The defect
Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2019 CLS 450 Coupe and CLS 450 Coupe 4MATIC vehicles equipped with 6-cylinder gasoline engines. The electrical line that supplies power to the engine coolant pump may contact the engine fan and chafe, possibly causing a malfunction of the coolant pump or a deactivation of the 48V on-board electrical system.
The risk
A malfunctioning engine coolant pump can increase coolant temperatures, possibly leading to an engine stall. Deactivation of the 48V on-board electrical system can cause the vehicle to not restart after using the ECO start/stop function or "Glide" mode. Either of these scenarios can increase the risk of a crash.
The remedy
MBUSA will notify owners, and dealers will inspect the coolant pump electrical line for damage, repairing it and rerouting it as necessary, free of charge. The recall began November 1, 2019. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2019090019.
NHTSA's own wording · initiated by MFR
Vehicles covered
| Model | Model years |
|---|---|
| Mercedes-Benz CLS 450 | 2019 |
Components: ELECTRICAL SYSTEM:WIRING | ENGINE AND ENGINE COOLING:COOLING SYSTEM
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 CLS 450 | 2019 | 15 | 12 |
Other electrical system recalls in 2019
88 of the 880 recall campaigns reported to NHTSA in 2019 concerned the electrical system; Mercedes-Benz USA, LLC. filed 199 campaigns in all.
| 19V922000 27 Dec 2019 | Autocar, LLC |
| 19V888000 12 Dec 2019 | General Motors LLC |
| 19V883000 11 Dec 2019 | BMW of North America, LLC |
| 19V876000 11 Dec 2019 | Toyota Motor Engineering & Manufacturing |
| 19V882000 11 Dec 2019 | Indian Motorcycle Company |
| 19V881000 11 Dec 2019 | Polaris Inc. |
| 19V871000 9 Dec 2019 | Proterra Inc. |
| 19V861000 4 Dec 2019 | REV Recreation Group |
NHTSA recalls (public domain) · all recalls of 2019