Table 1 shows two common suspension related problems of the 2009 Mercury Grand Marquis.
| Problem Category | Number of Problems |
|---|---|
| Rear Suspension problems | |
| Suspension problems |
Mercury Grand Marquis air suspension is terrible. (2009&2010) when going over a bump the car like bottoms out with a loud bang. Car sways a little must hold onto the steering wheel. Could be a safety problem???.
The contact owns a 2009 Mercury Grand Marquis. While driving and exiting off the ramp, the vehicle drove over a bump and the rear of the vehicle elevated highly without warning. The vehicle was driven to the contact's residence. The vehicle was not diagnosed. The dealer replaced the air compressor; however, the failure recurred. The manufacturer was not made aware of the failure. The approximate failure mileage was 65,908.