Engine Exhaust System problems of the 2009 Mini Cooper S

Two problems related to engine exhaust system have been reported for the 2009 Mini Cooper S. The most recently reported issues are listed below.

1 Engine Exhaust System problem

Failure Date: 02/03/2012

While driving the vehicle the abruptly halted causing me to vere off to the side of the road so that it could be stopped somewhere safe. Vehicle would not restart, no warning lights of any sort were present prior to this incident. Vehicle needed to be pushed to a location to allow it to be towed. Details of service provided from knauz Mini as as follows: found car not starting, during fault inspection found fault for exhaust cam sensor not reading. Found exhaust cam not moving through oil cap on valve cover. Removed valve cover for cylinder, found timing chain to be broken causing exhaust cam timing chain sproket to break off exhaust cam. Found the timing chain breaking causing damage to complete engine due to timing chain breaking in two pieces. Found lower crank damaged from timing chain wedging in between block and timing chain cover area. Removed complete engine and replaced, note during removal of sub-frame bolts on rail found treds to be damaged from factory (subframe never removed before) while being installed. Re-tapped treds and replaced both bolts. Test drove car with new motor overnight no further problems found.

2 Engine Exhaust System problem

Failure Date: 09/22/2011

Engine oil spraying from camshaft chain tension-er seal. Oil was spraying out under pressure. I would consider this to be a fire hazard, as hot exhaust components are nearby.




Safety Ratings of Cooper S Cars
Cooper S Service Bulletins
Cooper S Safety Recalls
Cooper S Defect Investigations