Table 1 shows two common engine and engine cooling related problems of the 2013 Mercedes Benz GL550.
| Problem Category | Number of Problems |
|---|---|
| Engine Stall problems | |
| Check Engine Light On problems |
Tl the contact owns a 2013 mercedes-benz Gl550. While driving various speeds, the vehicle suddenly began to sputter, hesitate, and, on several occasions, the engine stalled. The vehicle was taken to the local dealer (mercedes-benz of orland park, 8430 w. 159th st, orland park, illinois) where it was diagnosed that the engine cylinder head was faulty and needed to be replaced. The vehicle was taken to an independent mechanic who indicated that the failure was not due to a faulty cylinder head; however, the spark plugs and spark plug wires needed to be replaced. The vehicle was repaired, but the failures continued. The independent mechanic later diagnosed that the number 5 cylinder was misfiring and the manufacturer issued a service bulletin that addressed the issue. The vehicle was then taken back to the dealer. The manufacturer was notified of the failure. The VIN was not available. The failure mileage was 50,000.
2013 mercedes rough running at idle, various faults stored for injector quantity compensation for cylinder balancing. Fault code p1cwf-85. The check engine light eventually came on. Upon further inspection and diagnosis found that both engine bank 1 and 2 camshaft position sensors were full of oil due to failed internal packing of sensor. Inspected injector connectors and had oil, O2 sensors connector had oil, power train control unit full of oil. If enough oil was to flow through the electrical wires to the control unit as such this instance or sensor may result in immediate catastrophic failure and vehicles ability to drive. If the vehicle is on the highway and stops working may endanger occupants. Also noted that the failed part is a Mercedes Benz service bulletin for previous males and models but this 2013 Gl550 is not included even though the same part number is used in the new cars as the previous vehicles with this Mercedes Benz acknowledged issue. Also noted that the body harness connect to the same engine control unit which controls the safety functions such as airbags, speedometer and other essential functions.