VDASH Guide
SPA and CMA Mileage Manipulation
Important information about mileage synchronization when replacing the instrument cluster (DIM) in Volvo SPA and CMA vehicles.
Mileage synchronization
Custom mileage manipulation of your Volvo SPA/CMA
In new Volvo cars on the SPA and CMA platforms, advanced mileage synchronization is implemented across the entire car (all modules). Therefore, if someone has an idea to swap the instrument cluster (DIM) for another one, you have to make sure the cluster has 100% lower mileage on it than the rest of the car. Otherwise, the rest of the car will be synchronized with the higher mileage from the donor cluster (DIM).
Example 1
- Volvo XC90 2019 has mileage 100,000 km
- Spare DIM has mileage 120,000 km
If you connect the spare DIM into the car, the car will take over the mileage from the spare DIM and it will be synchronized to 120,000 km. Even if you connect back the old DIM, the old DIM (with mileage 100,000 km) will take over the mileage from the car and will show 120,000 km. After this, you will have a car with 120,000 km and both DIMs will also have 120,000 km.
The result of this example is that your car will have manipulated mileage (increased) by +20,000 km, and this process is not reversible.
Example 2
- Volvo XC40 2023 has mileage 50,000 km
- Spare DIM has mileage 30,000 km
If you connect the spare DIM into the car, the DIM will take over the mileage from the car and will synchronize to 50,000 km.
In this case, the car was not manipulated at all; only the DIM took over the mileage from the car.
Important warning
Unknown spare DIM mileage
If you do not know the actual mileage of the spare DIM (from a scrapyard, auction, etc.), avoid connecting it to the car, because your car can be manipulated to a higher mileage with no way back!
Free VDASH check
Check mileage manipulation with VDASH
You can check with VDASH if your car was manipulated in the past for free.