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Old 11-02-2014, 12:03 PM
97 SL320 97 SL320 is offline
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Join Date: Jan 2012
Posts: 7,050
The key probably needs resynced with the car.

For the older systems, pressing the unlock button on the key twice followed by inserting key in the ignition and turning to run worked. This confirmed that the remote trying to unlock the car actually belonged to the car.

There should be something in the owner manual.

Also, even with a bad battery, the key will start the car as it is a separate system from remote functions..
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