The problem
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2022 C300 vehicles. Moisture accumulation in the trunk may leak into the signal acquisition module (SAM), causing an electrical short circuit.
The risk
An electrical short circuit in the SAM could lead to various malfunctions, such as rear exterior lighting failure, unintentional rear seat folding, and rearview camera failure, increasing the risk of a crash or injury. In addition, an electrical short circuit might increase the risk of a fire.
The fix
Dealers will install a cover for the SAM, free of charge. Owner notification letters were mailed December 2, 2022. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2022090011.
Recall details
| NHTSA campaign | 22V-678 (22V678000) |
|---|---|
| Manufacturer number | 2022090011 |
| Manufacturer | Mercedes-Benz USA, LLC |
| Component | Electrical system › Wiring › Rear compartment/trunk |
| Report date | September 12, 2022 |
| Owners notified | December 2, 2022 |
| Vehicles affected | 6,752 |
| Initiated by | Manufacturer |
Vehicles covered
Owner complaints about the electrical system
Frequently asked questions
Is the recall 22V-678 repair free?
Yes. Mercedes-Benz dealers will fix the problem at no cost: Dealers will install a cover for the SAM, free of charge. Owner notification letters were mailed December 2, 2022. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2022090011.
How do I know if my car is included?
Not every vehicle of the listed model years is affected — the recall covers 6,752 vehicles built in a certain window. Check your 17-character VIN with our VIN recall check or at nhtsa.gov/recalls.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.