Mercedes-Benz GL-Class: Refrigerant of the air-conditioningsystem
The air-conditioning system is filled with R134a refrigerant and a special PAG lubricant.
Never use refrigerant R 12 (CFC) or
mineral lubricants. Otherwise, you could
damage the air-conditioning system.
Engine oil viscosity
Viscosity describes the flow characteristics
of a fluid. If an engine oil has a high viscosity,
this means that it is thick; a low viscosity
means that it is thin.
Select an engine oil with an S ...
Brake fluid
WARNING
The brake fluid constantly absorbs moisture
from the air; this lowers its boiling point.
If the boiling point of the brake fluid is too low,
vapor pockets may form in the brake ...
See also:
Checking the brake fluid level
WARNING
Brake fluid is highly toxic - keep containers sealed and out of the reach of
children. If accidental consumption of fluid is suspected, seek medical attention
immediately.
If the fl ...
Wheel changing
1. Read and observe the warnings in Wheel changing safety.
2. Before raising the vehicle, use the wheel nut brace to slacken the wheel nuts
half a turn counter-clockwise.
3. Position the jack unde ...
Collision warning
If a vehicle is detected in the monitoring range
of Blind Spot Assist and you switch on the turn
signal, a double warning tone sounds. Red
warning lamp 1 flashes. If the turn signal
remains on, de ...






