(11-29-2023, 11:10 AM)Sodertalje Wrote: Warning! Please be careful and double-check. If the donor display has a higher mileage than your current mileage, the higher mileage will be programmed in your car. There is NO WAY BACK.
Want to highlight Södertäljes comment as I learnt this the hard way today.
Original 8" speedo kilometers: ~300000km
First 12" speedo kilometers: ~357000km
Installed the first speedo as it was advertised with far less kilometers, didn't start the car, reverted to original - all fine displaying the original/correct kilometers.
Returned the first 12" speedo to the seller with 357000km as it was advertised as somewhere in low 200000km.
Second 12" speedo kilometers:
Upon installation the second speedo showed donor vehicles lower kilometers, ~101000km.
When starting the car went to ~357000km.
So this means that Södertäljes comment is correct, if you connect a speedo with higher kilometers, even if you revert to the original speedo without starting the car - its stored somewhere and will be added to a new speedo or module with lower kilometers. Wow, thanks Volvo.
Surely stuck now with the new kilometers adding 57000km to my car.
At the acceptance stage while writing this.
Hope this helps someone.