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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Cleaning the Components
Use care when touching or cleaning the components such as the DVD player or the discs. Do not use DVD lens cleaners for DVD players because the lens of the DVD optics can become contaminated by lub ...

Gasoline
Fuel grade You should only refuel with unleaded premium-grade gasoline as this avoids damaging the catalytic converter. If engine running problems are apparent, have the cause checked immedia ...

Drinking alcohol/drugs and driving
WARNING Never drive under the influence of alcohol or drugs. Alcohol in the bloodstream reduces coordination, delays reaction time and impairs judgement. Driving after drinking alcohol incr ...