The defect
Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2019 C300 Cabrio, C300A Cabrio 4MATIC, C300 Coupe, C300 Coupe 4MATIC, C300, C300 4MATIC, C43 AMG Cabrio 4MATIC, C43 AMG Coupe 4MATIC, C43 AMG 4MATIC, C63 AMG Cabrio, C63S AMG Cabrio, C63 AMG Coupe, C63S AMG Coupe, C63 AMG, C63S AMG, CLS450, CLS450 4MATIC, CLS53 AMG 4MATIC, E300, E300 4MATIC, E450 Cabrio, E450 Cabrio 4MATIC, E450 Coupe, E450 Coupe 4MATIC, E450 Wagon 4MATIC, E450 4MATIC, E53 AMG Cabrio 4MATIC, E53 AMG Coupe 4MATIC, E53 AMG 4MATIC, E63S AMG 4MATIC, E63S AMG Wagon 4MATIC, S450, S450 4MATIC, S560 Cabrio, S560 Coupe 4MATIC, S560, S560 4MATIC, S560 4MATIC Maybach, S63 AMG Cabrio 4MATIC, S63 AMG Coupe 4MATIC, S63 AMG 4MATIC, S65 AMG Cabrio, S65 AMG, and AMG GT53 Coupe 4MATIC vehicles, and 2020 GLC300 Coupe 4MATIC, GLE350 4MATIC, and GLE450 4MATIC vehicles equipped with the Driver Assistance Package. A software error in the radar sensor control unit may impair the functionality of the Active Brake Assist.
The risk
An impaired Active Brake Assist may not automatically apply partial or full braking as expected, increasing the risk of a crash.
The remedy
MBUSA will notify owners, and dealers will update the radar sensor control unit software, free of charge. The recall began September 13, 2019. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2019080008.
NHTSA's own wording · initiated by MFR
Vehicles covered
Components: FORWARD COLLISION AVOIDANCE: SENSING SYSTEM: RADAR
Model years in this recall
NHTSA complaints and the number of recall campaigns for each model year this recall covers.
| Model | Year | Complaints | Recalls |
|---|---|---|---|
| Mercedes-Benz AMG C43 | 2019 | 7 | 12 |
| Mercedes-Benz AMG C63 | 2019 | 1 | 10 |
| Mercedes-Benz AMG CLS53 | 2019 | 6 | 10 |
| Mercedes-Benz AMG E53 | 2019 | 6 | 12 |
| Mercedes-Benz AMG E63S | 2019 | 2 | 6 |
| Mercedes-Benz AMG GT53 | 2019 | 3 | 8 |
| Mercedes-Benz AMG S63 | 2019 | 3 | 7 |
| Mercedes-Benz AMG S65 | 2019 | 0 | 4 |
| Mercedes-Benz C 300 | 2019 | 69 | 17 |
| Mercedes-Benz CLS 450 | 2019 | 15 | 12 |
| Mercedes-Benz E 300 | 2019 | 29 | 8 |
| Mercedes-Benz E 450 | 2019 | 17 | 12 |
| Mercedes-Benz GLC 300 | 2020 | 69 | 16 |
| Mercedes-Benz GLE 350 | 2020 | 91 | 27 |
| Mercedes-Benz GLE 450 | 2020 | 26 | 32 |
| Mercedes-Benz S 450 | 2019 | 3 | 8 |
| Mercedes-Benz S560 | 2019 | 5 | 10 |
Other forward collision avoidance recalls in 2019
4 of the 880 recall campaigns reported to NHTSA in 2019 concerned the forward collision avoidance; Mercedes-Benz USA, LLC. filed 199 campaigns in all.
| 19V907000 19 Dec 2019 | Mazda North American Operations |
| 19V539000 19 Jul 2019 | Kia Motors America |
| 19V148000 1 Mar 2019 | Chrysler (FCA US LLC) |
NHTSA recalls (public domain) · all recalls of 2019