The vehicle battery is connected to the fuse box via a heavy duty cable. It has been determined that the cable connection at the fuse box can degrade over time, resulting in increased electrical resistance. This increased resistance can cause the connection point to overheat and break, resulting in a loss of electrical power and causing the engine to stall, increasing the risk of a crash. Dealers will replace the positive battery cable connector and secure it with an improved method to correct this concern.
 
Recalls
Recalls are issued for cars with safety-related defects or problems
2008 BMW 328i
The Battery Cable Connection at the Fuse Block May Break
Electrical & Lights, February 7, 2013
Side Air Bag and Safety Belt Tensioner May Not Deploy
Body, Interior & Misc., September 16, 2009
RepairPal Expert Overview:
An incorrect crimp connector may have been installed on the side air bag and belt tensioner wiring. There may be insufficient contact in the wiring, creating high resistance. This condition may cause the side air bag and/or safety belt tensioner not to deploy if needed in a crash, which increases the risk of injury. Dealers will repair the vehicles free of charge. The recall began September 16, 2009.