Reset low battery message on buick lacrosse

SOURCE: keyless entry remote

Check inside the remote case...there's instructions printed that tell you to hold the lock and unlock buttons for 7 seconds to reset the remote. I'm in the middle of replacing batteries myself. Let me know if it works.

SOURCE: Setting up keyless remote entry with a new remote

1. Close all doors.
2. Press and hold the Unlock button on door lock switch on drivers door.
Hold until instructed to release.
3. Insert and remove key from ignition 2 times. Do Not turn ignition.
4. Insert key in ignition a third time and leave key in ignition. Do Not turn ignition.

5. Release door lock switch on drivers door panel.
A Chime will sound 3 times indicating that you are in programming mode.
6. Press both the Lock and Unlock buttons on the remote up to 30 seconds.
A chime will sound 2 times if remote has programmed successful.
7. Repeat step 6 if you are programming additional remotes.
8. Remove key from ignition to exit programming mode.

SOURCE: Keys won,t lock or unlock doors

Aparrently you have to reset the remote, I have the same problem and a trying to figure out how to reset it.

SOURCE: My remote won't start my 2005 Buick LaCross. I

Both my remotes no longer work. I will be ordering new ones off Ebay and having my dealer program them. New ones from Buick are very pricey.

Harvey N Tawatao

• 3854 Answers
• Posted on Dec 13, 2009

SOURCE: programing instructions for buick 2006 lacrossekeyless remote fob

Transmitter ProgrammingImportant: All transmitters which are to be recognized by the remote control door lock receiver (RCDLR) must be programmed in a single programming sequence. If the system is placed in program mode it will erase all previously programmed transmitters upon the receipt of the programming signal from the first transmitter. Up to 4 transmitters can be programmed. Do not operate or program the transmitters in the vicinity of other vehicles that are in the keyless entry program mode. This prevents the programming of the transmitters to the incorrect vehicle.

1. Install a scan tool.
2. Use the scan tool in order to access programming: Vehicle Control System/Computer Integrating System/Module Setup/BCM/Program Key Fobs.
3. Press the START soft key on the scan tool. Important: The scan tool must stay connected until all of the transmitters are programmed.
   
4. Press and hold the LOCK button and the UNLOCK button simultaneously on one transmitter. After a delay of 5-10 seconds, the scan tool will indicate that the transmitter is programmed.
5. Repeat the previous step in order to program up to 4 transmitters.
6. Remove the scan tool.
7. Operate the transmitter functions in order to verify correct system operation.