Nine problems related to engine exhaust system have been reported for the 2011 BMW X5. The most recently reported issues are listed below.
Vehicle's engine, being a diesel, requires nox trap system and scr systems in order to reduce harmful emissions per epa standards. In order for the scr system to work properly, the engine must inject def (diesel-exhaust fluid) into the scr system. In the BMW X5 35d, the def system is comprised of two tanks: the active tank and the passive tank. A common problem with this system is the primary sensor of the passive tank failing. The sensor itself fails, but the entire tank has to be replaced as a result of the sensor's issues, resulting in several thousands of dollars being spent due to the sensor itself not being able to be replaced in the original tank. Recall is recommended for BMW to replace these sensors as the failure of these sensors results in the scr catalyst system failing to operate, which in turn significantly decreases engine performance, increases exhaust emissions, and results in the engine not knowing the capacity on which to operate. This can be dangerous.
Vanos bolts on exhaust cam sheared off while driving at hwy speeds resulting in engine malfunction, reduced power to a no start condition. The recall for this exact bolt issue was done at 86k miles, and now 70k miles later the issue occured anyway. BMW will not cover as the replaced part only had a 2 year warranty.
Oil was changed and shortly after the engine lost power. Then displayed an engine light. Took to BMW and stated the fault was for exhaust camshaft stuck and this error was due to the timing/vanos system. The camshaft solenoids had no visible damage and where cleaned. They stated further research needed to be done which would be over $1000+.
After having the oil changed and driving for several miles, the vehicle lost power. It had a code which was diagnosed as the exhaust camshaft stuck, this was an error due to the timing/vanos system. There was no visual damage to the camshaft solenoids but were cleaned yet still having issues. Are other consumers having this type of issue?.
After having that oil change the check engine went on the engine power reduced turning the whole car off during driving over 45 miles. BMW found error code which showed exhaust camshaft stuck, this is an error due to timing/vanes. After cleaning the camshaft solenoid and no visible damage present they stated further research would need to be conducted. Cost would be over 1000. 00. Are other consumers having issues with the vanos system?.
Intake and exhaust valve seals went bad. Which this is a known problem for n63 engines. BMW has a bulletin for it, but the extended warranty will not honor that because it's a known problem. And BMW won't honor it cause they won't do a recall on it either. When this happens, it consumes oil and you have blue smoke going out your tailpipe. I've been going back and forth with extended warranty, BMW dealer, and BMW corporation. They want me to pay over $9000 to fix this, cause you have to pull the motor out. And this gonna get worse if you gonna keep driving it.
Vanos intanke and exhaust units need to be replaced, along with some other parts related to this. Car has been at the BMW center for almost 1 week. While I was driving down a busy road, the "engine malfunction, reduced power" error message came on. I also noticed, the car had turned off and I had not control over the power steering wheel or brakes. My main concern is this happening again, luckily I was not on the highway and had no one in front of me, otherwise it could have been much worse due to no power steering availability or brakes.
The contact owns a 2011 BMW X5. The contact stated that while driving at various speeds, exhaust fumes from the engine could be smelled while in the cabin. The contact also stated that the power assist on the brakes failed and that both failures recurred numerous times. The vehicle was taken to the dealer where it was confirmed that in order to remedy the brake failure, a valve would have to be replaced. The technician was unable to replicate the exhaust failure. The vehicle was not repaired. The manufacturer was contacted but offered no assistance. The failure mileage was 18,000 and the current mileage was 20,000.
The contact owns a 2011 BMW X5. The contact observed excessive rust and corrosion within the fuel tank, exhaust system and the attaching components. The vehicle was taken to an authorized dealer, who stated that the owner would be responsible for the repair expenses. The vehicle was not repaired. On a separate occasion, the contact stated that smoke emitted from underneath the hood while driving. The vehicle was maneuvered to the side of the road and stopped. The contact examined the vehicle and stated that there was a substantial amount of oil loss in the reservoir. The contact then added more oil accordingly. The vehicle was towed to an authorized dealer, who was unable to locate a failure. The manufacturer was not notified of the failure. The approximate failure mileage was 6,000.