The bolts securing the secondary hood latch may not have been properly tightened during vehicle assembly on 23 vehicles. The could result in the secondary hood latch becoming ineffective. If the hood were not properly secured by the primary latch and the the secondary latch was not functioning, the hood could open while driving, increasing the risk of a crash. Dealers will check and retighten the bolts on the secondary latch as necessary to correct this concern.
The voltage to the parking lamps may be too high, resulting in lights that are too brightly illuminated. Dealers will update the software calibration number of the electronic control unit free of charge to resolve the concern.
Certain vehicles were assembled with a right side window curtain airbag that was stitched together improperly. In the event of a crash, this airbag may deflate more quickly than intended, reducing the protection it may provide to vehicle occupants. Mercedes-Benz dealers will replace the right side window curtain air bag on affected vehicles to correct this concern.
These vehicles are equipped with a new type of A/C refrigerant - R1234yf. Testing has determined that escaping R1234yf refrigerant may ignite under specific conditions. A severe frontal crash may rupture one of the air conditioner refrigerant lines, which can result in a gaseous mixture of refrigerant being released into the engine compartment. The resulting fire could spread to additional combustible materials. Dealers will replace the R1234yf refrigerant with R134a (which is the type that had been used previously) along with new refrigerant lines (hoses) designed specifically for R134a.
Mercedes-Benz is recalling certain model year 2011 G550 and G55 (AMG) vehicles manufactured from September 20, 2010, through April 27, 2011. If the front passenger airbag were to deploy, parts of its molding strip could become loose and become a projectile in the passenger compartment. This projectile would increase the risk of personal injury during airbag deployment. Dealers will reinforce the connection between the molding strip and airbag cover flap to correct this concern.
On certain station wagon models, a connecting rod for the load leveling rear suspension system may fail. This could result in reduced vehicle control, increasing the risk of a crash. Dealers will inspect and replace the level control connecting rod as necessary to correct this concern.
The tire pressure monitoring system warning light may not come on or stay on for appropriate lengths of time. Dealers will reprogram the tire pressure monitoring unit free of charge to resolve the concern.
The Diesel fuel filter may leak from the area around the heating component. Fuel may leak onto the roadway, increasing the risk of a crash. A fuel leak always increases the risk of a fire. Dealers will replace the Diesel fuel filter to correct this concern.
It has been determined that, under certain circumstances, use of the brake pedal may not disengage the cruise control as expected. All other means of disengaging the cruise control should remain effective. If the driver were to "pump" the brake pedal instead of applying consistent force, the level of force necessary to disengage the cruise control may be unusually high. Dealers will perform the repairs necessary to correct this concern. The recall is expected to begin September of 2011.
Forty-one vehicles may have a front engine pulley that was manufactured with an insufficient adhesive where the inner mass damper ring attaches to the vibration damper. If the inner ring were to separate with the hood open and the engine running, personal injury could result. Dealers will inspect and replace the affected parts to correct this issue. This recall is expected to begin during April of 2011.