Three problems related to brake master cylinder have been reported for the 2006 BMW X5. The most recently reported issues are listed below.
Tl the contact owns a 2006 BMW X5. The contact stated while driving 30 mph, the brake pedal was depressed however, the vehicle failed to respond properly. The contact stated there was no warning light illuminated. The vehicle was taken to richmond BMW (8710 w broad st, richmond, va 23294) to be diagnosed. The contact was informed that the brakes needed to be replaced. The brake master cylinder and the brake booster were replaced. The contact related the failure to NHTSA campaign number: 10v446000 (service brakes, hydraulic) however, the VIN was not included. The manufacturer was not informed of the failure. The failure mileage was approximately 214,000.
I purchased a 2006 X5 4. 4i (n62b44 engine)used with 138,000 miles. Went to leave driveway, car was in reverse, presses brakes to adjust mirrors, let off to keep backing out, had to press again for another adjustment, I looked up and I was driving through the bushes in my front yard. Brakes were pushed but not engaging. I thought that to be odd, so I wanted to run to a certified BMW repair facility. I was in traffic going about 40 and had to utilize the breaks again, the car stopped. Within one minute I had to press again and the car would not stop, I pumped the breaks and the pedal was so hard there was no give. I plowed through a red light almost causing a several car pile up, and was finally able to get the vehicle to stop. At the repair shop, I was told the vacuum pump was leaking oil everywhere because it was busted, the oil was backing up into the master cylinder and had mixed with the break fluid and the break booster was bad. I am having to pay 2400 for the service when it was just purchased 3 days ago. There were no warning lights on at time of purchase which would have kept me from purchasing with cash. There are still no warning lights although I have taken down several bushes because the X5 would not stop and almost caused a head on collision because the X5 would not stop again. The 2007 X5 has been recalled to the exact same issue with the exact same diagnosis and symptoms, the 5 series from that year was also recalled. Just not the X5 due to an obvious oversite. This is a very dangerous vehicle when it is operated without being repaired. The vacuum pump, break booster and master cylinder are all part of the recall, which is exactly what a BMW certified mechanic stated needed to be replaced on mine. I.
Brake booster and master cylinder failed in June. Not covered under recall since a recall had not been issued for the 2006 models. Shortly thereafter the water pump began leaking coolant. Again, not covered for 2006 models. Now there is a severe leak in the power steering pump. All should be recalled. Already spent over $4k in repairs for a vehicle that, given its price and claims of extraordinary german engineering, should not have been necessary. Very disappointed.