The APR tune on a GTI can be switched back to stock, and there is a locking function that obscures the switching mechanism unless an unlock code is entered. So the average mechanic and technician can't detect it.
However, in the last 6 months or so, VW's VAS system (used by dealers) has been updated and can now scan the ECU and will detect if a tune is present (including the APR tune, even if locked and obscured), and will flag the car as modified with VW in Germany. As far as I know, scanning the ECU with VAS is standard procedure as part of a dealer service.
If you're planning on tuning your car, I'd suggest you plan on being open and honest with your dealer/service manager.
2008 MkV Volkswagen Golf R32 DSG
2005 MkV Volkswagen Golf 2.0 FSI Auto
Sold: 2015 8V Audi S3 Sedan Manual
Sold: 2010 MkVI Volkswagen Golf GTI DSG
Interesting that. If the dealer found out about the tune but still carried out the service per VW's specs and gave it back and said all good, does that mean it is all covered under the VW warranty or the dealers own one for service. I would think that if they found it, they would tell you about it prior to you picking up the car and you paying for the service. Or is there something amiss here?
Wouldn't that depend on if you were claiming a job on warranty? Any work that's performed is still covered under a statutory warranty, regardless of whether the factory new-car warranty (if still applicable) now excludes certain items. I suppose it's up to the VW tech / service manager as to whether they discuss it with you or not... Although to be fair I really have no idea on the procedure here.
Last edited by AdamD; 05-06-2013 at 09:32 AM.
2008 MkV Volkswagen Golf R32 DSG
2005 MkV Volkswagen Golf 2.0 FSI Auto
Sold: 2015 8V Audi S3 Sedan Manual
Sold: 2010 MkVI Volkswagen Golf GTI DSG
Yeah I suppose I was looking at it from the angle that if someone bought a used car with a tune and didn't know, then serviced it and the dealer never said anything they would assume all good. Then if something needed fixing under warranty, the dealer would then deny it for a tune despite never commenting about it all that time. Which is somewhat misleading and irresponsible.
I would think if I was running a dealer and would deny warranty claims for tunes etc, I would tell the customer beforehand so there is no push back if that time ever arises....
Has anyone else had an experience worth sharing here?
All good points but I suspect it would still be buyer beware and their problem. However a good dealer may wish to discuss with the owner for the reasons above.. but when you hear so many stories about dealer servicing attitudes I suspect this would probably be glossed over.
--- FS: 2016 Golf GTI 40 years, white, DSG, 18,xxxkm -------------------------------------------------------------------
2019 Audi SQ5 | 2016 Golf GTI CS + OZ UL HLTs | Retired: 2018 Audi RS3 sportback + OZ Leggera HLTs
2017 Golf R Wolfsburg Sportwagen | 2016 BMW 340i + M-Performance tune/exhaust | 2015 Audi S3 sedan
2014 Golf GTI + OZ Leggera HLTs | 2012 Polo 77TSI (hers) | 2010 Golf GTI Stage 2 + OZ ST LMs
All this should be a separate topic (I'm sure we covered it once before), the "TD1" flag on SOME new cars (not all) is flagged on a system in Germany after a checksumm comparison. When certain operations are carried out by the dealer and the "Guided Fault Finding" prompts the technicians to carry out certain operations, this "flag" appears & they have to get authorisation from head office. This is a very, very brief overview of how it works and at the end of the day, it comes down to personal decisions in head office (and discussion with the service advisor). All APR dealers are well schooled up on how exactly it works, so if you have any issues, contact them directly!
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