Mercedes-Benz recalls 3,800 total vehicles in two campaigns

Mercedes-Benz is recalling 3,813 vehicles in two campaigns in the US, and the affected models span the top and bottom of the brand's product range.

The larger recall covers 2,956 examples of the 2014 S63 AMG sedan and 2015-2016 S63 AMG 4Matic sedan and coupe. According to the National Highway Traffic Safety Administration, a software error in the engine control unit can cause the high-performance luxury cars to stall when coasting to a stop. While this can initially appear to be normal operation of the stop/start system, the engine doesn't restart when the driver releases the brake pedal. Getting moving again involves shifting into neutral or park and going through the ignition process.

The repair campaign will begin on December 8, and the models will need an update to the engine control unit software. This will also be the second recent recall for the 2015 S63 AMG 4Matic Coupe because another fix will replace their seatbelts.

In a more complicated issue, Mercedes is recalling 857 examples of the 2015 CLA250, CLA250 4Matic, GLA250, GLA250 4Matic, and the 2016 SLK300 because a weld on the camshafts might be in the wrong place "due to a production deviation at a supplier." Potentially, the important parts could break and damage the engine. Beginning November 30, dealers will replace the affected camshafts as a precautionary measure. Show full PR text RECALL Subject : Engine Stall due to Engine Control Unit Software
Report Receipt Date: OCT 14, 2015
NHTSA Campaign Number: 15V652000
Component(s): ELECTRICAL SYSTEM , FUEL SYSTEM, GASOLINE
Potential Number of Units Affected: 2,956

All Products Associated with this Recall
Vehicle Make Model Model Year(s)
MERCEDES BENZ S63 AMG 2014
MERCEDES BENZ S63 AMG 4MATIC 2015-2016

Details
Manufacturer: Mercedes-Benz USA, LLC.

SUMMARY:
Mercedes-Benz USA LLC (Mercedes-Benz) is recalling certain model year 2014 S63 AMG sedans and 2015-2016 S63 AMG 4Matic sedans and coupes manufactured May 14, 2013, to September 18, 2015. In the affected vehicles, due to a software error within the engine control unit, the vehicle may stall when coasting to a stop, such as at a traffic light.

CONSEQUENCE:
The vehicle stall may be interpreted by the driver to be a planned shut-down as part of the ECO-Start-function. However, the engine will not restart automatically after releasing the brake pedal, immobilizing the vehicle and increasing the risk of a crash.

REMEDY:
Mercedes-Benz will notify owners, and dealers will update the engine control unit software, free of charge. The recall is expected to begin on December 8, 2015. Owners may contact Mercedes-Benz customer service at 1-800-367-6372. Mercedes-Benz's number for this recall is 2015100003.

NOTES:
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.


RECALL Subject : Camshaft Weld may Fail and cause Engine Stall
Report Receipt Date: OCT 16, 2015
NHTSA Campaign Number: 15V662000
Component(s): ENGINE AND ENGINE COOLING
Potential Number of Units Affected: 857

All Products Associated with this Recall
Vehicle Make Model Model Year(s)
MERCEDES BENZ CLA250 2015
MERCEDES BENZ GLA250 2015
MERCEDES BENZ SLK 300 2016

Details
Manufacturer: Mercedes-Benz USA, LLC.

SUMMARY:
Mercedes-Benz USA, LLC (Mercedes-Benz) is recalling certain model year 2015 CLA250, CLA250 4Matic, GLA250, GLA250 4Matic, and 2016 SLK300 roadster vehicles manufactured July 17, 2015, to August 31, 2015. The affected vehicles have intake or exhaust camshafts whose welds may fail and possibly cause engine damage.

CONSEQUENCE:
Engine damage may result in a stall, increasing the risk of a crash.

REMEDY:
Mercedes-Benz will notify owners, and dealers will replace the affected camshafts, free of charge. The recall is expected to begin November 30, 2015. Owners may contact Mercedes-Benz customer service at 1-800-367-6372. Mercedes-Benz's number for this recall is 2015100006.

NOTES:
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov. Source