we can talk directly now 
Here’s Pavel – from D5T5.com team (formerly VolvoCesky.cz) and we run VDASH suite. Beside many other things, we’ve been frequently asked to check if/how the TFT retrofit could be done. The answer is twofold, actually threefold – yes-maybe-no:
#1 retrofitting the TFT displays into MY14- cars (that have the “analogue” (cheapo) DIM with a single monochrome display in the center) is pretty much straightforward – the wires are all there, VIDA/VDASH will see it as well. It only needs a properly configured DIM software and certain settings in the CEM (*). This kind of upgrade can also be done at a dealer, bit it’s a bit co$tly.
#2 the cars MY12- (and certain S60II/V60 MY11-) will accept the TFT DIM, again with the correctly configured SW and certain CEM settings changed too. Without these, most of you will see some “random” errors, TPMS faults, fuel indicator not working, completely dark DIM or the rest of the car completely confused. A pair of additional wires between OBD and DIM connector is required to see the gear selector position properly (). Certain ECM firmwares also provide Eco/Power indicator values, but the majority (*) don’t.
This is what the some of our competition achieved as well. Some of them just randomly tested and failed various units until a software match was found.
#3 The biggest challenge was to retrofit the TFT display into all older P3 (S80II, V70III, XC70III and older XC60 – pretty much all MY07-MY11 P3 cars) without any converter hardware, just using a software configuration (and the pair of wires, of course). It was a huge work, lot of development and testing, but Yes! we can do it.
The final testing is in progress. Next week few local guys will do the pre-final tests on their cars. Here’s the teaser – this is my lovely S80 V8 MY07 car:
We do plan to roll out the VDASH 2.0 extension that will enable to do the full conversion (not exactly sure if within two weeks as our marketing promises, the development is always behind).
Technically you will only need any type of TFT DIM (there’re two distinct HW versions) – both usable for any #1 #2 or #3 retrofit. Plus the AT or MT type of the DIM has to be matched with the car, that’s it. Well, of course V40/XC40 DIM type will not match the car mechanically, while electrically it would be pretty much okay. A pair of additional pins and wires. And a pair of good hands.
That’s for now. Hope you enjoyed the reading and soon you may enjoy the actual conversion. It will be available worldwide and online thru VDASH 2.0
Pavel (ok2ucx)
D5T5.com team
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(*) In order to change anything in CEM, it needs to be unlocked first. It’s a one-time process that can be accomplished using VDASH. It takes 12 hours in average, 24 hours the worst case. Both car and the PC has to be powered using chargers, the car consumes 15-20A, thus cheap Lidl charger cannot handle that job. You can pause the decoding at any time though, the decoding (unlocking) will resume from the last known point. The PC has to be on-line all the time, however it will not eat too much bandwidth (a 3G mobile connection is more than good enough).
(**) Official VIDA will never see DIM responding properly as it can only be diagnosed on HS CAN (and VIDA expects such retrofitted cars to have DIM on the original LS CAN connection).
The cars that will be converted thru VDASH will be put on an automatic white-list and VDASH will be able to 1. diagnose DIM (read/clear the DTC codes), 2. clear SRI, 3. set time thru OBD, well 4. to reprogram/update it too thru VDASH.
(***) In both #2 and #3 options the Eco/Power indicators may be mapped to a similar values in the car, with not exactly the original meaning, still meaningful. It might be reconfigured later, if the better values are found.