2006 Buick Lacrosse with defective passenger airbag sensor. Consumer states that the light will go from off to on at any time while someone who weighs more then 125 pounds is in the front passenger seat. The consumer stated when the drivers seat belt was buckled, the red light on the dash would display the seat belt was unbuckled. Updated 12/08/11

- Springfield, MO, USA

No incident as of now, but is a serious safety concern. The passenger sensing device is not working properly. At times the passenger front airbag will not turn on with my wife in passenger seat. It may work for two weeks and then not enable at random for two or three days. Sensor was replaced with no improvement.

- Nacogdoches, TX, USA

We have a serious defect with the 2006 Buick Lacrosse. At cool/cold temperatures (below 57 of) the passenger air bag sensor does not work! the passenger airbag is off. Having the passenger jump up and down in the seat does not activate the sensor/airbag. The dealer so far has refused to repair the device.

- Palmetto, FL, USA

We have a serious safety issue with the 2006 Buick Lacrosse. This model has a passenger side seat sensor which detects whether a passenger is seated in the seat or not. If it detects no passenger, the passenger air-bag is turned "off." At temperatures below 55. This passenger side seat sensor does not work! my wife first noticed it on a cold morning, I had her bounce up and down on the seat - no response. The air-bag remained "off." This happened everytime the temperature as indicated on the dash was 55 of or lower. Only after the heater was on and the cabin temperature came closer to room temperature did we hear a "click!" and the indicator then said the air-bag was "on." If this is a design or manufacturing flaw in these seat sensors, then I can see thousands of passengers being possibly thrown through the front windshield because "the computer" "knows" that no one is sitting in the front seat and has therefore turned the air-bag "off." This occurred at least 5 times in January when we were in Virginia the first week of January. Have referred this to the dealer and wrote a two page letter to the owner; the service manager says that "that's the way they're supposed to work." My wife and I are skeptical.

- Palmetto, FL, USA