The official notice
Defect
BMW is recalling certain model year 2011 1-Series ActiveE passenger vehicles manufactured August 17, 2011, through December 19, 2011. Due to an insufficient sealing of the drivetrain housing assembly there may be a lack of grease lubrication on the gear shaft that transfers power from the electric motor to the transmission.
Safety Risk
Over time, the connection between the electric motor and the transmission may wear, possibly resulting in a sudden loss of vehicle propulsion. This could increase the risk of a vehicle crash.
Remedy
BMW will notify owners by telephone, and dealers will inspect the drivetrain connection and update the sealing system. Any worn electric motor gearing will be replaced. The recall began on April 4, 2013. Owners may call BMW at 1-800-525-7417 or email BMW at CustomerRelations@bmwusa.com.