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Mercedes-Benz Recall 2019090019: Coolant Pump Electrical Line May Chafe
2019 Mercedes-Benz CLS450
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.
Electrical System — Wiring
Engine And Engine Cooling — Cooling System
- Summary
- 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.
- Actions
- 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.
- Documents (11)
- Recall Quarterly Report #1, 2019-4
- Manufacturer Notices(to Dealers,etc) - Recall Campaign Initial Notification Wiring Harness for Electric Coolant Pump MY19 CLS-Class (257 Platform)
- Defect Notice 573 Report
- Recall Acknowledgement
- Chronology
- Recall 573 Report - Amendment 1
- ISSUED Owner Notification Letter(Part 577)
- Manufacturer Notices(to Dealers,etc) - Dealer Notification re Recall Campaign Launch Notification Wiring Harness for Electric Coolant Pump MY19 CLS-Class (257 Platform) dated 10-18-19.
- ISSUED Interim Owner Notification Letter(Part 577)
- Recall 573 Report - Amendment 2
- Remedy Instructions and TSB
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