One problem related to gas recirculation valve (egr valve) has been reported for the 2001 BMW X5. The most recently reported issues are listed below.
The contact owns a 2001 BMW X5. While driving 55 mph in six degree weather, the vehicle suddenly began to lose power and the speed decreased. The contact pulled the vehicle over and noticed a lot of smoke coming out of the tail pipe. The vehicle was towed to the dealer and they stated that the failure was caused by an oil valve separator issue. The mechanic explained that the engine froze and shot out all of the oil from the vehicle. The contact attempted to have the failure covered by her aftermarket warranty, but they refused because it was not an internal engine failure; therefore, the manufacturer would have to assume responsibility. The dealer stated that they would replace the oil valve separator. The vehicle has not been repaired. Through research, she learned that numerous people with the same vehicle have experienced the failure and, after the repair is performed, the failure persists. She believes that this is a manufacturer defect. The current and failure mileages were 94,500.