Important safety notes

WARNING Do not park this vehicle in areas where 
Do not park this vehicle in areas where combustible materials can come into contact with the hot exhaust system. Do not park the vehicle on dry grassland or harvested grain fields. Combustible materials, such as grass, hay or leaves could be ignited by the hot exhaust system and cause a vehicle fire.
Unintended vehicle movement can cause serious personal injury or damage to the vehicle or the vehicle drivetrain. To reduce such risks, always do the following before turning off the engine and leaving the vehicle:
keep your right foot on the brake pedal.
engage the parking brake.
shift the automatic transmission to park position P.
slowly release the brake pedal.
when parked on an incline, always turn the front wheels towards the road curb.
turn the SmartKey in the ignition lock to position 0 and remove the SmartKey from the ignition lock, or press the KEYLESS-GO Start/Stop button.
take the SmartKey with you and lock the vehicle when leaving.

    See also:

    Vehicle data, GL 550
    The data stated here refers specifically to a vehicle with standard equipment. Consult an authorized Mercedes-Benz Center for the data for all vehicle variants and trim levels. ...

    Warning and indicator lamps
      ...

    Comprehensive restraint system for the best possible occupant protection
    Combined with the front and rear deformation zones, the high-strength occupant cell forms an effective basis for occupant protection systems that include: adaptive, two-stage airbags for the dri ...