Timing Tensioner problems of the 2012 Audi A4

We were just informed of a class action lawsuit involving timing chain and tensioner failure. This failure could cause catastrophic engine failure while driving and cause the vehicle to stop possibly at highway speeds causing an accident and harm to vehicle occupants. The lawsuit could result in an extended pro-rated warranty but no recall or repairs made to any vehicle prior to engine failure. Audi is aware of this problem and has issued a technical service bulletin to the dealer network but will not offer any repairs outside of the current warranty. We believe all affected vehicles should be recalled and repaired prior to a catastrophic engine failure resulting in loss of life.

Timing chain tensioner failed causing chain to slip and immediate engine stoppage.

Replacement of timing chain, timing chain tensioner, timing chain guides & lower timing cover with piston repair.

Timing chain tensioner failed causing engine damage and almost caused a severe accident. While driving vehicle lost almost all power and decelerated to a 15 mph pace on major street with 45 mph speed limit.

At approximately 1000 miles on the odometer of my 2012 Audi A4 avant quattro, a strange noise began from the front area of the engine. The noise happens at the first startup of the engine regardless of ambient temperature. After about 2 minutes when the engine idles down the noise stops. Different Audi technicians at two dealerships have diagnosed the noise as 1) cam tensioners, 2) a bad bearing inside the cam case, 3) secondary blower motor and, 4) lash in the vvt system. None of the technicians have put a wrench on any of the named components because, according to the dealerships' service managers, Audi USA will not authorize repairs. According to Audi USA, the strange noise is a normal function even though Audi customer service cannot explain why the noise was not apparent for the first approximate 1000 miles of driving.