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 system when the brakes are applied hard
(e.g. when
driving downhill). This would impair braking
efficiency.
You should have the brake fluid renewed at
regular intervals. The brake fluid change
intervals can be found in the Service Booklet.
Only use brake fluid approved by Mercedes- Benz. Information about approved brake fluids can be obtained from any authorized Mercedes-Benz Center.
See also:
Preparing the vehicle
WARNING
The wheel and tire size of the emergency
spare wheel/spare wheel may differ to that of
the damaged wheel. When using an
emergency spare wheel/spare wheel the
handling characte ...
4MATIC: high-performance all-wheel-drive system with sophisticated control
systems
The 4MATIC powertrain at the heart of the Mercedes-Benz GLK-Class is one of
the most capable all-wheel-drive systems on the market. The driving dynamics
systems ESP®, ASR and 4ETS are superbly har ...
Towing a vehicle with both axles on the ground
When having your vehicle towed, observe the
important safety notes.
WARNING
The power assistance for the steering and the
brake force booster do not work when the
engine is not running. You ...