Instrument cluster swapout help

[ezhacker1]

I have both European and UK digital clusters, im fine with the kilometers only European one, but iv been toying with merging the two, and have miles (albeit, the speedometer section will be on the right of the tachometer)

[nodi]

Hi all, sorry to revive this old thread, but I'm facing exactly the same issues as the original poster, so I thought I'd give it a go...

Originally Posted by ezhacker1

I have both European and UK digital clusters, im fine with the kilometers only European one, but iv been toying with merging the two, and have miles (albeit, the speedometer section will be on the right of the tachometer)

ezhacker1, how did you go about merging the clusters? Are these analog clusters? [edit - cancel that question, you said they're digital]

I have to convert my Yaris to MPH, since unfortunately the instrument cluster is one of those digital LHD European ones that don't have the km/h <-> mph switching option.

I bought a digital UK RHD cluster and I tried swapping over the control board (that small PCB sandwiched onto the big main one, with the µC / eeprom on it). It worked, sort of, the status indicators etc. worked fine, but the digital speed / RPM display sections were totally garbled. I'm guessing the routing to the actual VFD is different (the VFD is also mirrored, no chance of swapping those).

I suppose I could simply fit the entire RHD cluster in my car, but firstly I'd then have to extend the connector wires, since the connectors are also mirrored - a tedious task - and secondly that would make reading the speed from the driver's seat quite difficult. I wouldn't mind that so much, but the MOT tester probably would.

Any pointers on how to go about this would be greatly appreciated.

I would also be perfectly happy with an analog cluster, even one that is km/h only (as on analog ones you can simply apply an adhesive overlay for mph). Just not sure if there's one available in Europe that actually fits my Yaris.

Cheers

[nodi]

Have to bump the thread again ...

Maybe someone has already tried swapping the control boards between otherwise identical LHD and RHD clusters (83800-0D660-D and 83800-0D650-D) and can confirm that the pinout / PCB routing is different? I have a slight suspicion that the garbled display might have been due to the flex ribbon cable connecting the VFD being improperly mounted.

Also, does anybody know if an analog cluster with part number 83800-0DG30 is compatible with this Yaris:

VNKKL923.. SCP90L-CHMGKW 11/2005 - 10/2008 SCP90 SOL FRP LHD 2SZFE MTM 5F 5D


Many thanks!

[nodi]

For the sake of completeness and in case someone faces that same set of problems:

Control boards from digital RHD and LHD clusters are NOT compatible. The PCBs are completely identical, and they will mechanically fit in both LHD and RHD clusters and thus can be swapped between them. However the firmware is different beyond just computing speed and mileage in MPH or km/h - the VFD component for speed and RPM display (basically everything you see enlarged by the mirror) has a different pin out, and the control board firmware takes that into account. I assume the controllers on that board to be OTP, so no chance of reprogramming even if one were to re-engineer the firmware.

Good job the RHD instrument I bought to try this out on was old and came in under £20. Maybe I can now flog it off on ebay for £5 or something.

The analog cluster 83800-0DG30 on the other hand works just fine in said car. Pinout for the vital indicator LEDs seems to be compatible.