Fault elimination measures
- Check urea/water mixture quality
- Remedy all SCR system faults
- Completely top up the SCR active tank, check the filling level using the diagnosis system, if applicable, activate SCR top-up identification using the corresponding service function
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NOTE: reset long-term adaptation. Carry out the service function "SCR adjustments and adaptations". Select the menu item "Diesel exhaust fluid changed, reset wrong media. (long-term adaptation factor)" in the service function.
- Carry out a conditioning run with the following driving profile:
- If the residual running distance is less than 90 km (55 miles). the residual running distance can be extended once with the service function SCR reset.
- Drive for one hour at constant speed with phases of slight engine traction and at a speed of approx. 70 - 90 km/h.
- If conversion of the nitrogen oxide exhaust gases can be performed successfully, the Check Control message on the instrument cluster goes out. The warning and shutdown scenario faults have been remedied and can then be deleted.
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NOTE: The driving time is one hour, both nitrogen oxide sensors must be enabled. Only then is a system check performed. The enabling can be checked with the diagnosis system. Depending on the exhaust temperature, the nitrogen oxide sensors are enabled within 15-35 minutes.
- Delete fault memory with the diagnosis system.