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Troubles / Problémy

A place to talk about whatever you want

288 Topics 1.0k Posts

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  • 12 Topics
    38 Posts
    V

    Money plus the problem equals the solution.

  • 78 Topics
    220 Posts
    T5 T6 SchnappiT

    @gamaz if this is still interesting for you. Your donor part should have a white backside (hardware gen. 1) and should come from a donor car with a non-VEA engine and automatic transmission. TFT DIMs with black backside (gen. 2&3)are not fully compatible with your car and might not work as expected.
    More info here

  • 114 Topics
    441 Posts
    T5 T6 SchnappiT

    @SKanev that looks slightly burned. A professional flush would be the way to go, but based on your specific shifting issues, I think your valve body needs a rebuild or replacement. I just had a talk with a retired Volvo tech, and his reply after describing your specific problem was short and simple: "get a new valve body, everything else is a waste of time and money". Your symptoms are most probably the result of worn out or even cracked valve bores in the valve body. This seems to be a known problem especially with Gen.1 TF8Xs like yours.
    If you're keen enough for this, you can also try to readjust your clutch control valves as described here but that is something I wouldn't do by myself.

  • 46 Topics
    142 Posts
    R

    UPDATE – SOLVED

    The problem is fixed. D5T5 support confirmed it was a VDASH glitch that prevented CEM configuration changes from being applied. After their fix (03.11.2026) everything works. Thank you, Pavel, and thanks to everyone who offered advice.

    For anyone with the same issue (P2, import car, trip computer still in mpg / °F):

    Charger connected, ignition position II, engine off. Car configuration → Others → Service interval → "User defined in DIM" → APPLY CHANGES. Detect vehicle again and check that "Current value in the car" really shows "User defined in DIM". Don't trust the green "All items are processed" alone. Only then, in DIM: Temperature units to C, Trip computer units l/100km (EU), DIM service interval (km / months).

    If DIM returns NEGATIVE [22] – Conditions not correct, the CEM still isn't set to user defined. If the value keeps reverting and SOFTWARE history shows every attempt as "CEM RESTORE", contact support – it's not your fault.

  • 36 Topics
    186 Posts
    T5 T6 SchnappiT

    @sizan the donor CCM needs to have the same hardware number and buttons as your current CCM, and you need to clone the software from your old module to the donor part. Additonally you might need to run some diagnostic commands like LIN discovery or damper motor adjustment, if the swapped in part doesn't work as expected. This might require VIDA as Vdash still lacks certain diagnostic commands.

  • 2 Topics
    3 Posts
    J

    Transmission fluid change and refill

All for your Volvo