Mercedes-Benz GL-Class 2015 - Manual (Page 75)

R a vehicle traveling in front on a different line
relative to the center of your vehicle
R
new vehicles or after the COLLISION PRE-
VENTION ASSIST system has been serv-
iced
Observe the notes in the section on break-
ing-in (
Y
page 166).
Following damage to the front end of the vehi-
cle, have the configuration and operation of
the radar sensor checked at a qualified spe-
cialist workshop. This also applies to colli-
sions at low speeds where there is no visible
damage to the front of the vehicle.
ESP ® (Electronic Stability Program)
General notes
i Observe the "Important safety notes" sec-
tion (
Y
page 68).
ESP ® monitors driving stability and traction,
i.e. power transmission between the tires and
the road surface.
If ESP
® detects that the vehicle is deviating
from the direction desired by the driver, one
or more wheels are braked to stabilize the
vehicle. The engine output is also modified to
keep the vehicle on the desired course within
physical limits. ESP ® assists the driver when
pulling away on wet or slippery roads. ESP ®
can also stabilize the vehicle during braking.
ETS/4ETS (Electronic Traction System)
4ETS traction control is part of ESP ® .
Traction control brakes the drive wheels indi-
vidually if they spin. This enables you to pull
away and accelerate on slippery surfaces, for
example if the road surface is slippery on one
side. In addition, more drive torque is trans-
ferred to the wheel or wheels with traction.
Traction control remains active, even if you
deactivate ESP ® .
In appropriate driving situations, activate the
off-road program (
Y
page 259).
Off-road 4ETS (Electronic Traction Sys-
tem)
A 4ETS system specifically suited to off-road
terrain is activated automatically once the off-
road program is activated (
Y
page 259).
Important safety notes
G WARNING
If ESP ® is malfunctioning, ESP ® is unable to
stabilize the vehicle. Additionally, further driv-
ing safety systems are deactivated. This
increases the risk of skidding and an accident.
Drive on carefully. Have ESP
® checked at a
qualified specialist workshop.
! Only operate the vehicle for a maximum of
ten seconds on a brake test dynamometer.
Switch off the ignition.
Application of the brakes by ESP
® may oth-
erwise destroy the brake system.
! A function or performance test should
only be carried out on a two-axle dyna-
mometer. Before you operate the vehicle
on such a dynamometer, please consult a
qualified workshop. You could otherwise
damage the drive train or the brake system.
ESP ® is deactivated if the å warning lamp
in the instrument cluster lights up continu-
ously when the engine is running.
If the ÷ warning lamp and the å warn-
ing lamp are lit continuously, ESP ® is not
available due to a malfunction.
Observe the information on warning lamps
(
Y
page 331) and display messages which
may be shown in the instrument cluster
(
Y
page 293).
i Only use wheels with the recommended
tire sizes. Only then will ESP ® function
properly.
Driving safety systems
73
Saf
ety
Z