NHTSA Complaint #10726416 — 2009 JAGUAR XF

THE REAR DIFFERENTIAL SEAL FAILED DUE TO FAULTY MANUFACTURING PROCESS WHEREIN CONTAMINATED "LIFETIME" DIFFERENTIAL FLUID WAS SEALED INTO THE DIFFERENTIAL HOUSING CAUSING EXCESSIVE AND PREMATURE PINION GEAR WEAR. THIS WEAR RESULTS IN MOVEMENT OF THE HALF SHAFTS AND THE DESTRUCTION OF THE DIFFERENTIAL SEALS. IN ORDER TO REMEDY THE SITUATION AN ENTIRE "NEW" DIFFERENTIAL MUST BE INSTALLED. SIMPLY ORDERING REPLACEMENT SEALS AND PINION GEARS WILL NOT SUFFICE AS THE DIFFERENTIAL DESIGN WAS CHANGED AND THE NEW COMPONENTS ARE OF A DIFFERENT SIZE, WHICH RESULTS IN REQUIRING COMPLETE REPLACEMENT OF THE REAR DIFFERENTIAL AT A COST OF ANYWHERE FROM $6200 - $8900, ACCORDING TO JAGUAR DEALERSHIPS. JAGUAR IS FULLY AWARE OF THIS ISSUE AND HAVE ISSUED MANY TSB REGARDING SAME; HOWEVER, THEY FAILED TO TAKE PREVENTIVE ACTION ON TENS OF THOUSANDS OF VEHICLES, MANY OF WHICH DID NOT SHOW SYMPTOMS OF FAILURE UNTIL AFTER THE MANUFACTURER'S WARRANTY EXPIRES, RESULTING IN HEFTY BILLS TO UNSUSPECTING OWNERS.