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:
Imperial/metric/mixed display
The trip computer readings can be changed between metric, imperial and mixed
units in the Trip Computer menu of the message center. See 55, INTERACTIVE CONTROLS.
Note: Temperature display can be ch ...
Front
The front seats can be warmed by built-in
heaters. The switches located on the
instrument panel can be operated independently
of each other.
1. Start the engine.
2. Select heat range.
...
Instrument Panel Illumination Control
The instrument panel brightness knob is located on the instrument panel to the
left of the steering column.
(Instrument Panel Brightness): Push
the knob in all the way until it extends out and ...






