Carista - Transmission mileage much higher than engine mileage - what's going on?

[peteaufc]

Hi all,

I picked up my 2019 T6 204 DSG last week and ordered a Carista OBD which arrived yesterday.

Out of interest, I've been going through all the menus and looking at the information and noticed a huge discrepancy between the values for Instruments/engine mileage (both exactly where I expect for the van based on the odometer) and the two different values given for "Transmission mileage"

I've attached a screenshot to explain better.



Can anyone explain what is going on here? Have I bought a van that has had the mileage tampered with, or is there a logical explanation?!

Any help/advice would be very welcome, thanks!

 

[jayc001]

Easy to change clocks, far less easy to change DSG mileage so either it's had replacement mechatronic from a higher mileage vehicle or it's been wound back.

 

[sparkzer]

Easy to change clocks, far less easy to change DSG mileage so either it's had replacement mechatronic from a higher mileage vehicle or it's been wound back.

I was thinking the same, though at 2019, its barely out of warranty so cant imagine why a 2nd hand mechatronics would be fitted (optimistically, it could be a service exchange/refurbished unit, fitted in the past few months since coming out of warranty).

I'd be looking for other tell tales signs of the vehicles milage, peddle rubber/steering wheel/gear stick wear etc.

Out of interest, where was the van bought?

 

[peteaufc]

I bought it from a VW Commercial Vehicles dealership under the approved used Volkswagen programme.

Before I bought it, the steering wheel had a lot of wear (was taped up around the top) - the sale exec told me about this and they had it refurbished.

The mileage seems consistent through the services and MOTs, etc:
Registration - Jan 2019
Service Feb 2021 - 17502 miles
MOT Feb 2022 - 23167 miles
MOT Jan 2023 - 30223 miles
Service Aug 2023 - 33184
MOT Oct 2023 - 33199 miles (directly prior to my purchase)

I've got the full service history and there is nothing in there about replacing a mechatronic unit in there.

Does this mean it is likely that the mileage has been altered?!

What should I be checking/doing next?!

(sorry if there is something I'm missing here, but I'm not an expert/vehicle savvy by any manner of means!)

 

[sparkzer]

33k with a taped up steering wheel does sound odd....if any 'Tom-foolery' had been done, id expect it was from first registration to first service with that being a 2year gap and the other intervals seeming pretty consistent. i dont suppose there was an owner change in 2021 was there?

 

[jimc91]

Could be an issue with how Carista reads the data, maybe others with the same engine/transmission could check their readings

 

[sipep]

I think is much easier to block mileage than most think.. I've seen a few dodgy post on Facebook...

 

[peteaufc]

33k with a taped up steering wheel does sound odd....if any 'Tom-foolery' had been done, id expect it was from first registration to first service with that being a 2year gap and the other intervals seeming pretty consistent. i dont suppose there was an owner change in 2021 was there?

Nope, only the one previous owner, known to the dealership and always serviced with them.

On flexible service plan, so had those two services to date.

Seems to average 7k-8k each year since registration. I did a vcheck report and got a copy of the dealerships HPI report and both said it had passed their mileage checks.

 

[peteaufc]

Could be an issue with how Carista reads the data, maybe others with the same engine/transmission could check their readings

This is what I'm hoping - is anyone else able to check?

Any idea why Carista would show two entries (slightly different) for "Transmission mileage", rather than just one?

 

[n10n]

Any idea why Carista would show two entries (slightly different) for "Transmission mileage", rather than just one?

Looking at available measuring values of DSG DQ-500 used in T6, there’s two different mileages reported - Carista probably reports the both with same name. With VCDS names are as found from this post:

DSG gear box problems

Update to the original thread; There is indeed an ECU update. Mine has just been updated by Vw and only driven back from garage, but 1st gear take off delay has reduced and gear selection seems better. brake also holding better on a hill and only tinny rollback. What was the service action...

www.t6forum.com

IDE02820

Transmission mileage

59903.1

IDE03171-ENG102987

Driving strategy transmission mileage -Q002 Total Driving Time

63984.9

That post also seems to have about 4k difference. I don’t know what the difference means - one guess is that factory testing does about 4k after which the box is reset for delivery. But reset only zeroes the main mileage.

Sample size one though. Should look at few more samples to be sure the difference is always in the 4k neighborhood.

 

[Pauly]

I wouldn’t be too worried, the engine and cluster are the two main values that are useful here, the small discrepancy between them is also normal as dealers will zero the cluster mileage at PDI (clusters can be cleared as long as value is below 50) and the km values shown match the miles value displayed so I would say it’s all good ?

 

[peteaufc]

I wouldn’t be too worried, the engine and cluster are the two main values that are useful here, the small discrepancy between them is also normal as dealers will zero the cluster mileage at PDI (clusters can be cleared as long as value is below 50) and the km values shown match the miles value displayed so I would say it’s all good ?

Any idea why the transmission mileage is showing almost twice as high as the engine and cluster though?

That seems a huge (and concerning) difference.

 

[peteaufc]

Looking at available measuring values of DSG DQ-500 used in T6, there’s two different mileages reported - Carista probably reports the both with same name. With VCDS names are as found from this post:

DSG gear box problems

Update to the original thread; There is indeed an ECU update. Mine has just been updated by Vw and only driven back from garage, but 1st gear take off delay has reduced and gear selection seems better. brake also holding better on a hill and only tinny rollback. What was the service action...

www.t6forum.com

IDE02820

Transmission mileage

59903.1

IDE03171-ENG102987

Driving strategy transmission mileage -Q002 Total Driving Time

63984.9

That post also seems to have about 4k difference. I don’t know what the difference means - one guess is that factory testing does about 4k after which the box is reset for delivery. But reset only zeroes the main mileage.

Sample size one though. Should look at few more samples to be sure the difference is always in the 4k neighborhood.

Thanks for this - although this post/report doesn't show the engine or Instruments mileage, the poster of the report states that the mileage of this van is around 37000, which seems to match the mileage of the transmission mileage on that van.

That is probably making me more concerned to be honest, as the data showing for my van on Carista has my engine mileage/odometer showing 33597 miles (54070km), but the data for the transmission mileage is showing almost double that 98140km (approx 61000 miles).

How would I be able to check if the mechatronic had been swapped in from another vehicle or if the odometer has been wound back? Would it be worth taking it to my local VW van centre and asking for their advice and for them to check? (I originally bought the van from a dealership around 300 miles away from me).

 

[T6 dork]

there are people out there that clock the mileage off the speedo just before every mot
but i dont know if that does or doesnt do the gearbox
taped up steering wheel is iffy

 

[mmi]

That post also seems to have about 4k difference. I don’t know what the difference means - one guess is that factory testing does about 4k after which the box is reset for delivery. But reset only zeroes the main mileage.

Sample size one though. Should look at few more samples to be sure the difference is always in the 4k neighborhood.

Quite a few of more samples below - there indeed seems to be an offset from day 1.
The IDE02820 follows very closely the engine/dash numbers (less than 0.3% deviation).



Partially zoomed in

---

How would I be able to check if the mechatronic had been swapped in from another vehicle or if the odometer has been wound back?

VCDS diagnostics tool would tell a lot about internals of DSG, including build date - anyways, hopefully someone can confirm Carista's accuracy.
Meanwhile, please post "Detailed ECU info"-report (under Carista Service menu). Let's check what it tells.

 

[peteaufc]

Thanks to everyone for all the comments and info so far.

Detailed ECU info report output is as follows:

ECU info obtained with Carista 8.1.2 for Android:

VIN: [REMOVED FROM POST]

CAN network gateway
Part #: 7E0909901
Component: GW-K-CAN TP20
Software version: 0762
ASAM/ODX identifier: [none]
Coding: 042307 (hex)
[No fault codes]

Engine
Part #: 04L906056KQ
Component: R4 2.0l BTD
Software version: 3775
ASAM/ODX identifier: EV_ECM20BTD03004L906056KQ
Coding: 00254014437401080000 (hex)
[No fault codes]

High beam assist
Part #: 7E0857511F
Component: FLA
Software version: 0003
ASAM/ODX identifier: EV_HighBeamAssisAU316
Coding: 040401E200000100000000 (hex)
[No fault codes]

Transmission
Part #: 0BT300046J
Component: DSG DQ500-7F
Software version: 5302
ASAM/ODX identifier: EV_TCMDQ500021
Coding: 0014 (hex)
[No fault codes]

ABS
Part #: 7E0907379Q
Component: ESC
Software version: 0133
ASAM/ODX identifier: EV_Brake1ESCCONTIVN75XGP2
Coding: 557E409865688484AA79027AA68721E679F700 (hex)
[No fault codes]

Steering angle
Part #: 6R0959654
Component: LENKW.SENSOR
Software version: 0070
ASAM/ODX identifier: EV_LWSKLOVW25X
Coding: 01 (hex)
[No fault codes]

Airbags
Part #: 7E0959655J
Component: VW10Airbag021
Software version: 0018
ASAM/ODX identifier: EV_AirbaVW10BPAVW12X
Coding: 000000000000000000000000000000003231 (hex)
[No fault codes]

Instrument cluster
Part #: 7E0920971A
Component: KOMBI
Software version: 2030
ASAM/ODX identifier: EV_Kombi_UDS_VDD_RM09
Coding: 440F010300 (hex)
[No fault codes]

Infotainment system
Part #: 5C0035680G
Component: MU-S-ND-ER
Software version: 0472
ASAM/ODX identifier: EV_MUStd4CTSAT
Coding: 065700013C00000011111101008808001F0100D6002001004F (hex)
Fault codes:
02562 Manufacturer-specific code

Immobilizer
Part #: 5K0953234
Component: IMMO
Software version: 2030
ASAM/ODX identifier: EV_Immo_UDS_VDD_RM09
Coding: 000002 (hex)
[No fault codes]

Headlight aiming
Part #: 6R0907357C
Component: AFS-ECU
Software version: 0050
ASAM/ODX identifier: EV_HeadlRegulVWLWRCC
Coding: 0FCE020001000000 (hex)
[No fault codes]

Heater & air conditioning
Part #: 7E0907047AD
Component: Climatic-T5
Software version: 0708
ASAM/ODX identifier: EV_ClimaticT5
Coding: 0000000003 (hex)
Fault codes:
9672979 Manufacturer-specific code

Parking/steering assist
Part #: 7E0919475AA
Component: PARKHILFE 8K
Software version: 0212
ASAM/ODX identifier: EV_VW75XParkAssis8K
Coding: 31810C (hex)
[No fault codes]

Central electronics
Part #: 7E0937090D
Component: BCM PQ25 Max4
Software version: 0762
ASAM/ODX identifier: [none]
Coding: A0AC393A0A61341193284F606CEB8F74C084738960CD79603304003F0860 (hex)
Fault codes:
03303 Manufacturer-specific code

Battery regulator
Part #: 7E0907534
Component: Batt.regelung
Software version: 0762
ASAM/ODX identifier: [none]
Coding: 330B1A73 (hex)
[No fault codes]

Trailer
Part #: 1K0907383H
Component: Anhaenger
Software version: 0130
ASAM/ODX identifier: [none]
Coding: 410D000103000000 (hex)
[No fault codes]

Adaptive cruise control
Part #: 7N0907572C
Component: ACC Bosch PQx
Software version: 0211
ASAM/ODX identifier: EV_ACCBEGVW361
Coding: 00005800FE0779 (hex)
[No fault codes]

 

[n10n]

Quite a few of more samples below - there indeed seems to be an offset from day 1.
The IDE02820 follows very closely the engine/dash numbers (less than 0.3% deviation).

View attachment 218317

Partially zoomed in
View attachment 218318

---

Nice lineage.

Got by the computer and can confirm my tranny also shows the difference although just 3300km as opposed to > 4k km. So, now we know at least 4 vehicles show the difference, it's range seems to be 3-5k km and the difference stays constant (or rather I don't know what would reset "driving strategy"). As @mmi data shows, the difference is there from the factory so nothing to worry about, probably just factory testing or initial training of the mechatronic.

IDE02820,Transmission mileage,76907.0, km
IDE03171-ENG102987,Driving strategy transmission mileage-Q002 Total Driving Time,80200.8, km

 

[Crazymind]

Mine as well. Although the difference is 700km, but I have only clocked 16k miles.

 

[peteaufc]

Got by the computer and can confirm my tranny also shows the difference although just 3300km as opposed to > 4k km. So, now we know at least 4 vehicles show the difference, it's range seems to be 3-5k km and the difference stays constant (or rather I don't know what would reset "driving strategy"). As @mmi data shows, the difference is there from the factory so nothing to worry about, probably just factory testing or initial training of the mechatronic.

I get that there seems to be this consistent difference of around 4k between the two transmission mileage values, but it is the 44,067km difference between the engine mileage/odometer reading, and the reading for the transmission mileage on my van?

Surely that is a big concern/worry when my van is only supposed to have done ~32k miles, but the transmission milage is showing ~60k miles?!

 

[jayc001]

I bought it from a VW Commercial Vehicles dealership under the approved used Volkswagen programme.

Before I bought it, the steering wheel had a lot of wear (was taped up around the top) - the sale exec told me about this and they had it refurbished.

The mileage seems consistent through the services and MOTs, etc:
Registration - Jan 2019
Service Feb 2021 - 17502 miles
MOT Feb 2022 - 23167 miles
MOT Jan 2023 - 30223 miles
Service Aug 2023 - 33184
MOT Oct 2023 - 33199 miles (directly prior to my purchase)

I've got the full service history and there is nothing in there about replacing a mechatronic unit in there.

Does this mean it is likely that the mileage has been altered?!

What should I be checking/doing next?!

(sorry if there is something I'm missing here, but I'm not an expert/vehicle savvy by any manner of means!)

I would ask for the dealers official response to this discrepancy in writing. I would love to know if main dealers take a full scan during routine services, I very much doubt it but would be a good way to verify mileage. As previously mentioned clock mileage is easy to change via OBD, DSG mileage needs to be done connected to gearbox so those who do large mileage and wind back before MOT/service I doubt go to the trouble.