Notes for Service: Guard
If the temperature of the coolant or of the engine oil becomes excessive during engine operation, certain functions in the vehicle are influenced in such a way that the engine cooling has more energy available. The measures are divided into 2 operating modes:
- Guard
- Coolant temperature between 117 °C and 124 °C
- Engine oil temperature between 150 °C and 157 °C.
Measure: power reduction of the climate control (up to 100 %) and of the engine.
- Emergency
- Coolant temperature between 125 °C and 129 °C
- Engine oil temperature between 158 °C and 163 °C.
Measure: power reduction of the engine (up to approx. 90%).
NOTE:
Technical modifications may be introduced at any time. Observe model-specific service information and any applicable service bulletins for updates or changes.