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Go Back JeepForum.com > Models > Jeep Grand Cherokee & Commander Forums > ZJ Grand Cherokee Forum > Rear Lamp Failure

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Unread 12-24-2002, 12:32 PM   #1
ddoffroad
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1999 XJ Cherokee 
 
Join Date: Aug 2002
Location: Chicago
Posts: 1,479
Rear Lamp Failure

My ZJ's computer always is telling me that I have a rear lamp failure, but I replaced the bulbs and they work fine, but the display keeps telling me "rear lamp failure." I even re set the controls but it wont go away, any sudjestions?

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Unread 12-24-2002, 07:52 PM   #2
Camster
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Join Date: Apr 2002
Location: Winston-Salem, NC
Posts: 308
i had that problem too but i got it fixed at the dealer they probably have to reset something there. way to steal a few extra bucks.
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Unread 12-25-2002, 05:46 PM   #3
MJR
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1988  
 
Join Date: Dec 2001
Location: Costa Mesa, CA
Posts: 1,080
Here's a list of potential problems that can cause this.

Burnt out or wrong bulbs in the third brake light (CHMSL). They must be 921 or 922 bulbs.

Burnt out front parking/side marker light bulbs.

Corrosion in the connectors at the socket, wiring harness, etc...

A burnt out lamp outage module due to a improperly installed aftermarket trailer tow wiring harness.
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