OFFICIAL CAMPAIGN FILE

NHTSA campaign 20V449000

NHTSA campaign 20V449000 covers 10 published year-and-model reports from 1 makes in this index and lists 56 potentially affected units campaign-wide. VIN eligibility must be checked separately.

Report received July 31, 2020 · Snapshot September 21, 2026

01 / DEFECT RECORD

What NHTSA campaign 20V449000 says

NHTSA campaign 20V449000 identifies ELECTRICAL SYSTEM, SEAT BELTS and states that 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.

Defect summary

Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2019 C300, C300 Coupe, CLS450, E450 Coupe and S450, 2017-2019 E300, 2018 E400 Coupe, E400 Stationwagon, and 2018-2019 S560 vehicles 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.

Consequence summary

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.

02 / CORRECTIVE ACTION

Remedy for NHTSA campaign 20V449000

For NHTSA campaign 20V449000, the filed corrective action says: 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.

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.

Owner notification: September 8, 2020
Filing manufacturer: Mercedes-Benz USA, LLC.
Component groups: ELECTRICAL SYSTEM, SEAT BELTS

03 / PUBLISHED VEHICLES

Vehicles listed under NHTSA campaign 20V449000

RecallRoad links 10 year-and-model reports associated with NHTSA campaign 20V449000; the list reflects published source rows, not individual VIN coverage.