Sprinter 906
ZG1
4x4 – High Range
Details & Technology
Vehicles specified with on-demand all-wheel drive are driven by the rear wheels much of the
time. However, 4x2 mode may not provide enough traction at the driven wheels when
accelerating, driving uphill or driving on difficult surfaces (e.g. snow, ice, gravel). Selecting
front-wheel drive in addition to rear-wheel drive improves the Sprinter's traction, lateral
stability and pulling power.
The selectable all-wheel drive can be engaged and disengaged while stationary or up to a
speed of 6mph (10 km/h) with a rocker switch on the instrument panel. The red control lamp
in the rocker switch lights up when all-wheel drive is engaged.
The all-wheel-drive system increases the ride height of the vehicle by some 110 mm on the
front axle and by some 80 mm on the rear axle. The angle of approach/departure and
breakover angle increase accordingly. Due to the higher ride height, the rear fog lamp is fitted
in the bumper on the All Models. The rear fog lamp in the standard-fit tail-light unit therefore
is inoperative. In addition, exterior mirrors without indicators (Code FU5) and indicator lamps
in the front wings (Code L44) are installed
"ADAPTIVE ESP" in all-wheel-drive mode is expanded by the electronic traction system (4ETS)
and includes additional electronic aids as part of the standard scope of delivery. The included
functions are the anti-lock braking system (ABS), acceleration skid control (ASR), electronic
brake force distribution (EBD) and hydraulic Brake Assist (BAS), and Hill-Start Assist (Code
E07) can be ordered as an optional extra. Numerous sensors are installed in the vehicle to
make ADAPTIVE ESP/4ETS fully functional. They send their signals directly to the central
control unit. The sensors measure the following values among others:
steering angle, position of the pedals, engine speed
wheel speed, rotational movement around the vertical axis (yaw moment) and
lateral acceleration
The sensors detect the moment the vehicle reaches an unstable handling condition, the
signals are transmitted and the system intervenes in the handling situation. It brakes the
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