Mercedes-Benz USA (MBUSA) is recalling six model year 2018-2019 S560s, S560 Cabrioles, and S560 4MATICs with 8-cylinder gasoline engines.
The threaded connection between the camshaft idler gear and the crankcase may be improperly tightened, possibly causing the idler gear to detach from the crankcase.
A detached idler gear can damage the engine, resulting in a stall and increasing the risk of a crash.
What to do
MBUSA will notify owners, and dealers will replace the engine free of charge.
The recall is expected to begin January 14, 2020.
Owners may contact MBUSA customer service at (800) 367-6372.