Mercedes-Benz C-Class 2010 Owners Manual - Manual (Page 65)

! Vehicles with 4MATIC:
Only conduct operational or performance
tests on a two-axle dynamometer. If such
tests are necessary, contact an authorized
Mercedes-Benz Center. You could
otherwise seriously damage the brake
system or the transfer case which is not
covered by the Mercedes-Benz Limited
Warranty.
! Vehicles with 4MATIC:
Because the ESP ® 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 parking brake is
being tested on a brake test dynamometer.
Active braking action through the ESP
®
may otherwise seriously damage the brake
system which is not covered by the
Mercedes-Benz Limited Warranty.
! Vehicles without 4MATIC:
Because the ESP ® 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 parking brake is
being tested on a brake test dynamometer
or the vehicle is being towed with the front
axle raised.
Active braking action through the ESP
®
may otherwise seriously damage the brake
system which is not covered by the
Mercedes-Benz Limited Warranty.
! The ESP ® 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 cruise control switches off
automatically when the ESP ® engages.
Electronic Traction System
(ETS/4-ETS)
G Observe Safety notes, see page 60.
The ETS (Electronic Traction System) and
4-ETS (four-wheel Electronic Traction
System, vehicles with 4MATIC only) are
components of the ESP
® . 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 ESP
® , the
ETS/4-ETS is still enabled.
Switching the ESP ® off or on (except
C 63 AMG)
G Warning!
The ESP ® 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 ESP
® when a spare
wheel is mounted.
To improve the vehicle’s traction, switch off
the ESP
® . 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 ESP ® immediately if the
aforementioned circumstances do not apply
anymore. Otherwise the ESP
® will not
stabilize the vehicle when it is starting to skid
or a wheel is spinning.
Driving safety systems
63
Safety and security
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