BMW is recalling 504,545 vehicles in the United States due to an electrical fault, according to the National Highway Traffic Safety Administration.
"The connector for the positive battery cable connector and the corresponding terminal on the fuse box may degrade over time. Over time, the high current flow and heat from electrical resistance may lead to a breakage of the connection, and a loss of electrical power to the vehicle. If there is a loss of electrical power to the vehicle, the vehicle may unexpectedly stall, increasing the risk of a crash," said NHTSA in its summary of the problem.
The affected vehicles include 2008-2012 1-Series coupes and convertibles (both 128i and 135i) manufactured December 2007 through July 2011; 2007-2011 3-Series coupes and convertibles (both 328i and 335i) manufactured March 2007 through July 2011; 2007-2011 3-Series sedans (both 328i and 335i) manufactured March 2007 through October 2011; 2007-2011 3-Series sports wagons (both 328i and 335i) manufactured March 2007 through June 2011; and 2009-2011 Z4 roadsters manufactured March 2009 through June 2011.
The recall is expected to begin in March 2013 and dealers will replace the positive battery cable connector and secure it with an improved method, free of charge. Owners can contact BMW at 1-800-525-7417 or NHTSA at 1-888-327-4236.