When I place the car in reverse, the reverse lamps do not light. The bulbs are fine because they come on when I lock or unlock the car with the remote. I checked the IPC codes and there is an H error code with B2482, Backup Lamp Relay Circuit. Does anyone know if this error means the relay is shot? Any suggestions on how I can test the relay? Is this relay located in the fuse panel in the engine compartment? Thanks in advance.

 

MM6 or A4?

 

Reverse switch.

Mounted on the tansmission and about $20 from any good auto parts store.

The big deal is jacking the car up high enough to crawl under and replace the stupid thing.

 

I'm on the third one on my son's Camaro. The switch keeps breaking down internally and shorting out, in his case blowing the fuse when you select reverse.

Heres a diagram to show where it fits. Just be ready with the new one to minimise fluid leaks.




DTC B2482
Circuit Description

The backup lamp circuit is part of a standard backup lamp system except for the addition of a relay and the BCM providing a control circuit. The BCMcan ground the backup lamp relay control circuit in order to energize the relay and turn ON the backup lamps, allowing the backup lamps to be used for Universal Theft Deterrent (UTD) and approach lighting functions. The BCM monitors the voltage level on the backup lamp control circuit. Whenthe BCM commands the relay ON, the voltage level on the control circuit should be low. When the relay is OFF, the voltage level should be high. If the BCM detects a voltage level other than expected, a malfunction ispresent and a DTC will set.
Conditions for Setting the DTC

* The BCM detects a low voltage level (an open or a short to ground) in the backup lamp relay control circuit.
* The BCM can only test for this condition with the backup lamp relay de-energized.
* The condition must be present for 2 seconds.

Action Taken When the DTC Sets

Stores a DTC B2482 in the BCM memory.
Conditions for Clearing the DTC

* This DTC requires an ignition cycle in order to change from current to history.
* The BCM no longer detects a high voltage level in the backup lamp relay control circuit only with the backup lamp relay de-energized.
* A history DTC will clear after 50 consecutive ignition cycles if the condition for the malfunction is no longer present.
* Use the IPC clearing DTCs feature.
* The BCM receives the Clear Code command from the scan tool.

 

Assuming he has a 6spd, I would agree. How did you determine which transmission he has? If it's an A4 the cost for that (neutral safety/back-up lamp) switch will be in the $30-$40 range.

 

Yep, the switch is defective.

 

Thanks for the help. I have a MN6. The car will be on a hoist this week and I will replace the switch...

 

I took an educated guess.

 

Scott

Worth filling out your profile so that you get information specific to your car. You can see the discussion and we'd assumed you have an A4.

The part # for the B/U switch should be 14069600 according to my parts manual but check with one of the Forum vendors before you place the order to be certain

Let us know how the fix goes.

 

Wish I had seen this thread before I posted the same issue... The search function on the forums doesn't seem to work!

Great info guys, thanks.