I didn’t post this right away because I wanted it to drive the TRG for an additional couple of days to confirm my suspicion.
I believe (this is my opinion) there is an Auto differential fault in center and rear differential lock in the VW Touareg V6. Low-rear-center gear does not disengage completely after changing to high gear, resulting in higher fuel consumption, low throttle speed, increased gear wear and tear in the transmission as well as increased transmission noise.
Not sure if this should be considered as major recall in all Touareg but it is something to think about.
This problem manifested for the 2nd time, now while driving a Touareg loaner from the dealer on 6/26/2004, 16:30. Same as in my Touareg, which is currently in the dealer for transmission repairs, in addition to many other issues.
How did I notice this problem, after driving a loaner for 2 weeks and getting 18-20 MPG in city/HW, and a very smooth driving.
I went off the road, used the lower and center Auto-Diff gears and when coming back to higher gear. I notice the car heavier and not responding as fast a usual. I started monitoring the fuel consumption and a tedious noise coming up (1st I thought it was the engine) from the transmission. The fuel consumption when down to 13 to 14 MPG and there is also a 1-2 second delay after applying more gas to increasing the speed (throttle).
Has anyone else had a similar problem or concern in their V6 or V8?