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VW Touareg TDIs This is a general discussion about Touareg TDIs. Non TDI related postings will be moved or removed.

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Old June 22nd, 2019, 18:55   #1
Join Date: Jun 2019
Location: Canada
Default Rolling back the dieselgate Touareg fix?

Hi, fellow Vdubbers. I am the excited new owner of a 2015 Canadian Touareg TDI, and I am interested in returning it to pre-dieselgate form.

My understanding is that such a rollback requires both ECU and TCU adjustments.

Could someone please point me to where I can get guidance and supporting details?

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Old June 25th, 2019, 19:56   #2
Join Date: May 2003
Location: Utah

PM sent with yrktreg’s contact info from this thread on clubtouareg

I bought a spare TCM before I brought mine in for the fix because that was the biggest complaint post fix. It still didn’t resolve the sh!tty tune that VW gave us on the engines. I am curious to see if anyone has brought theirs in for warranty work while having their vehicle retrofitted with an old tune.

I’m dying to tune mine but don’t want to lose my warranty
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Old July 22nd, 2019, 05:09   #3
Carpe Vinum
Join Date: Jul 2019
Location: Alberta

^my understanding is that swapping the transmission control module does NOT show in the vehicle logs. If so, then the dealer will have no digital audit trail to refuse warranty service on TCM-related work.
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Old July 22nd, 2019, 07:56   #4
Carpe Vinum
Join Date: Jul 2019
Location: Alberta

^I think a TCM rollback is more for driver experience than mileage. Many drivers don't like how the emissions fix changed the shift pattern.
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