4-Ets - Mercedes-Benz GL450 Operator's Manual

Safety and Security
Driving safety systems

4-ETS

The 4-Electronic Traction System (4-ETS)
improves the vehicle's ability to utilize
available traction, especially under
slippery road conditions. The brakes are
applied to the spinning wheel and power is
transferred to the wheel(s) with traction.
® warning lamp v in the instru-
The ESP
ment cluster, starts to flash at any vehicle
speed, as soon as a tire loses traction and
the wheel begins to spin.
i
If conditions require, switch on off-road
driving program ( page 275) or LOW RANGE*
mode ( page 199).
Warning!
®
warning lamp v
When you see ESP
flashing in the instrument cluster, then pro-
ceed as follows:
While driving off, apply as little throttle
as possible.
104
While driving, ease up on the accelera-
tor.
Adapt your speed and driving style to
the prevailing road conditions.
Failure to observe these guidelines could
cause the vehicle to skid.
The 4-ETS cannot prevent accidents resul-
ting from excessive speed.
!
Operational or performance test must only
be conducted on a two-axle dynamometer. If
such tests are necessary, contact an authorized
Mercedes-Benz Light Truck Center. You could
otherwise seriously damage the brake system or
the transfer case which is not covered by the
Mercedes-Benz Limited Warranty.
G
!
Because the ESP
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 testing the brakes on a
brake test dynamometer and such testing should
be no longer than 10 seconds.
Active braking action through the ESP
otherwise seriously damage the brake system
which is not covered by the Mercedes-Benz
Limited Warranty.
i
comes on while driving, the 4-ETS is being
switched off temporarily to prevent overheating
of the drive wheel brakes. In addition, the
message ESP inoperative See Operator's
Manual appears in the multifunction display.
For more information, see the "Practical
hints" section ( page 430) and
( page 444).
Off-road - 4-ETS
With the off-road driving program switched
on ( page 275), or with the transmission
®
in LOW RANGE* mode ( page 199), the
operates automatically,
4-ETS designed for off-road use is auto-
matically activated.
®
warning lamp v
If the yellow ESP
®
may