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Key fob remote unlock/lock not functioning

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I have searched the RTFM and I am rapidly coming to the conclusion my only hope is a dealer reprogramming. But if anybody has any other suggestions I have nothing to lose trying them.

2003 C2 Coupe. On vacation for about 2 weeks with the car parked. When I return, remote #1 will not wirelessly unlock/lock the car. I set off the alarm opening the door. Turning the key in the ignition shuts off the alarm and starts the engine.

- Remote #2 works OK, no problems.

- I lock and unlock the door with the key and press the remote button - remote #1 is still dead (but LED flashes)

- I change remote #1 battery - still dead

- I try the reverse battery polarity trick to restart the processor - when I press the button, the LED just flashes slowly instead of a fast flash, but the remote is still dead.

- I reread all the posts about dead remote keys, RTFM, try every combination of turning the key in the lock and pressing the button - the remote is still dead.

- Resigned to being out $150 to have the dealer reprogram the remote, I compose this last hope post :help:

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i has exactly the same symptoms you are describing, changed the battery in the fob etc and still no luck.

try the 3 methods mentioned by X-UFO in this thread - Central Locking Thread

then seperate your key fob, then hold the battery whilst depressing he unlock button.

There are a couple or contact points on the negative side of the battery in the fob (3 from memory) and 1 or 2 on the positive side, mine appeared to be contacting the connectors enough to light up the light on the fob but not signal to the alarm and central locking.

If you try this and it works (i.e. unlocks the car) you can wedge a small spring or piece of felt in the key fob when you put it back to together to make it work everytime.

This method worked for me a saved me the expense of a new key, fob, key cutting and programming.

Hope this helps,


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