IllustrationDEFECTIVE TIMING CHAIN AND TENSIONERS CAUSING ADDITIONAL DAMAGE TO THE EXHAUST VALVES PREVENTING COMPRESSION IN THE ENGINE AS IS DESCRIBED IN ONE OF MANY CLASS ACTION SUITS.
2009 Mini Cooper S
Owner reports · Recalls · Investigations
More warning signs than most Cooper S years
Owner complaints for the 2009 Mini Cooper S are substantially higher than the model-year median of 23.5.
About this comparison →How this year compares
Owner complaints by model year
Compare all Cooper S years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
90–25K
3825–50K
3250–75K
1875–100K
8100–150K
2150K+
107 reports with mileage · 12 unknown
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Engine. Review the 65 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Air Bags. Review the 17 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Power Train. Review the 16 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
2 crash reports4 fire reports1 injury reports
What owners actually said
119 reportsPASSENGER SEAT OCCUPANCY SENSOR MALFUNCTION. AIRBAG ERROR LIGHTS ON DASH AND INTERMITTENT DISABLING THE AIRBAG WHEN PERSON IS SITTING IN PASSENGER SEAT WHILE DRIVING. THE SEAT SENSOR CAUSES THE AIRBAG TO DEPLOY DEPENDENT ON IF THERE IS SOMEONE SITTING IN SEAT. THIS COULD CAUSE NON DEPLOYMENT OF AIRBAG IN AN ACCIDENT WHEN A PA…
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PASSENGER SEAT OCCUPANCY SENSOR MALFUNCTION. AIRBAG ERROR LIGHTS ON DASH AND INTERMITTENT DISABLING THE AIRBAG WHEN PERSON IS SITTING IN PASSENGER SEAT WHILE DRIVING. THE SEAT SENSOR CAUSES THE AIRBAG TO DEPLOY DEPENDENT ON IF THERE IS SOMEONE SITTING IN SEAT. THIS COULD CAUSE NON DEPLOYMENT OF AIRBAG IN AN ACCIDENT WHEN A PASSENGER IS IN THE SEAT.
TIMING CHAIN BROKE WELL BEFORE 10 YEAR OR 100000 MILES. THIS TIMING CHAIN BREAKAGE CAUSED MY ENGINE TO FAIL DUE TO PISTON DAMAGE OR CYLINDER DAMAGE. MY ENGINE NOW NEEDS TO BE REPLACED. MY VEHICLE WAS MOVING WHEN THE SOUND OCCURRED. WHEN I RESEARCHED THIS SOUND, I LEARNED IT MAY BE THE TIMING CHAIN AND TOOK IT TO THE GARAGE …
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TIMING CHAIN BROKE WELL BEFORE 10 YEAR OR 100000 MILES. THIS TIMING CHAIN BREAKAGE CAUSED MY ENGINE TO FAIL DUE TO PISTON DAMAGE OR CYLINDER DAMAGE. MY ENGINE NOW NEEDS TO BE REPLACED. MY VEHICLE WAS MOVING WHEN THE SOUND OCCURRED. WHEN I RESEARCHED THIS SOUND, I LEARNED IT MAY BE THE TIMING CHAIN AND TOOK IT TO THE GARAGE TO BE REPLACED. THE GARAGE REPLACED THE TIMING CHAIN AND WHEN THEY TOOK IT FOR A TEST DRIVE, IT DIDN'T SEEM TO BE RUNNING RIGHT AND AFTER FURTHER INSPECTION IT WAS DETERMINED THAT THE ENGINE WAS RUINED AND NEEDED TO BE REPLACED.
PASSENGER SIDE AIRBAG LIGHT ON. HAS BEEN ON FOR MONTHS
MY AIRBAG LIGHT/SEAT SENSOR WARNING LIGHT CAME ON BOTH CENTER CONSOLE AND DRIVER'S CONSOLE FOR NO APPARENT REASON. BOTH LIGHTS STAY ILLUMINATED. PROPER OPERATION OF SEAT SENSOR IN PASSENGER SEAT MAT WHICH ACTIVATES PASSENGER SIDE AIRBAG IS NOW IN QUESTION.
TL* THE CONTACT OWNS A 2009 MINI COOPER S. THE CONTACT STATED THAT WHILE DRIVING AT APPROXIMATELY 40 MPH, THE VEHICLE FAILED TO ACCELERATE WHEN THE ACCELERATOR PEDAL WAS DEPRESSED AND BEGAN TO JERK. IN ADDITION, A LOUD KNOCKING SOUND WAS HEARD FROM THE HOOD OF THE VEHICLE WHEN DRIVEN AND OILS LEAKS WERE DISCOVERED WHEN PARKED. T…
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TL* THE CONTACT OWNS A 2009 MINI COOPER S. THE CONTACT STATED THAT WHILE DRIVING AT APPROXIMATELY 40 MPH, THE VEHICLE FAILED TO ACCELERATE WHEN THE ACCELERATOR PEDAL WAS DEPRESSED AND BEGAN TO JERK. IN ADDITION, A LOUD KNOCKING SOUND WAS HEARD FROM THE HOOD OF THE VEHICLE WHEN DRIVEN AND OILS LEAKS WERE DISCOVERED WHEN PARKED. THE FAILURE OCCURRED CONSTANTLY. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 44,000.
THE PASSENGER SEAT BELT SENSOR LIGHT STAY ON CONTINUOUSLY CAR IS STARTED, REGARDLESS ANYONE IN THE SEAT. THIS IS A SAFETY ISSUE AND SHOULD BE RECALLED BY MANUFACTURE.
SINCE I GET MY UNTIL NOW I REPAIR TWO TIMES . THE FIRST TIME I WAS CHANGE THE PART OF THE TOP OF THE MOTOR I DON'T REMEMBER THE NAME. BUT THIS ONE THAT IS THE MOST STRAGE I WAS DRIVING AND IN THE MIDDLE OF THE ROAD THE MOTOR STOP INTANLY. THE MOST STRANGE IS 10 MINUTES AFTER DRIVE THE CAR ALL THIS HAPPEN SO THAT MEAN IS NO SA…
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SINCE I GET MY UNTIL NOW I REPAIR TWO TIMES . THE FIRST TIME I WAS CHANGE THE PART OF THE TOP OF THE MOTOR I DON'T REMEMBER THE NAME. BUT THIS ONE THAT IS THE MOST STRAGE I WAS DRIVING AND IN THE MIDDLE OF THE ROAD THE MOTOR STOP INTANLY. THE MOST STRANGE IS 10 MINUTES AFTER DRIVE THE CAR ALL THIS HAPPEN SO THAT MEAN IS NO SAFE. AND NOW WHAT I HAVE TO DO....
PASSENGER SEAT AIRBAG DISABLED LIGHT REMAINS ON EVEN WHEN SEAT IS OCCUPIED. MECHANIC RAN DIAGNOSTIC AND FOUND CODE FOR PASSENGER SEAT OCCUPANCY SENSOR. CALLED MINI AND WAS TOLD THAT THEY WILL NOT REPAIR SINCE MODEL YEAR 2009 IS NOT INCLUDED IN THE CURRENT RECALL.
THE PROBLEM OCCURRED WHEN THE TENSIONER FOR THE TIMING CHAIN NO LONGER APPLIED PRESSURE TO THE GUIDE RAIL. THIS CAUSES THE TIMING CHAIN TO FLAP AGAINST THE THE GUIDE RAILS EVENTUALLY BREAKING THEM. THERE WAS A NOISE THAT WAS CREATED HEARD DURING COLD START UP AND EVENTUALLY WENT AWAY WHEN THE ENGINE GOT WARM. THE ITEMS REPAI…
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THE PROBLEM OCCURRED WHEN THE TENSIONER FOR THE TIMING CHAIN NO LONGER APPLIED PRESSURE TO THE GUIDE RAIL. THIS CAUSES THE TIMING CHAIN TO FLAP AGAINST THE THE GUIDE RAILS EVENTUALLY BREAKING THEM. THERE WAS A NOISE THAT WAS CREATED HEARD DURING COLD START UP AND EVENTUALLY WENT AWAY WHEN THE ENGINE GOT WARM. THE ITEMS REPAIRED WERE A FAULTY CHAIN TENSIONER, TIMING CHAIN, CHAIN GUIDE RAIL, BEARING BOLT, BEARING BOLT GASKET, CRANK SHAFT SPROCKET, CRANKSHAFT PULLEY BOLT, VALVE COVER GASKET, PERMATEX HYLOMAR GASKET MAKER, SERPETINE BELT, SOLENOID, AND VANOS. THIS ISSUE APPEARED WELL BEFORE BMWS SUGGESTED MAINTENANCE PERIOD OF 120,000 MILES, OR 10 YEARS.
Official recalls
323V337000 · Electrical System
May 11, 2023
BMW of North America, LLC (BMW) is recalling certain 2008-2014 MINI Clubman Cooper, Clubman Cooper S, Clubman John Cooper Works, and 2007-2013 MINI Hardtop 2-Door Cooper, Cooper S, and John Cooper Works vehicles sold, or ever registered, in Alaska, Colorado, Connecticut, Delaware, Illinois, Indiana, Iowa, Kansas, Kentucky, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, Nebraska, New Hampshire, New Jersey, New York, North Dakota, Ohio, Pennsylvania, Rhode Island, South Dakota, Utah, Vermont, Virginia, West Virginia, Washington D.C., and Wisconsin. The electronic control module in the driver's side footwell area may short-circuit, due to corrosion from water and road salt.
Consequence & remedy
Consequence: An electrical short-circuit can increase the risk of a fire.
Remedy: Dealers will inspect the sunroof drains, interior footwell area, and FRM and, depending upon the results of the inspection, certain components will be replaced. Owner notification letters were mailed May 13, 2024. Owners may contact BMW customer service at 1-866-825-1525.
18V248000 · Engine And Engine Cooling:engine; Engine And Engine Cooling:engine:gasoline:turbo/supercharger
Apr 18, 2018
BMW of North America, LLC (BMW) is recalling certain 2011-2012 BMW 550i, 550i xDrive, 550i Gran Turismo, 550i Gran Turismo xDrive, 750i, 750Li, 750i xDrive, 750Li xDrive, 760Li, X5 xDrive50i, X5 M, X6 xDrive50i, X6 M, ActiveHybrid7, MINI Cooper S Convertible, John Cooper Works (JCW) Convertible, Cooper S Countryman, Cooper S Countryman ALL4, Cooper S, JCW, Cooper S Clubman, JCW Clubman, Cooper S Roadster, JCW Roadster, Cooper S Coupe, JCW Coupe and Rolls-Royce Ghost, 2011 BMW X6 Hybrid and 2012 BMW 650i Coupe, 650i xDrive Coupe, 650i Convertible and 650i xDrive Convertible vehicles. The electric auxiliary water pump may fail and cause the circuit board to overheat.
Consequence & remedy
Consequence: If the circuit board were to overheat, it can increase the risk of a fire.
Remedy: BMW will notify owners, and dealers will replace the electric auxiliary water pump, free of charge. Depending on the model, there are currently limited parts available, however not all parts are available at this time. Owners will be notified of the recall beginning June 11, 2018, and will receive a second notification when remedy parts become available. Owners may contact BMW customer service at BMW 1-800-525-7417, MINI at 1-866-825-1525, or Rolls-Royce at 1-877-877-3735. Note: BMW recommends that owners park their vehicle outdoors until the recall remedy has been performed.
Additional source detail variants (2)
Engine And Engine Cooling:engine:gasoline:turbo/supercharger
BMW of North America, LLC (BMW) is recalling certain 2011-2012 BMW 550i, 550i xDrive, 550i Gran Turismo, 550i Gran Turismo xDrive, 750i, 750Li, 750i xDrive, 750Li xDrive, 760Li, X5 xDrive50i, X5 M, X6 xDrive50i, X6 M, ActiveHybrid7, MINI Cooper S Convertible, John Cooper Works (JCW) Convertible, Cooper S Countryman, Cooper S Countryman ALL4, Cooper S, JCW, Cooper S Clubman, JCW Clubman, Cooper S Roadster, JCW Roadster, Cooper S Coupe, JCW Coupe and Rolls-Royce Ghost, 2011 BMW X6 Hybrid and 2012 BMW 650i Coupe, 650i xDrive Coupe, 650i Convertible and 650i xDrive Convertible vehicles. The electric auxiliary water pump may fail and cause the circuit board to overheat.
Consequence: If the circuit board were to overheat, it can increase the risk of a fire.
Remedy: BMW will notify owners, and dealers will replace the electric auxiliary water pump, free of charge. Depending on the model, there are currently limited parts available, however not all parts are available at this time. Owners will be notified of the recall beginning June 11, 2018, and will receive a second notification when remedy parts become available. Owners may contact BMW customer service at BMW 1-800-525-7417, MINI at 1-866-825-1525, or Rolls-Royce at 1-877-877-3735. Note: BMW recommends that owners park their vehicle outdoors until the recall remedy has been performed.
Engine And Engine Cooling:engine
BMW of North America, LLC (BMW) is recalling certain 2011-2012 BMW 550i, 550i xDrive, 550i Gran Turismo, 550i Gran Turismo xDrive, 750i, 750Li, 750i xDrive, 750Li xDrive, 760Li, X5 xDrive50i, X5 M, X6 xDrive50i, X6 M, ActiveHybrid7, MINI Cooper S Convertible, John Cooper Works (JCW) Convertible, Cooper S Countryman, Cooper S Countryman ALL4, Cooper S, JCW, Cooper S Clubman, JCW Clubman, Cooper S Roadster, JCW Roadster, Cooper S Coupe, JCW Coupe and Rolls-Royce Ghost, 2011 BMW X6 Hybrid and 2012 BMW 650i Coupe, 650i xDrive Coupe, 650i Convertible and 650i xDrive Convertible vehicles. The electric auxiliary water pump may fail and cause the circuit board to overheat.
Consequence: If the circuit board were to overheat, it can increase the risk of a fire.
Remedy: BMW will notify owners, and dealers will replace the electric auxiliary water pump, free of charge. Depending on the model, there are currently limited parts available, however not all parts are available at this time. Owners will be notified of the recall beginning June 11, 2018, and will receive a second notification when remedy parts become available. Owners may contact BMW customer service at BMW 1-800-525-7417, MINI at 1-866-825-1525, or Rolls-Royce at 1-877-877-3735. Note: BMW recommends that owners park their vehicle outdoors until the recall remedy has been performed.
12V008000 · Engine And Engine Cooling:engine:gasoline:turbo/supercharger
Jan 11, 2012
BMW IS RECALLING CERTAIN MODEL YEAR 2007-2011 MINI COOPER S, 2008-2011 MINI COOPER S CLUBMAN, 2009-2011 MINI COOPER S CONVERTIBLE, 2009-2011 MINI COOPER JCW, 2009-2011 MINI COOPER JCW CLUBMAN, 2009-2011 COOPER JCW CONVERTIBLE, AND 2011 COOPER S COUNTRYMAN PASSENGER CARS MANUFACTURED FROM NOVEMBER 14, 2006, THROUGH JANUARY 18, 2011. THE ELECTRIC AUXILIARY WATER PUMP THAT COOLS THE TURBOCHARGER HAS AN ELECTRONIC CIRCUIT BOARD THAT CAN MALFUNCTION AND OVERHEAT.
Consequence & remedy
Consequence: THE CIRCUIT BOARD MAY SMOLDER WHICH COULD RESULT IN A VEHICLE FIRE.
Remedy: BMW WILL NOTIFY OWNERS, AND DEALERS WILL REPLACE THE WATER PUMP FREE OF CHARGE. THE SAFETY RECALL BEGANDURING FEBRUARY 2012. OWNERS MAY CONTACT BMW AT 1-866-275-6464.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
1PE11036 · Engine Compartment Fire
Opened Oct 11, 2011 · Closed Jun 11, 2012
Status: closed (inferred from source dates) · Engine And Engine Cooling
In a January 10, 2012 letter to NHTSA, BMW of North America, LLC. (BMW) submitted a Defect Information Report (DIR) identifying a defect in the electric auxiliary water pump in approximately 88,911 model year (MY) 2007-2011 Mini Cooper vehicles manufactured from November 14, 2006 through January 18, 2011 (Recall 12V-008).According to BMW, the auxiliary water pump on vehicles equipped with 4-cylinder turbocharged engines may overheat.Electro-migration can cause the pump electronic circuit board to overheat resulting in smoldering of the water pump. If smoldering occurs, it may lead to an engine compartment or vehicle fire.The pump supplier, Pierburg Pump Technology GmbH, redesigned the pump to address factors that may contribute to circuit board overheating.The redesigned pumps were completely implemented in production vehicles by January 2011.Recall 12V-008 was the third recall initiated by BMW to address electric auxiliary water pump fires in vehicles equipped with Pierburg pumps.In two October 20, 2011 letters to NHTSA, BMW submitted DIRs for similar auxiliary water pump defect conditions in approximately 32,084 MY 2008-2011 BMW 5-Series, 7-Series, X5 and X6 models equipped with 8- and 12-cylinder engines and manufactured from May 2008 through December 2010 (Recall 11V-521); and for approximately 589 MY 2010 Rolls-Royce Ghost vehicles manufactured from September 2009 through September 2010 (Recall 11V-522).In three separate April 5, 2012 letters to NHTSA, BMW submitted amendments to Recalls 11V-521, 11V-522 and 12V-008.The amendments all described a common defect condition related to a manufacturing process deviation in a certain production range of the redesigned Pierburg water pumps that could result in cracks in the pump housing, which may allow coolant to enter and contact the pump?s circuit board.BMW indicated that further analysis identified a specific machine process error at the sub-supplier that manufactures the water pump housing.Pump housing cracks may cause the circuit board to overheat and lead to smoldering of the water pump.Recall 12V-008 was, thus, amended to include approximately 1,457 MY 2011 Mini Cooper vehicles manufactured from March 31, 2011 through April 22, 2011, when pumps manufactured with the suspect manufacturing process may have been used in vehicle assembly.The amendment to Recall 11V-521 was assigned a new recall number, Recall 12V-161, and covered approximately 2,846 MY 2011-2012 BMW 5-Series, 6-Series, 7-Series, X5, and X6 vehicles manufactured from April 1, 2011 through August 1, 2011.The amendment to Recall 11V-522 was assigned a new recall number, Recall 12V-166, and covered approximately 69 MY 2011 Rolls-Royce Ghost vehicles manufactured from April 7, 2011 through June 2, 2011.The Office of Defects Investigation (ODI) analyzed complaint data provided by BMW as well as complaints submitted to ODI from consumers. In total, there were 30 unique Mini Cooper reports indicating engine fire.In addition, BMW provided warranty data showing 493 claims for replacement of the subject component on Mini Cooper vehicles.Owners of the recalled vehicles are notified to take their vehicle to a BMW dealer, who will replace the auxiliary water pump to prevent any incidents related to this issue.This preliminary evaluation is closed.The ODI reports cited above can be viewed at www-odi.nhtsa.dot.gov/owners/SearchNHTSAID under the following identification numbers (ODI Nos.):10286597, 10286663, 10289793, 10310677, 10314796, 10342365, 10394808, 10394192, 10403982, 10418325, 10422646, 10429003.
Additional source detail variants (3)
Engine And Engine Cooling
In a January 10, 2012 letter to NHTSA, BMW of North America, LLC. (BMW) submitted a Defect Information Report (DIR) identifying a defect in the electric auxiliary water pump in approximately 88,911 model year (MY) 2007-2011 Mini Cooper vehicles manufactured from November 14, 2006 through January 18, 2011 (Recall 12V-008).According to BMW, the auxiliary water pump on vehicles equipped with 4-cylinder turbocharged engines may overheat.Electro-migration can cause the pump electronic circuit board to overheat resulting in smoldering of the water pump. If smoldering occurs, it may lead to an engine compartment or vehicle fire.The pump supplier, Pierburg Pump Technology GmbH, redesigned the pump to address factors that may contribute to circuit board overheating.The redesigned pumps were completely implemented in production vehicles by January 2011.Recall 12V-008 was the third recall initiated by BMW to address electric auxiliary water pump fires in vehicles equipped with Pierburg pumps.In two October 20, 2011 letters to NHTSA, BMW submitted DIRs for similar auxiliary water pump defect conditions in approximately 32,084 MY 2008-2011 BMW 5-Series, 7-Series, X5 and X6 models equipped with 8- and 12-cylinder engines and manufactured from May 2008 through December 2010 (Recall 11V-521); and for approximately 589 MY 2010 Rolls-Royce Ghost vehicles manufactured from September 2009 through September 2010 (Recall 11V-522).In three separate April 5, 2012 letters to NHTSA, BMW submitted amendments to Recalls 11V-521, 11V-522 and 12V-008.The amendments all described a common defect condition related to a manufacturing process deviation in a certain production range of the redesigned Pierburg water pumps that could result in cracks in the pump housing, which may allow coolant to enter and contact the pump?s circuit board.BMW indicated that further analysis identified a specific machine process error at the sub-supplier that manufactures the water pump housing.Pump housing cracks may cause the circuit board to overheat and lead to smoldering of the water pump.Recall 12V-008 was, thus, amended to include approximately 1,457 MY 2011 Mini Cooper vehicles manufactured from March 31, 2011 through April 22, 2011, when pumps manufactured with the suspect manufacturing process may have been used in vehicle assembly.The amendment to Recall 11V-521 was assigned a new recall number, Recall 12V-161, and covered approximately 2,846 MY 2011-2012 BMW 5-Series, 6-Series, 7-Series, X5, and X6 vehicles manufactured from April 1, 2011 through August 1, 2011.The amendment to Recall 11V-522 was assigned a new recall number, Recall 12V-166, and covered approximately 69 MY 2011 Rolls-Royce Ghost vehicles manufactured from April 7, 2011 through June 2, 2011.The Office of Defects Investigation (ODI) analyzed complaint data provided by BMW as well as complaints submitted to ODI from consumers. In total, there were 30 unique Mini Cooper reports indicating engine fire.In addition, BMW provided warranty data showing 493 claims for replacement of the subject component on Mini Cooper vehicles.Owners of the recalled vehicles are notified to take their vehicle to a BMW dealer, who will replace the auxiliary water pump to prevent any incidents related to this issue.This preliminary evaluation is closed.The ODI reports cited above can be viewed at www-odi.nhtsa.dot.gov/owners/SearchNHTSAID under the following identification numbers (ODI Nos.):10286597, 10286663, 10289793, 10310677, 10314796, 10342365, 10394808, 10394192, 10403982, 10418325, 10422646, 10429003.
Engine And Engine Cooling
In a January 10, 2012 letter to NHTSA, BMW of North America, LLC. (BMW) submitted a Defect Information Report (DIR) identifying a defect in the electric auxiliary water pump in approximately 88,911 model year (MY) 2007-2011 Mini Cooper vehicles manufactured from November 14, 2006 through January 18, 2011 (Recall 12V-008).According to BMW, the auxiliary water pump on vehicles equipped with 4-cylinder turbocharged engines may overheat.Electro-migration can cause the pump electronic circuit board to overheat resulting in smoldering of the water pump. If smoldering occurs, it may lead to an engine compartment or vehicle fire.The pump supplier, Pierburg Pump Technology GmbH, redesigned the pump to address factors that may contribute to circuit board overheating.The redesigned pumps were completely implemented in production vehicles by January 2011.Recall 12V-008 was the third recall initiated by BMW to address electric auxiliary water pump fires in vehicles equipped with Pierburg pumps.In two October 20, 2011 letters to NHTSA, BMW submitted DIRs for similar auxiliary water pump defect conditions in approximately 32,084 MY 2008-2011 BMW 5-Series, 7-Series, X5 and X6 models equipped with 8- and 12-cylinder engines and manufactured from May 2008 through December 2010 (Recall 11V-521); and for approximately 589 MY 2010 Rolls-Royce Ghost vehicles manufactured from September 2009 through September 2010 (Recall 11V-522).In three separate April 5, 2012 letters to NHTSA, BMW submitted amendments to Recalls 11V-521, 11V-522 and 12V-008.The amendments all described a common defect condition related to a manufacturing process deviation in a certain production range of the redesigned Pierburg water pumps that could result in cracks in the pump housing, which may allow coolant to enter and contact the pump?s circuit board.BMW indicated that further analysis identified a specific machine process error at the sub-supplier that manufactures the water pump housing.Pump housing cracks may cause the circuit board to overheat and lead to smoldering of the water pump.Recall 12V-008 was, thus, amended to include approximately 1,457 MY 2011 Mini Cooper vehicles manufactured from March 31, 2011 through April 22, 2011, when pumps manufactured with the suspect manufacturing process may have been used in vehicle assembly.The amendment to Recall 11V-521 was assigned a new recall number, Recall 12V-161, and covered approximately 2,846 MY 2011-2012 BMW 5-Series, 6-Series, 7-Series, X5, and X6 vehicles manufactured from April 1, 2011 through August 1, 2011.The amendment to Recall 11V-522 was assigned a new recall number, Recall 12V-166, and covered approximately 69 MY 2011 Rolls-Royce Ghost vehicles manufactured from April 7, 2011 through June 2, 2011.The Office of Defects Investigation (ODI) analyzed complaint data provided by BMW as well as complaints submitted to ODI from consumers. In total, there were 30 unique Mini Cooper reports indicating engine fire.In addition, BMW provided warranty data showing 493 claims for replacement of the subject component on Mini Cooper vehicles.Owners of the recalled vehicles are notified to take their vehicle to a BMW dealer, who will replace the auxiliary water pump to prevent any incidents related to this issue.This preliminary evaluation is closed.The ODI reports cited above can be viewed at www-odi.nhtsa.dot.gov/owners/SearchNHTSAID under the following identification numbers (ODI Nos.):10286597, 10286663, 10289793, 10310677, 10314796, 10342365, 10394808, 10394192, 10403982, 10418325, 10422646, 10429003.
Engine And Engine Cooling
In a January 10, 2012 letter to NHTSA, BMW of North America, LLC. (BMW) submitted a Defect Information Report (DIR) identifying a defect in the electric auxiliary water pump in approximately 88,911 model year (MY) 2007-2011 Mini Cooper vehicles manufactured from November 14, 2006 through January 18, 2011 (Recall 12V-008).According to BMW, the auxiliary water pump on vehicles equipped with 4-cylinder turbocharged engines may overheat.Electro-migration can cause the pump electronic circuit board to overheat resulting in smoldering of the water pump. If smoldering occurs, it may lead to an engine compartment or vehicle fire.The pump supplier, Pierburg Pump Technology GmbH, redesigned the pump to address factors that may contribute to circuit board overheating.The redesigned pumps were completely implemented in production vehicles by January 2011.Recall 12V-008 was the third recall initiated by BMW to address electric auxiliary water pump fires in vehicles equipped with Pierburg pumps.In two October 20, 2011 letters to NHTSA, BMW submitted DIRs for similar auxiliary water pump defect conditions in approximately 32,084 MY 2008-2011 BMW 5-Series, 7-Series, X5 and X6 models equipped with 8- and 12-cylinder engines and manufactured from May 2008 through December 2010 (Recall 11V-521); and for approximately 589 MY 2010 Rolls-Royce Ghost vehicles manufactured from September 2009 through September 2010 (Recall 11V-522).In three separate April 5, 2012 letters to NHTSA, BMW submitted amendments to Recalls 11V-521, 11V-522 and 12V-008.The amendments all described a common defect condition related to a manufacturing process deviation in a certain production range of the redesigned Pierburg water pumps that could result in cracks in the pump housing, which may allow coolant to enter and contact the pump?s circuit board.BMW indicated that further analysis identified a specific machine process error at the sub-supplier that manufactures the water pump housing.Pump housing cracks may cause the circuit board to overheat and lead to smoldering of the water pump.Recall 12V-008 was, thus, amended to include approximately 1,457 MY 2011 Mini Cooper vehicles manufactured from March 31, 2011 through April 22, 2011, when pumps manufactured with the suspect manufacturing process may have been used in vehicle assembly.The amendment to Recall 11V-521 was assigned a new recall number, Recall 12V-161, and covered approximately 2,846 MY 2011-2012 BMW 5-Series, 6-Series, 7-Series, X5, and X6 vehicles manufactured from April 1, 2011 through August 1, 2011.The amendment to Recall 11V-522 was assigned a new recall number, Recall 12V-166, and covered approximately 69 MY 2011 Rolls-Royce Ghost vehicles manufactured from April 7, 2011 through June 2, 2011.The Office of Defects Investigation (ODI) analyzed complaint data provided by BMW as well as complaints submitted to ODI from consumers. In total, there were 30 unique Mini Cooper reports indicating engine fire.In addition, BMW provided warranty data showing 493 claims for replacement of the subject component on Mini Cooper vehicles.Owners of the recalled vehicles are notified to take their vehicle to a BMW dealer, who will replace the auxiliary water pump to prevent any incidents related to this issue.This preliminary evaluation is closed.The ODI reports cited above can be viewed at www-odi.nhtsa.dot.gov/owners/SearchNHTSAID under the following identification numbers (ODI Nos.):10286597, 10286663, 10289793, 10310677, 10314796, 10342365, 10394808, 10394192, 10403982, 10418325, 10422646, 10429003.