Four Wheel Electronic Traction System (4-Ets) - Mercedes-Benz ML 320 Operator's Manual

Four-wheel electronic traction system (4-ETS+)
With the key in steering lock position 2, the
warning lamp comes on and should go out when
the engine is running.
The 4-ETS improves 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.
The 4-ETS warning lamp v , located in the
speedometer dial, starts to flash at any vehicle speed, as
soon as the tires lose traction and the wheels begin to
spin.
Important!
If the 4-ETS warning lamp v flashes:
• during take-off, apply as little throttle as possible,
• while driving, ease up on the accelerator.
Adapt your speed and driving to the prevailing road
conditions.
Driving systems
Instruments
Operation
and controls
164
Instrument
Driving
cluster display
4-ETS+ Control
If the yellow 4-ETS malfunction indicator lamp {
comes on while the 4-ETS warning lamp v flashes,
the electronic traction system is being switched off
temporarily to prevent overheating of the drive wheel
brakes.
If the 4-ETS malfunction indicator lamp { comes on
with the engine running, a malfunction has been
detected.
Have the 4-ETS checked at your authorized
Mercedes-Benz Light Truck Center as soon as possible.
With the ABS malfunctioning, the 4-ETS is also
switched off.
Caution!
If the vehicle is towed with the front axle raised (see
towing the vehicle on page 209), or when testing the
parking brake on a brake test dynamometer, the engine
must be shut off (key in steering lock position 0 or 1).
Otherwise, the electronic traction system will
immediately be engaged and will apply the rear wheel
brakes.
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