general problems of the 2008 BMW 550

Vehicle abruptly shut off while reversing out of my driveway. Vehicle restarted after a long crank and appeared to enter a reduced power mode/limp mode with a transmission fault that locked the transmission in 4th gear. Reading obd2 codes revealed a code for the crankshaft position sensor. Inspection of the 3 terminal sensor revealed 2 of the terminal contacts on the sensor to be shorted out with melted plastic on both the sensor and the wiring connector plug. Shorted wire could be a result of a leaking coolant passage at rear of engine within bellhousing where sensor is located. Coolant intrusion into sensor connector resulted in electrical short and melted connections.

The contact owns a 2008 BMW. The contact stated that he was getting ready to drive the vehicle, however when he started the vehicle, the abs and check engine lights illuminated. The contact stated that he noticed the vehicle was overheating and turned the vehicle off. The contact heard an unusual sound which came from under the hood. The contact inspected and noticed that the coolant reservoir lid had detached and dented the hood due to the vehicle overheating. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was made aware of the failure and provided no assistance. The failure mileage was approximately 65,000.

The contact owns a 2008 BMW 535i. The contact stated that while traveling 30 mph, the engine temperature warning light illuminated. The contact was able to drive the vehicle to his residence. The vehicle was not taken to a mechanic. The vehicle was not repaired. The manufacturer was contacted about the issue. The failure and current mileages were 78,000.