Catamount90

<center><img src="http://pictureposter.audiworld.com/20695/backup_sensor.jpg"></center><p>My back-up lights are not working. I checked the bulbs (look good) and the trunk wires (for pinching) and everything looks fine. I guess my only other option is to try replacing the back-up light sensor. Does anyone know how much the parts costs and if the sensor simply pulls out of the hole?

AUDI 90 (88)

you got to remove the transmission to do it and switch costs $153CDN. Thats why I haven't replaced mine, have the problem ever since I got the car.

Catamount90

...it sits on top of the transmission case. I'm pretty sure I could get at it with the right tools.

AUDI 90 (88)

Well than I guess your lucky! You can get the switch from the dealer for 153CDN!

MikTip

Yes it simply pulls from its hole!

But make sure you clean the dirt from around it before you pull it so the dirt doesnt fall into your gearbox! ;O)

You can actually dismantle the switch and repair it! Its rather simple design. I used the spring from an ink-pen to fix mine! ;O)

Also check the connector, make sure its connected. I've seen the connector come off.

Catamount90

The switch is really hard to get to... I can barely get a wrench in there so knowing ahead of time which wires to check would be a huge help. Thanks again.

MikTip

Re: Follow the wire coming out of the back-up sensor! ;O)

wisconsin_quat

I can almost bet you the wires that lead into the trunk are bad. I doubt your sensor is bad.