Crankcase (pcv) problems of the 2009 Volkswagen Tiguan

I noticed a huge oil puddle where my car was parked. I drove straight to the vw service dept in my area. . . The car has less than 75k miles & was last serviced by a vw dealership due to fuel pump recall. Upon my discovery of the massive oil leak, I now know was spawned from the pcv valve going bad which has resulted in blowing out 3 seals and requiring a new pan. I have recieved an estimate from a vw dealership service dept and a well know auto repair shop- both have quoted the cost no less than $2000 with potential of reaching $3000. Essentially the pcv part is about $20. 00 in cost, but because it just "went bad" and its purpose is to allow the engine to breathe. . . Blowing out these additional seals means that the engine will need to be removed to be repaired. The car is valued around $7000 to resale in good condition. Now, a consumer has to spend 30% to 40% of the cars value to repair the faulty valve that caused additional issues in order to stop the bleeding. I bought this car from carmax at 30k miles in Nov 2014- at the time of purchase there was no disclosure of a recall issued in August of 2014 & did not even receive a letter regarding the recalled until 2 years later from either carmax or vw. In all actuality the entire section in the owner's manual regarding the engine was completely removed & is missing. No indicator lights came on or were displayed from the leak or seals. I would have never known if I wasn't park in a paver driveway at someone's home & asked if that large oil mark was there prior to me parking there in the past 24 hrs. If I continued driving mu vehicle, it could have resulted in a sequence catastrophic events, in a vehicle that has been maintained according to all service standards & requirements on behalf of it's owner.

The rear main seal on my 09 Tiguan 2. 0 tsi blew at 709k miles from pcv valve defect. I have heard of several cases of the pcv clogging on the tsi engine cars sending boost pressure into crankcase and blowing the seal.

After noticing excess oil leakage we took our "09 Tiguan to our ase certified local independent mechanic who specializes in european cars. He found a rear main seal failure. Vw pasadena found the following: timing chain failure, crank case breather failure, carbon build up on valves, rear main seal failure, pressure circulation valve (pcv) failure. Vehicle is within powertrain warranty and vw realdriver mechanical failure service contract warranty by miles, but not by terms (5 yr and 3yr respectively). Went to local dealer, escalated to vw America, and denied claim 1/26/17. After owning 10+ vw's in the family this is it. Escalating past claims mgr tomorrow and seeking a resolution.

The engine for my particular car is very poorly designed causing it to have so many issues one after the other. At on 72k miles I have already had the following jobs done to my car: replace pcv valve, decarbonization of the car, rear main seal leak replacement.

Large pool of motor oil under the left side of the engine. Dealer inspected and informed me of a failed rear main seal caused high crankcase pressure buildup due to a stuck (closed) pvc valve.

Pcv valve is defective and tears on 100 percent of all Tiguans. This over pressurizes the crankcase causing a loud noise as pressurized air passes over the front and rear main seal damaging the seals. Exsessive oil leaks from the rear main seal onto the catalytic converter causing in many cases, a fire.

Rear main seal failed due to manufacturer defect causing oil to leak on to hot engine. Every 2. 0 tsi engine in Tiguan, cc, gti, jetta and eos experiences the same failure at around the same mileage. The rear main seal is not a wearing part and should last for the life of a vehicle if well designed. This forum thread shows many owners with the same issue at around the same mileage. . Read more...