The brand recognized by its blue and white roundel has informed the National Highway Traffic Safety Administration (NHTSA) about two separate recall actions.

The biggest recall affects 504,545 vehicles sold in the United States, including the following models: 2008-2012MY 1-Series coupe and convertible, 2007-20011MY 3-Series coupe, convertible, sedan and wagon, and 2009-2011MY Z4 roadster, over a battery cable fault.

This is what BMW told the NHTSA about the problem at hand:

“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.”

To fix this issue, BMW said dealers will replace the positive battery cable connector and secure it with an improved method, free of charge, with the recall to begin in March of 2013.

An additional 30,265 X5 SUVs manufactured from September 12, 2006, through March 18, 2010 and equipped with an 8-cylinder engine, are being also recalled in the U.S. for power brake failure.

According to BMW, “The brake vacuum pump may leak a small amount of lubricating oil into the hose. The contamination could result in a loss of power assist braking”.

BMW it plans to replace the brake vacuum line with one that contains a check valve, free of charge. The recall should begin before the end of the month.

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