Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Adjustment, Consumption Calculation: Application
Adjustment can be used if the customer determines and complains about a deviation between the following values:
- Fuel consumption calculated by the on-board computer
- Fuel consumption determined on the basis of refuelling
These two values must be entered at the corresponding point during the adjustment procedure. The adjustment function then automatically calculates the correct correction factor and transfers it to the DDE control unit.
The correction factor can decrease or increase by a maximum of 10 %. If the newly calculated correction factor is outside these limits, the user will be given the option of setting the factor to the maximum permissible limit or not at all.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.