Liftback pops open unexpectantly

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May 25, 2005 | 08:21 AM

Oldbruce

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Liftback pops open unexpectantly

I have a 2000 C5 Coupe. I hve been having an ongoing problem with the liftgate intermittently popping open when the car is parked and the ignition is off. I will park the car and come back out to my garage 20 minutes later and the liftback has released? I have had it back to the dealer on several occasions. The have adjusted the rear latch, replaced the release switch on the dashboard and even replaced the ondeck computer for which none of these things fixed it. The liftback will still intermittently release itself when the car is parked and the ignition is off? Has anyone seen this problem? Does anyone have a wiring diagram for the liftback release mechanism that I can use to trace this problem?

May 25, 2005 | 08:49 AM

cenzo

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From: Hollywood Md

Where are the key FOBs when this happens?

May 26, 2005 | 10:29 AM

Oldbruce

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If what you are asking is where are the car keys and associated RKE transmitter they are in my house and not left in the ignition.

May 27, 2005 | 07:12 AM

cenzo

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From: Hollywood Md

Quote:

Originally Posted by Oldbruce

If what you are asking is where are the car keys and associated RKE transmitter they are in my house and not left in the ignition.

That IS what I was asking. I leave my key on the console so my thought was maybe the hatch-switch part of the fob was malfunctioning on occassion.

May 27, 2005 | 08:09 AM

vetteheadracer

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From: France

2022 C7 of the Year Finalist - Unmodified

To my mind this could be 2 things.

1. Faulty car battery causing a low voltage situation and the electric lock releasing.

2. Faulty switch on the dash.

May 27, 2005 | 08:14 AM

Oldbruce

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Yeah I orginally thought it may have something to do with the key FOB but as I stated I do not leave the keys in the car so I ruled that out. One thing I did detemine was if I unplug the liftback release switch on the dashboard the liftback does not release unexpectantly. So, it must have someething to do with the 12volt ciruit feeding the latch. (I already replaced the switch with a new one). That was why I was hoping to get access to a wiring diagram for the back latch so I can trace all of the sources of the 12 volts to the latch along with the ground circuits.

May 27, 2005 | 12:47 PM

Face

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From: Suffolk, Long Island NY

This was happening with my Buick all the time. Turns out it was from me walking around with the FOB in my pocket, and other keys pressing agaist the buttons.