NHTSA Complaint #11030853 — 2011 BMW X5 SAV

X5 XDRIVE 35I SAV; WHILE DRIVING UNDER NORMAL STREET AND HIGHWAY CONDITIONS, VEHICLE SPEED AND ENGINE RPM HAVE BECOME UNSTABLE. THIS CAUSES THE VEHICLE TO INCREASE AND DECREASE IT'S SPEED INTERMITTENTLY AND WITHOUT WARNING. THE VEHICLE IS NOT TRUSTWORTHY AS YOU MAY LOSE POWER, OR UNINTENTIONALLY ACCELERATE WHILE TRYING TO EXECUTE A DRIVING MANEUVER, CAUSING A DANGEROUS CONDITION. CHECK ENGINE WARNING LIGHT ILLUMINATES. VEHICLE WAS BROUGHT TO BMW DEALERSHIP (ZT MOTORS) FOR DIAGNOSTICS. SERVICE PERSONNEL STATED THAT THE HIGH PRESSURE FUEL PUMP INDICATED A LOW FUEL PRESSURE AT THE INLET. THIS WOULD TELL ME THAT THE LOW PRESSURE FUEL PUMP IS NOT DELIVERING THE CORRECT FUEL FLOW/PRESSURE TO THE HIGH PRESSURE FUEL PUMP. REF NHTSA CAMPAIGN # 16V746000 ET AL. DIAGNOSTICS ALSO INDICATED THE VALVETRONIC MOTOR SHOWS IT SHORT CIRCUITING. DEALER RECOMMENDED REPLACEMENT OF VALVETRONIC MOTOR, CAM SHAFT AND OIL INJECTORS. THE REPLACEMENT OF THE CAM SHAFT AND OIL INJECTORS ARE UNNECESSARY MAINTENANCE ITEMS, ONLY THE VALVETRONIC MOTOR WOULD NEED TO BE REPLACED, AND FUEL SYSTEM REPROGRAMMED. REF NHTSA CAMPAIGN # 14V176000 ET AL. RECOMMEND RECALL REPLACEMENT OF BOTH HIGH PRESSURE AND LOW PRESSURE FUEL PUMPS, VALVETRONIC MOTOR, VANOS CAM SHAFT AND OIL INJECTORS AS WELL AS REPROGRAMMING OF FUEL OPERATING SYSTEM. ALSO REPLACE CAM SHAFT MOUNTING BOLTS.