Safety and security – Mercedes-Benz M-Class 2009 Owners Manual User Manual
Page 80
Driving safety systems
78
The ESP
®
warning lamp
v
in the
instrument cluster flashes when the ESP
®
is
engaged.
Never switch off the ESP
®
when you see the
ESP
®
warning lamp v flashing in the
instrument cluster. In this case proceed as
follows:
R
When driving off, apply as little throttle
as possible.
R
While driving, ease up on the accelerator
pedal.
R
Adapt your speed and driving style to the
prevailing road conditions.
Failure to observe these guidelines could
cause the vehicle to skid. The ESP
®
cannot
prevent accidents resulting from excessive
speed.
!
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.
!
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. Such testing should be no
longer than 10 seconds.
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.
For more information, see the “Practical
hints” section (
Electronic Traction System (4-ETS)
The 4-ETS (four-wheel Electronic Traction
System) are components of the ESP
®
. The
4-ETS improves the vehicle’s ability to utilize
available traction, especially under slippery
road conditions by applying the brakes to a
spinning wheel. In addition, more power is
transferred to the wheel(s) with traction.
When you switch off the ESP
®
, the 4-ETS is
still enabled.
X
If conditions require, switch on the off-road
driving program (
Off-road 4-ETS
With the off-road driving program switched on
(
page 169), the 4-ETS designed for off-road
use is activated automatically.
Switching off the ESP
®
The ESP
®
should not be switched off during
normal driving other than in the
circumstances described below. Disabling
Safety and security