Maintenance - Mercedes-Benz E-Class Coupe Operator's Manual

You have to depress the brake pedal more
firmly. Maintain a greater distance from the
vehicle in front.
After driving on a wet road or having the vehicle
washed, brake firmly while paying attention to
the traffic conditions. This will warm up the
brake discs, thereby drying them more quickly
and protecting them against corrosion.
Limited braking performance on salt-
treated roads
If you drive on salted roads, a layer of salt resi-
due may form on the brake discs and brake
pads. This can result in a significantly longer
braking distance.
In order to prevent any salt build-up, apply the
R
brakes occasionally while paying attention to
the traffic conditions.
Carefully depress the brake pedal and the
R
beginning and end of a journey.
Maintain a greater distance to the vehicle
R
ahead.
Servicing the brakes
!
The brake fluid level may be too low, if:
if the red brake warning lamp lights up in
R
the instrument cluster and
you hear a warning tone while the engine is
R
running
Observe additional warning messages in the
multifunction display.
The brake fluid level may be too low due to
brake pad wear or leaking brake lines.
Have the brake system checked immediately.
Consult a qualified specialist workshop to
arrange this.
!
Vehicles with 4MATIC: function or per-
formance tests may only be carried out on a 2-
axle dynamometer. If you wish to operate the
vehicle on such a dynamometer, please con-
sult a qualified specialist workshop in
advance. You could otherwise damage the
drive train or the brake system.
!
Vehicles with 4MATIC: as the ESP
tem operates automatically, the engine and
the ignition must be switched off (SmartKey in
position 0 or 1 in the ignition lock or Start/
Stop button in position 0 or 1) while the park-
ing brake is being tested on a brake dyna-
mometer.
Braking maneuvers triggered automatically
®
by ESP may seriously damage the brake sys-
tem.
!
Vehicles with 4MATIC: as the ESP
tem operates automatically, the engine and
the ignition system must be switched off
(SmartKey in position 0 or 1 in the ignition
lock or Start/Stop button in position 0 or 1)
when:
testing the parking brake on a brake dyna-
R
mometer.
you intend to have the vehicle towed with
R
the front axle raised.
Braking maneuvers triggered automatically
®
by ESP may seriously damage the brake sys-
tem.
All checks and maintenance work on the brake
system must be carried out at a qualified spe-
cialist workshop.
Have brake pads installed and brake fluid
replaced at a qualified specialist workshop.
If the brake system has only been subject to
moderate loads, you should test the functional-
ity of your brakes at regular intervals. To do so,
press firmly on the brake pedal when driving at a
high speed. This improves the grip of the brake
pads.
You can find a description of Brake Assist (BAS)
on ( page 63) or of BAS PLUS with Cross-Traffic
Y
Assist on (
Y
The braking characteristics of the vehicle can be
seriously impaired if:
brake pads other than those recommended
R
are installed
the recommended brake fluid is not used
R
Safe braking can no longer be guaranteed.
Driving on wet roads
Hydroplaning
If water has accumulated to a certain depth on
®
sys-
the road surface, there is a danger of hydro-
planing occurring, even if:
you drive at low speeds.
R
the tires have adequate tread depth.
R
Driving tips
page 63).
143
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sys-
Z