Mercedes-Benz GL-Class: Maintenance - Maintenance and care - Mercedes-Benz GL-Class Owner's ManualMercedes-Benz GL-Class: Maintenance

Brake fluid level
If you notice that the brake fluid level in the brake fluid reservoir has fallen to the MIN mark or less, check the brake system immediately for leaks. Also check the thickness of the brake lini ...

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Head Restraint Adjustment
Do not drive until the head restraints for all occupants are installed and adjusted properly. To achieve a comfortable seating position, change the seatback recline angle as little as necessary w ...

Unlocking the driver's door(mechanical key)
If the vehicle can no longer be unlocked with the SmartKey, use the mechanical key. If you use the mechanical key to unlock and open the driver's door, the anti-theft alarm system will be trigge ...

Low fuel warning (Amber)
Illuminates when the remaining fuel reaches a minimum of 3 U.S gallons (12 liters), giving an approximate range of 50 miles (80 km). Refuel at the earliest opportunity. ...