Buick LaCrosse: Unable to Connect to OnStar 
Message - OnStar Additional Information - OnStar - Buick LaCrosse Owners ManualBuick LaCrosse: Unable to Connect to OnStar Message

If there is limited cellular coverage or the cellular network has reached maximum capacity, this message may come on. Push call again or try again after driving a to try the call again or try again after driving a few miles into another cellular area.

    Cellular and GPS Antennas
    Avoid placing items over or near the antenna to prevent blocking cellular and GPS signal reception. Cellular reception is required for OnStar to send remote signals to the vehicle. ...

    Vehicle and Power Issues
    OnStar services require a vehicle electrical system, wireless service, and GPS satellite technologies to be available and operating for features to function properly. These systems may not o ...

    See also:

    If the tire pressure warning light frequently comes on after blinking for 1 minute (vehicles with a tire pressure warning system)
    If the tire pressure warning light frequently comes on after blinking for 1 minute when the engine switch (vehicles without a smart key system) or the “ENGINE START STOP” switch (vehicles with ...

    Windshield Washers
    To use the washer, pull the windshield wiper/washer control lever toward you and hold it for as long as washer spray is desired. If you activate the washer while the wiper control is in the del ...

    Check the fluid level monthly.
    1. Drive the vehicle several miles to raise the temperature of the transmission fluid up to normal operating temperature; 158 to 1768F (70 to 808C) is normal. 2. Park the vehicle on a level surface ...