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Because the ESC operates automatically,
the engine and ignition must be shut off
(SmartKey in starter switch position 0 or
1 or KEYLESS-GO start/stop button in
position 0 or 1) when the electronic parking
brake is being tested on a brake test
dynamometer.
Active braking action through the ESC may
otherwise seriously damage the brake
system which is not covered by the
Mercedes-Benz Limited Warranty.
!
Vehicles without 4MATIC:
Because the ESC operates automatically,
the engine and ignition must be shut off
(SmartKey in starter switch position 0 or
1 or KEYLESS-GO start/stop button in
position 0 or 1) when the electronic parking
brake is being tested on a brake test
dynamometer or when the vehicle is being
towed with one axle raised.
Active braking action through the ESC may
otherwise seriously damage the brake
system which is not covered by the
Mercedes-Benz Limited Warranty.
!
The ESC will only function properly if you
use wheels of the recommended tire size
as specified in the “Technical data” section
of this Operator’s Manual.
i
The DISTRONIC PLUS and cruise control
switch off automatically when the ESC
engages.
Electronic Traction System
(ETS/4-ETS)
G
Observe Safety notes, see page 63.
The ETS (Electronic Traction System) and
4-ETS (four-wheel Electronic Traction
System, vehicles with 4MATIC only) are
components of the ESC. The ETS/4-ETS
improves the vehicle’s ability to utilize
available traction, especially under slippery
road conditions by applying the brakes to a
spinning wheel. Vehicles with 4MATIC also
transfer more power to the wheel(s) with
traction.
When you switch off the ESC, the
ETS/4-ETS is still enabled.
Switching off the ESC
Switching off the ESC (except S 63 AMG)
G
Warning!
The ESC should not be switched off during
normal driving other than in the
circumstances described below. Disabling
the system will reduce vehicle stability in
driving maneuvers.
Do not switch off the ESC when a spare wheel
is mounted.
To improve the vehicle’s traction, switch off
the ESC. This allows the drive wheels to spin
and thus cut into surfaces for better grip, for
example
R
when driving with snow chains
R
in deep snow
R
in sand or gravel
G
Warning!
Switch on the ESC immediately if the
aforementioned circumstances do not apply
anymore. Otherwise the ESC will not stabilize
the vehicle when it is starting to skid or a
wheel is spinning.
When you switch off the ESC,
R
the ESC does not stabilize the vehicle
R
the engine output is not limited, which
allows the drive wheels to spin and thus cut
into surfaces for better grip
R
the ETS/4-ETS will still apply the brakes to
a spinning wheel
R
the ESC continues to operate when you are
braking
Driving safety systems
67
Safety and security
221_AKB; 6; 20, en-US
d2ugruen, Version: 2.11.8.1
2009-09-24T13:28:17+02:00 - Seite 67
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