Complaint
Check engine light illuminated
Red coolant warning in instrument cluster
Fault codes U019F00 or U019F87 stored in PTCU (N127)
Cause
Electric coolant pump communication
Remedy
1-Check electric connections on electric coolant pump M75/11 for clean/tight installation. Repair as needed.
2-Update software of MED40 control unit.
3-Replace electric coolant pump M75/11 with part A2742004900.
