Buick LaCrosse: Programming Transmitters to 
the Vehicle - Remote Keyless Entry (RKE) System Operation - Keys and Locks - Keys, Doors, and Windows - Buick LaCrosse Owners ManualBuick LaCrosse: Programming Transmitters to the Vehicle

Only RKE transmitters programmed to the vehicle will work. If a transmitter is lost or stolen, a replacement can be purchased and programmed through your dealer.

The vehicle can be reprogrammed so that lost or stolen transmitters no longer work. Any remaining transmitters will need to be reprogrammed. Each vehicle can have up to five transmitters matched to it.

    Keyless Trunk Opening
    Lift up on the touch pad located above the license plate to open the trunk if the RKE transmitter is within range. ...

    Programming with a Recognized Transmitter (Keyless Access Vehicles Only)
    A new transmitter can be programmed to the vehicle when there is one recognized transmitter. To program, the vehicle must be off and all of the transmitters, both currently recognized and new ...

    See also:

    Vehicle tool kit
    The vehicle tool kit can be found in the stowage well under the trunk floor/cargo compartment floor. Depending on the vehicle equipment, the vehicle tool kit is on the lefthand side or the rig ...

    Rear Compartment Fuse Block
    The rear compartment fuse block is located on the left side of the trunk behind a cover. Vehicles with eAssist do not have a rear compartment fuse block. The vehicle may not be equipped ...

    Blind Spot Monitoring (BSM) System
    The Blind Spot Monitoring (BSM) system is designed to assist the driver by monitoring blind spots on both sides of the vehicle to the rear in certain situations such as when changing lanes on road ...