Mercedes-Benz GL-Class: Checking and adding other serviceproducts - Engine compartment - Maintenance and care - Mercedes-Benz GL-Class Owner's ManualMercedes-Benz GL-Class: Checking and adding other serviceproducts

Adding engine oil
Environmental note When adding oil, take care not to spill any. If oil enters the soil or waterways, it is harmful to the environment. WARNING   If engine oil comes into contact with ho ...

Checking the coolant level
Only check the coolant level when the vehicle is on a level surface and the engine has cooled down. ► Turn the SmartKey to position 2 in the ignition lock. On vehicles with KEYLESS-GO, ...

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Power steering fluid
Check the fluid level in the reservoir. The fluid level should be checked using the HOT range (1 : HOT MAX., 2 : HOT MIN.). at fluid temperatures of 122 to 1768F (50 to 808C) or using the CO ...

Driver override options
Hill Descent Control (HDC) is automatically engaged for some terrain response programs. If required, HDC can be deselected or engaged independently of terrain response. The HDC status will be dis ...

Air quality sensor
Press once to activate air recirculation. Press again to activate automatic air recirculation. In automatic mode, air recirculation is regulated to achieve optimum air conditioning performance. ...