The vehicles may have tire pressure and electrical issues
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In the first of two separate actions, Mercedes-Benz USA is recalling 158 model year 2011-2012 S550, S550 CGI, S63, S600 Bi-Turbo, S65 AMG, S550 4-Matic, and S550 CGI 4-Matic and S400 Hybrid vehicles manufactured from March 3, 2011, through July 30, 2011.
The vehicles' Tire Pressure Monitoring System (TPMS) indicators may only illuminate for a portion of the time required by law and, under certain conditions, may not re-illuminate immediately after the vehicle is restarted.
If all four wheel sensors in the recalled vehicles are simultaneously malfunctioning or missing, the TPMS will provide an initial warning, but this warning will not automatically repeat on subsequent ignition cycles, failing to remind the driver that the system is offline. Driving unknowingly with incorrectly inflated tires may result in sudden tire failure, increasing the risk of a crash.
Mercedes Benz will notify owners, and dealers will reprogram the tire pressure monitoring unit, free of charge. The recall is expected to begin in September 2014.
Electrical issue
The second recall involves 218 model year 2013 GLK350 and GLK350 4-Matic vehicles, manufactured from May 31, 2012, through August 2, 2012.
The affected vehicles have voltage in the parking lamp circuit that exceeds the maximum value listed.
The higher illumination level may cause glare to oncoming vehicles, increasing the risk of a crash.
The company will notify owners, and dealers will update the software calibration number (SCN) of the subject electronic control unit. The recall began in September 2014.
In both instances, owners may contact Mercedes Benz at 1-800-367-6372.
