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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 vehi-
cle 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 transfer-
red to the wheel or wheels with traction.
Traction control remains active, even if you
deactivate ESP
®
.
In appropriate driving situations, activate the
offroad program:
X
Vehicles without the Offroad Engineering
package (Y page 216)
X
Vehicles with the Off-Road Engineering pack-
age (Y page 217)
Off-road 4ETS (Electronic Traction Sys-
tem)
An ETS system specifically suited to off-road
terrain is activated automatically once the off-
road program is activated:
R
Vehicles without the Offroad Engineering
package (Y page 216)
R
Vehicles with the Off-Road Engineering pack-
age (Y page 217)
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 dynamometer.
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 only deactivated if the å warning
lamp is lit continuously.
If the ÷ warning lamp and the å warning
lamp are lit continuously, ESP
®
is not available
due to a malfunction.
Observe the information on warning lamps
(Y page 279) and display messages which may
be shown in the instrument cluster
(Y page 246).
i
Only use wheels with the recommended tire
sizes. Only then will ESP
®
function properly.
Characteristics of ESP
®
General information
If the ÷ ESP warning lamp goes out before
beginning the journey, ESP
®
is automatically
active.
If ESP
®
intervenes, the ÷ ESP
®
warning lamp
flashes in the instrument cluster.
If ESP
®
intervenes:
X
Do not deactivate ESP
®
under any circum-
stances.
X
Only depress the accelerator pedal as far as
necessary when pulling away.
X
Adapt your driving style to suit the prevailing
road and weather conditions.
ECO start/stop function
The ECO start/stop function switches the
engine off automatically when the vehicle stops
moving. The engine starts automatically when
the driver wants to pull away again. ESP
®
remains in its previously selected status, e.g. if
ESP
®
was deactivated before the engine was
automatically switched off.
70
Driving safety systems
Safety
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