One problem related to 12v/24v/48v battery has been reported for the 2006 BMW 525. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2006 BMW 525 based on all problems reported for the 2006 525.
The contact owns a 2006 BMW 525xi. The contact stated while driving 50 mph the contact smell odor of burning coming for the vehicle and the contact notice smoking coming from the trunk of the vehicle. The contact pulled over and notice that smoking was coming for the battery. The contact was able to stop the smoke. The vehicle would not restart, the vehicle was towed to the contact's home. The vehicle was not diagnosed. The vehicle was repaired. The manufacturer was not contacted. The failure mileage was 154,000.