BMW issued a recall on the 3 SERIES7 SERIES,X5, and Z8 models

Certain passenger vehicles. The engine auxiliary/cooling fan operation, including variable speed, is electronically controlled. Failure of the fan motor can cause the electrical circuitry of the fan control unit to overload and fail, causing the fan to stop operating. If this were to occur, engine overheating and subsequent engine damage could result. In addition, it is possible for the failure of the electrical circuitry to cause a fire in the fan control unit located in the front of the engine compartment. Correction: Dealers will replace the fan.