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The timing chain problem was on the earlier 3.2 V6 that the 3.6 replaced.
The chain maker carried on using worn stamps when making the chain parts resulting in some chains stretching prematurely. Replacing the tensioner helped in some cases but not all and since the engine was originally designed for east to west installation but is installed south to north in the Touareg, the timing chain is highly inaccessible at the back of the engine thus requiring it to be removed for the chain to be replaced unless you can find a female mechanic with tiny hands.
The chain maker carried on using worn stamps when making the chain parts resulting in some chains stretching prematurely. Replacing the tensioner helped in some cases but not all and since the engine was originally designed for east to west installation but is installed south to north in the Touareg, the timing chain is highly inaccessible at the back of the engine thus requiring it to be removed for the chain to be replaced unless you can find a female mechanic with tiny hands.
