Buick LaCrosse: Underbody Maintenance - Exterior Care - Appearance Care - Vehicle Care - Buick LaCrosse Owners ManualBuick LaCrosse: Underbody Maintenance

Use plain water to flush dirt and debris from the vehicle's underbody.

Your dealer or an underbody car washing system can do this. If not removed, rust and corrosion can develop.

    Body Component Lubrication
    Lubricate all key lock cylinders, hood hinges, liftgate hinges, and the steel fuel door hinge unless the components are plastic. Applying silicone grease on weatherstrips with a clean cloth ...

    Sheet Metal Damage
    If the vehicle is damaged and requires sheet metal repair or replacement, make sure the body repair shop applies anti-corrosion material to parts repaired or replaced to restore corrosion ...

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    Headlamps fogged up on the inside
    The headlamps may fog up on the inside if there is high atmospheric humidity. •► Drive with the headlamps switched on. The level of moisture diminishes, depending on the length of the jo ...

    Octane rating tips
    Using unleaded gasoline with an octane rating lower than recommended can cause persistent, heavy “spark knock.” (“Spark knock” is a metallic rapping noise.) If severe, this can lead to eng ...

    NISSAN Intelligent Key™ battery discharge
    If the battery of the Intelligent Key is almost discharged, the guide light A of the Intelligent Key port blinks and the indicator appears on the vehicle information display. See “Vehicle infor ...