Mercedes-Benz GL-Class: Safety notes - Operating safety - Introduction - Mercedes-Benz GL-Class Owner's ManualMercedes-Benz GL-Class: Safety notes

WARNING Work improperly carried out on electronic 
Work improperly carried out on electronic components and associated software could cause them to cease functioning. Because the vehicle's electronic components are interconnected, any modifications made may produce an undesired effect on other systems. Electronic malfunctions could seriously impair the operating safety of your vehicle.
Contact an authorized Mercedes-Benz Center for repairs or modifications to electronic components.
Other improper work or modifications on the vehicle could also have a negative impact on the operating safety of the vehicle.
Some safety systems only function when the engine is running. You should therefore never turn off the engine while driving.

WARNING Heavy blows against the vehicle underbody or 
Heavy blows against the vehicle underbody or tires/wheels may cause serious damage and impair the operating safety of your vehicle.
Such blows can be caused, for example, by running over an obstacle, road debris or a pothole.
If you feel a sudden significant vibration or ride disturbance, or you suspect that damage to your vehicle has occurred:
turn on your hazard warning flashers.
slow down carefully.
drive with caution to an area which is a safe distance from the road.
Inspect the vehicle underbody and tires/ wheels for possible damage. If the vehicle appears unsafe, have it towed to the nearest authorized Mercedes-Benz Center or other qualified maintenance or repair facility for further inspection or repairs.

    Qualified specialist workshop
    An authorized Mercedes-Benz Center is a qualified specialist workshop. It has the necessary specialist knowledge, tools and qualifications to correctly carry out the work required on your vehicle. ...

    See also:

    Heated and Ventilated Seats
    Heated and Cooled Seat Buttons Shown, Heated Seat Buttons Similar   If available, the buttons are on the center console. To operate, the engine must be running. : If available, press to h ...

    High-Beam On Light
    The high-beam on light comes on when the high-beam headlamps are in use. See Headlamp High/Low-Beam Changer  for more information. ...

    Global Positioning System (GPS)
    The navigation system determines the position of the vehicle by using satellite signals, various vehicle signals, and map data. At times, other interferences such as the satellite condition, road co ...