Every 12 months on A6 models the OEL message should light up on the service screen.
Every 30,000 km on A6 models, the In1 message should light up on the service screen.
Every 60,000 km on A6 models, the In1 message should light up on the service screen.
Every 2 years on A6 models, the In2 message should light up on the service screen.
Regular performance of all necessary maintenance operations will ensure long and reliable operation of the engine. If the quality of engine operation has deteriorated, the following operations must be performed.
Primary checks:
- clean, inspect and test the battery;
- check oil and coolant levels;
- check the condition and tension of the drive belt;
- check the condition of the air filter and replace it if necessary;
- replace fuel filter;
- check the condition of all hoses and inspect them for leaks.
If the above steps are not effective, please perform the following checks.
Secondary checks:
- check the battery charging system;
- check the preheating system;
- check the power supply system.