Mercedes-Benz USA (MBUSA) is recalling 56 model year 2019 C300s, C300 Coupes, CLS450s, E450 Coupes & S450s, model year 2017-2019 E300s, model year 2018 E400 Coupes, E400 Stationwagons, and model year 2018-2019 S560s that have previously had the instrument cluster replaced.
The software in the replaced instrument cluster may cause the seat belt warning system to not operate properly, only displaying a solid warning light if either the driver or passenger seat belt is unfastened, instead of a blinking light with an audible tone.
Without the audible tone and blinking warning light to remind the front seat occupants that their seat belts are not buckled, they may forget to buckle their seat belt, increasing their risk of injury in the event of a crash.
What to do
MBUSA will notify owners, and dealers will update the instrument cluster software free of charge.
The recall is expected to begin September 29, 2020.
Owners may contact MBUSA customer service at (800) 367-6372.