Two problems related to check engine light on have been reported for the 2009 BMW X5. The most recently reported issues are listed below.
Diesel X5 has a faulty passive def tank which illuminates the check engine light and does not provide def fluid to the emissions control system. BMW will not pay for repairs and could not provide replacement part for the last 6 months due to sensor redesign. Vehicle emitting toxic emissions for 6 months. Could be thousands of vehicles affected. Health safety condition.
The contact owns a 2009 BMW X5. The contact stated that while driving at approximately 55-65 mph, the vehicle would suddenly decelerate to about 25 mph. The vehicle would then completely shut down with no power steering or power brakes. After the failure, the check engine light would illuminate. The contact pulled the emergency brake and the vehicle was towed to an authorized dealership. The dealer stated that they made repairs to the computer. The contact experienced the same failure the day after receiving the vehicle from the dealer. The vehicle was being repaired at the time of the complaint. The contact called the manufacturer who stated that they would investigate but had not corresponded with the contact since. The VIN was unavailable when the complaint was filed. The current mileage was approximately 15,000. The failure mileage was approximately 14,000.