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Sit rep update Nov '22: After getting a little 'fruity' with the Service Manager of my local VW dealership, I finally got him to agree further investigation of my D7/D8 'hunting' issue. The car has only done about 2k miles since the upgrade was done in June, but despite me doing several gearbox-resets, the problem has not gone away. The dealer's Master Technician went on a ride-out with me on a dual carriageway, and he agreed that once D8 had been reached at around 55mph+, it would immediately drop back to D7 with the slightest touch of the accelerator. Only above 80mph would it stay in D8 - sorry officer! So, back at the workshop they hooked the car up to their ODIS system, and it showed 'TCM software version 3620'. That is clearly a newer version than the 3546 one mentioned earlier, but it obviously still hasn't cured the problem. The dealer has now agreed to contact VW Technical UK with a request for a solution, and if necessary to refer to VW HQ in Germany. I will hold my breath for a solution, and post an update/outcome in due course for the interest of anyone else similarly afllicted.
Please update when you get a response from VW 馃憤
 

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Sit rep update 23 Jan '23: Hi Cass and all, Having waited over 2 months for a response from the dealer, and with an open-case complaint still pending with VW Customer Services, I called in at the dealership (Heritage VW of Yeovil) today, to find out if they had had any kind of reply from VW Technical regarding the D7/D8 'hunting' issue. They had obviously had a response from VW, but had deigned not to inform me. You've guessed it - VW Technical does not consider the software upgrade to have caused any problem at all, as they said the upgrade was specifically designed to smooth-out gear changes in the Aisin auto gearbox, to reduce emissions (shades of Dieselgate, perhaps?), and to provide a better interface between the gearbox and throttle. Talk about bullshitting the customer, eh? I mentioned this forum, and the fact that this kind of issue has affected quite a few Touaregs in recent years, and that solutions have been found. VW clearly wishes to sweep this problem under the carpet, and hope customers will just go away. In my case I certainly will, when I've had a bit more use out of my Treg as a towcar for our caravan. Having buggered up the way the car runs, and then denying all responsibility for doing so, do they really expect me to remain loyal to the brand? I know I can use the Sport or Tiptronic manual settings to keep the gearbox in gear 8 at appropriate speeds and engine loads, but surely that's not the point of an auto box; it's a bit like having an old 4-speed manual with switchable overdrive!
Can anyone suggest if I have any kind of redress for this issue? Would Trading Standards be able to help, perhaps? I suppose it's VW's word against mine, and they hold all the technical cards, it seems. Any other potential solutions or approaches would be gratefully accepted by me anyway.
 

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Whist it's wrong that you should have to sort this out yourself, you could fit used TCM with a known "good" software version? At least you would have your car back the way it was.
 

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I am sorry to hear about your recent experience.

Seems to me that the dealers are the biggest thing wrong with VW. They don't give one fuck about retaining your business and seeing you drive off in a new Treg.

VW CS has zero control over their dealers, so don't hold your breath on that one. All the muppets in MK will do is listen and agree and wince, but they can't do shit.

I reported a dodgy VW dealer to VW CS and after a month they simply told me that they can ask a dealer to do something, but they can't make em. You can read about that shit show here -


Trading standards will also be a waste of time IMHO.

I would get some legal advice. Perhaps you can take em to the small claims court, but I guess that's gonna be a tough case to make.

VW just don't give a fuck about their customer, that much is certainly true. Ain't no point in flogging a dead horse.

I am content with my 7P, but owning another VW product and by default having to deal with the dealers is something I would never ever put myself thru.

And when you consider the other marques products, the new Treg really ain't that good (no disrespect to those that have bought em).

There are new Treg owners on here who have plenty of problems that the dealers just cannot sort, so the dealer network apparently shows zero sign of improvement!

They can' sort out this chaps ACC!!! WTF?!?!


The VW dealer network is just a pathetic joke mate. No amount of complaints to dealers, CS or trading standards is going to change em.

If I were you (and you and I are very much on the same page in terms of our views on the dealer network), enjoy it as much as you can whilst you can and get shot of it the moment you fall outta love.
 

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Thanks Chasey and Davey for your thoughtful responses. This whole f-up situation reminds me of a phrase around in the days of old British Leyland, but it could just as well apply nowadays to VW and their dealers: " Designed by computer, built by robots, mended by morons! " I may in time follow up your advice, Chaser, but I've just contacted a company called Avon Tuning, near Bristol, which specialises in engine and gearbox remapping, to see if they have any knowledge of and possible solution to this problem. Either way it could cost me a fair bit of dosh to sort something that was not of my doing or choosing in the first place.
My wife has a Suzuki Vitara (2020, 1.4 petrol turbo, auto) which does everything it says on the tin, with no fuss or bother. No good for caravan towing, sadly, but otherwise very satisfying to own, with much engineering integrity. I think I'll be 'turning Japanese' (or Korean) for my next towcar....Happy Tregging! (if/when you can).
 

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Has the dealer refused to return the software version to what it was prior to the update? Perhaps this isn't possible due to software limitations (my Mac's wont allow me to downgrade OS updates for example...

If they won't / can't, then I would ask for some kind of good will in respect of the costs that you may incur going to a third party for a fix. Perhaps they can offer you a reduced rate on your next service?

TBH - I wouldn't just roll over. I'm not saying that you have, but it would be worth maintianing the pressure on em. I would be wary of going to a third party until you are 100% satisfied that you have pushed as hard as you can.

Bottom line is IMHO; if the vehicle behaves worse than when it went it for a 'fix' then you should have some recourse. E.g. - If it were a tracking issue and you paid for it to be corrected, but it wasn't, then you would of course have some recourse (you'd be asking em to do it again), so not sure how / why you would have no recourse in this instance.

I believe there is a warranty on repair work, you can read about it here -


Volkswagen Authorised Network workmanship warranty

Members of the Volkswagen Authorised Repairer network give a warranty for their workmanship on all repairs and servicing. The warranty on repairs is 1 year/12,000 miles from the date of the work, whichever occurs first. Should any repairs be required in that period on work carried out by a member of the Volkswagen Authorised Repairer network, the original Repairer will carry out such repairs free of charge, provided:
  • Repairs are required as a direct result of faulty workmanship by that member of the Volkswagen Authorised Repairer network.
  • Repairs are not required due to normal wear and tear or other exclusions. Items replaced under the terms of this warranty become the property of the Volkswagen Authorised Network. A member of the Volkswagen Authorised Network may choose to pay for work under this warranty to be carried out by another member of the Volkswagen Authorised Network.

In my experience - applying pressure is not that hard. Try to keep comms in writing etc.

The rouge dealer who sold me my first Treg ended up calling me directly as he was worried I was going to turn up at his house (which I was never going to do!), but the fact that he had got his fear on and called me with a trembling voice worried for his own safety made me laugh, the daft *unt! Hopefully he learned something from that experience...

Keep us posted fella.

:)
 

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Could post number 10 be relevant to you?
 

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I'm assuming you have tied the gearbox reset?

Open car
Ignition on, but don't start car
Depress accelerator fully for 30 seconds
Take foot off accelerator pedal
Turn ignition off
Lock car
Open car and drive - The gear box is now rest. You don't get a chime or anything, but it does work....
 

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Whist it's wrong that you should have to sort this out yourself, you could fit used TCM with a known "good" software version? At least you would have your car back the way it was.

A bit pricey considering it's not your fault but like I said you would have your car back the way you like it.
If I'm correct this has the same software version as I have (2881) which is the one before this issue appeared.
My car drives normally.. dropping into top gear at 49mph and will stay there. I've told my VW dealer under no circumstances are they to upgrade the TCM software.
 

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Font Pattern Parallel Tints and shades Symmetry


You can see the part number for software ending in C and also the software version 2881 in address 02 of this scan from my vehicle.
Seems to match the eBay part.
 

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Hi again Chaser and Davey, Thanks for your continued support with this issue, which VW clearly doesn't consider to be an issue. I was told by the dealer that did the 'cock-up' that software updates cannot be reversed, only overwritten by new coding ( like Windows 10 can't be put back to Windows 8, etc). The service manager who told me this news promised to email me the official response from VW Technical on this matter, but so far hasn't done so.....maybe so as not to implicate VW in writing that may be used against them? Perhaps they all attend training courses on how to duck and dive customer complaints?! Thanks Davey but I have done several gearbox resets in the past few months since the software change, and although these often show smoother changes through the lower gears, they clearly can't control the gear-change parameters set by the software coding, which affects change points, throttle position, etc.
Maybe I should just email the link to this forum thread to the service manager, and see if it shames him into any meaningful response? At the moment though I can't be bothered to give myself any more headspace of worry about this matter, when the world has more pressing things to deal with. I will of course update the forum if and when I get this sorted, by whatever method.
 

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Hi to all who have kindly offered advice on this matter. Here is hopefully my final Sit Rep on this topic, which I reckon has been bugging many Treg owners, even if they are not aware how or why their car may have a gearbox 'hunting' issue.
First, ze Bad News:
I asked the dealer service manager to forward me the official response from VW UK Technical on this issue. It reads as follows..."VW Software Update Campaign no. 23DK optimises the interaction between the engine and gearbox, thereby reducing the emissions of your vehicle. Depending on driving style and operating conditions there is therefore a change in biting points in the automatic gearbox, which causes it to change gear at different engine speeds. In certain driving situations the gearbox reacts more sensitively to the operation of the accelerator pedal, so that the vehicle drives in an emission- and consumption-optimised gear. This can cause more frequent gear changes.
It is not possible to reverse the software to the previous version. This suggests the experience you are having is a normal characteristic and cannot be altered either through software or part replacement" . (Anyone else smell the bullshit here....?). The service manager then had the cheek to ask whether I had been made aware that the car's driving characteristics may change after application of the new software; of course I said 'certainly not, but that didn't stop VW doing it, did it?'.
Now for ze Good News:
Having been rebuffed on all sides by VW, I was determined to research other possible avenues to sort the problem. Some internet trawling led me to a company called AVON TUNING (based near a village called Tockington, close to junction 16 of the M5, just north of Bristol); they have an excellent website that describes all their services - www.avontuning.co.uk; this includes gearbox TCU reprogramming. To cut a long story short, having presented my car to them for half a day, their technical wizardry has worked wonders on the car's gearbox, and how it interacts with the engine and throttle; no trace of 'hunting' remains, and the car runs happily in D8 from around 50mph, and stays in that gear during normal acceleration. It has also sharpened-up changes in the lower gears, making the car much more pleasant to drive overall. Avon Tuning do have ODIS and other digital systems that clearly CAN reverse incorrect software. They told me that they found the gearbox change points to be 'all over the place' after a test-drive, and that they found a previous software version (2083) to work better with my original TCU, and overwrite VW's so-called 'upgrade' version (3620, I was told by the dealer). They did advise me that software version numbers are not critical; they can always test to find which software version works best with a particular TCU, whatever its age. Incidentally this cost me 拢299 including VAT, but was well worth it in my view, as it has totally transformed the way the car drives - so I may keep it a while longer now!
Incidentally, I'm considering how I might report this outcome back to VW, to see if they feel any embarrassment (unlikely), and whether they would consider any kind of recompense, perhaps in the form of some future servicing discount - but no software changes allowed ! (too much wishful thinking, methinks.....).
I hope this encourages other owners to go down the 'specialist' route, and to bypass the dopey dealers whenever possible.
 

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I would present the garage with the bill and a demand for payment within 7 days or the case will go to the small claims on line.



I would also buy an OBDII lock to put on the car prior to any service work to prevent unauthorised access in future.
 

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Thanks for the update on this - it鈥檚 clearly been an issue which has bugged many owners for some time now.

I doubt that VW or the dealer would respond positively in your favour but bear in mind that if you present your car to a dealer in the future, they could well reinstall the 23DK software campaign again so you will have to firmly instruct them not to do so and get that written on the job sheet.

Good to know there are firms about who have the nous to sort out issues like this 馃憤
 

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Points well taken, Nooby and Cass. I have no intention of using any VW franchised dealer again in future, unless I absolutely have to. As the car is coming up to 11 years old, I'm happy for general servicing and repairs to be handled by my local (village) garage, who have a fair knowledge of (and in their view, disrespect for) VAG products. For anything they can't do, I'm lucky to have a long-established VAG/Porsche specialist garage within 5 miles of where I live in Somerset, and I'll continue to patronise these independent outfits whenever possible. In the case of the gearbox software issue, though, even the latter garage baulked at trying to solve the problem, so all credit to companies like Avon Tuning who really know their onions on matters to do with remapping of engines and gearboxes. Sometimes it's worth having an older vehicle that is not subject to manufacturer warranties and the all the problems that can entail in relationships with main dealers.
As for VW dealers and VW Customer Services: " I (don't) forgive them, for they know not what they do....."
 

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VW dealers are utter shite! Plenty of threads full of complaints (not just mine)!

VW CS are almost a shite as the dealers too.

Specialists are the way!!

I would second @NoobyT comment - take em the bill. The next best thing IMHO would be to hang around the dealers forecourt with the sole intention of costing them a sale!
 
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