Mercedes-Benz CLS 450: Electrical system — wiring

Affects Mercedes-Benz CLS 450 · 2019 — about 3K vehicles.

The hazard

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.

What to do

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.

Critical — crash/injury risk now High — injury risk; see remedy Moderate — fix at next service Low — minor / informational