On certain vehicles, a check valve in the brake vacuum pump may leak a small amount of lubricating oil. Over time, this could result in contamination of the brake booster. Loss of brake power assist could occur which, in conjunction with traffic, road conditions, and driver's reactions, could increase the risk of a crash causing property damage and/or personal injury. Correction: Dealers will inspect and, if necessary, replace the brake booster and master cylinder. Additionally, the brake vacuum line (including the check valve) will be replaced to eliminate the possibility of oil reaching the brake booster.
On certain 745I and 745LI vehicles, due to a software error in the digital engine management control unit, a desynchronization of the valvetronic motors for engine banks 1 and 2 may occur causing a rough-running engine. If this happens, the check engine light will illuminate, and the message "engine malfunction, drive with moderation" will appear in the vehicle's instrument cluster message display area. In certain extreme cases, the engine could stall and the driver may not be able to restart it. Correction: Dealer will reprogram the digital engine management control unit.
On certain 745I and 745LI vehicles the electric fuel pump runs at a rotational speed that could result in reduced lubrication of its internal components. Over an extended period of time, wear-induced internal damage to the fuel pump could result in insufficient fuel supply to the engine when the fuel tank contains one-third or less of its maximum fuel capacity. If this were to occur, the engine could stall and not be restarted until more fuel was added to the fuel tank. This could occur even though the fuel gauge indicated that fuel still remained in the tank. Correction: Dealers will reprogram the fuel pump control system.