Brake Sensor Problems of Buick Lacrosse

The stabilitrak system has an incorrect calibration that may cause the system to not properly detect if a sensor were to malfunction, and the warning light indicating that the system is not operating would not illuminate, as required in the safety standard. The stabilitrak system falsely activates resulting in sudden changes in vehicle handling and deceleration, particularly at higher speeds, which may cause the driver difficulty in maintaining the vehicle's desired path of travel and desired vehicle speed, and could result in a crash without warning.

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The contact owns a 2011 Buick Lacrosse. While driving 45 mph, the brake pedal was depressed. The vehicle skidded and the contact lost control of the vehicle. The stabilitrac and abs warning indicators remained illuminated. The contact stated that the reduced power warning indicator also illuminated. It was diagnosed that there was a defective sensor in the rear driver side wheel hub that needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 105,000. The VIN was not available.

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Tl- the contact owns a 2007 Buick Lacrosse. The contact stated that while driving approximately 65 mph the vehicle suddenly shut off. After restarting the engine the vehicle operated as normal. The vehicle was taken to the dealer who indicated that the key was fault. The key was repaired and the failure was remedied. In addition the abs/traction control sensor had illuminated and the high beam and low beam head light would not operate. The vehicle was taken to the dealer who was unable to determine the cause of the failures. The manufacturer was notified of failures. The failure mileage was 60,000. Jft.

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