulate some miles.

What kind of switch do I need to replace my drivers door sensor?

If else its the micro switch and it would need to be replaced with that radio shack part number #275-016A (SPDT switch w/o roller). You will need two small screws to secure it inplace of the old switch. A few days after spraying the lock with silicone lub, I sprayed it again, and gave it a good soaking.