Technical service bulletins are instructions a manufacturer sent its dealers about a known fault. They are not recalls and the work is usually not free, but they are the clearest signal of a problem the manufacturer already knows about.
511312
Service Bulletin/Repair Instructions
As per Mercedes Interim Recall Notice 21V042, one or more of the rear-wheel speed sensors may experience an electrical failure, which potentially could lead to a disablement of the Electronic Stability Control control unit functions. If ESP control unit functions are disabled, vehicle driving stability may be impacted under certain driving conditions, increasing the risk of a crash.
511293
Service Bulletin/Repair Instructions
In our continuing efforts to assure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, MB USA is extending the warranty on the wheel speed sensors ("WSS") for the affected vehicles to a total of 10 years/ no mileage limitations from the vehicle's original New Vehicle Limited Warranty start date. This addendum to the WSS coverage applies to the vehicle regardless of ownership.
511268
Service Bulletin/Repair Instructions
Mercedes-Benz USA is extending the warranty of the exhaust gas recirculation (âÂÂEGRâÂÂ) valve for the affected vehicles to a total of 11 years / 120,000 miles from the vehicleâÂÂs original New Vehicle Limited Warranty start date. This addendum to the EGR valve coverage applies to the vehicle regardless of ownership.
510660
Service Bulletin/Repair Instructions
According to the attached letter from Daimler AG/Mercedes-Benz; ?Daimler AG (DAG), the manufacturer of the Mercedes-Benz Sprinter vehicles, has determined that the glass cover of the exhaust gas temperature sensor (upstream of turbocharger B16/11) on certain Model Year 2011 ? 2015 Sprinter vans could break when exposed to extreme high or low temperatures. This could result in incorrect temperature sensor readings. If this occurs the ?Check Engine? light will be illuminated and the vehicle will experience a loss of power and enter into a limp home mode.?