XC90 SPA 2016 UK Headlight swap to EU Help
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Most probably incompatible/wrong HCM. What are the part numbers of original UK and the new headlights? And don't mention that you use orbit in the official vdash forum. That's a big red flag!
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Thank you for the heads up about not mentioning the software (can't edit my post)
I ised my original modules from the UK lights as the replacement headlights did not come with any. Original UK left side part number is 31468665 XC90 LED LHT LHS
Volvo recommended EU replacement part number is 31677038 XC90 LED RHT LHS
Original UK Right Hand side (drivers side) part number is 31468584 XC90 LED LHT RHS
Recommended EU replacement part number is 31677039 XC90 LED RHT RHS
If you could help in any way I would be so grateful.
Thank you -
@T5-T6-Schnappi Thank you for the heads up about not mentioning the software (can't edit my post)
I used my original modules from the UK lights as the replacement headlights did not come with any. Original UK left side part number is 31468665 XC90 LED LHT LHS
Volvo recommended EU replacement part number is 31677038 XC90 LED RHT LHS
Original UK Right Hand side (drivers side) part number is 31468584 XC90 LED LHT RHS
Recommended EU replacement part number is 31677039 XC90 LED RHT RHS
If you could help in any way I would be so grateful.
Thank you -
Hey guys, @T5-T6-Schnappi I think I might have the same issue, could you help me with this?
I receive:
HIRL
Sequence Counter Invalid
HIRL
Missing Message
HIRR
Sequence Counter Invalid
HIRR
Missing Message
after moving my original Signal Drive Units (all 4 modules)
(31446806)
to EU headlamps
31353153 / 31446688.Does this indicateincompatible firmware, module programming required,
or incompatible Signal Drive Units?Can VDASH reprogram these modules?
I did conversion from US to EU which I thought could convert headlights as well but unfortunately not.... which means I kinda "lost" lots of euros on that worthless action I did.
Thanks in advance!
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@SOpEL the modules needed for your EU headlights have the part numbers 31395943 (pos. 2), 31395944 (pos. 3), 31395945 (pos. 4), and maybe also 31395946 (pos. 5).
Without any guarantee that this is still correct.
Vdash can't perform software reloads/updates or configure headlights on SPAs. That's my last state of knowledge.
You might be able to clone the HCM software from your old modules with Vdash, but I can't tell you if this will solve your problems.
The software seems to be the same on all HCMs. At least the software number for a HCM reload is always 31472823 in my catalogue. -
Thank you very much for your help. Before buying any new modules, I removed the headlight and checked the part numbers of the modules I transferred from my original US headlights.
I currently have:
HIR: 31446806
FFM: 31468410
LCS: 31395946I also tested two different DRL LED boards (9 LED and 10 LED versions), and neither of them worked in the EU headlight.
I also did an important test: I reinstalled my original US headlight with these modules and everything works correctly, including the DRL/Thor Hammer and front indicator. So the modules themselves seem to be functional.
From what I found, 31446806 appears to be a newer replacement/supersession for one of the module numbers you listed.
Do you think my current modules should work with the EU headlights after the correct HCM software reload/initialization?
Or do I actually need to replace them with the older part numbers you listed (31395943 / 31395944 / 31395945 / 31395946) and then perform a software reload?
I'm trying to avoid buying another complete set of modules if my current hardware is already compatible and only needs the correct software.
Thanks again!
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@SOpEL Volvo lists specific modules for specific headlight variants. So it's not only a matter of software. If you can open this link you will find several variants of headlights, and several different modules which are only compatible with specific headlight variants. You will need to source modules that are compatible with your headlights.
