Mercedes-Benz CLS 450, E 300 +6 more: Electrical system — software

Affects Mercedes-Benz CLS 450, E 300, C 300, E 450, S 450, E 400, E300, S560 · 2017–2019 — about 56 vehicles.

The hazard

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 began September 8, 2020. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2020080015.

Critical — crash/injury risk now High — injury risk; see remedy Moderate — fix at next service Low — minor / informational