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4 X 4 OPTIONS:
Sprinter 4X4 High Range
Details & Technology
Vehicles specified with on-demand all-wheel drive are driven by the rear wheels much of the time. However, 4×2 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 approx. 110 mm on the front axle and by 80 mm on the rear axle (2500 variant). The angle of approach/departure and break-over angle increase accordingly.
“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
•24” Wading Depth
•28 degree approach angle & 27 degree departure angle
•25 degree break over (side to side) angle
4x4 Special Features:
• Grab Handles for easier entry (code T75)
•Special Front Bumper & Underride Protection (2500 Variants Only)
•Rear Fog Lamp is Integrated in the Bumper
• Improved traction, lateral stability and pulling power
•Improved tractive power on difficult road surfaces
•The increase in ride height also increases visibility
•The torque is split 65/35 (rear axle/front axle) to mimic typical RWD performance
4x4 System Operations
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 relevant wheel(s) and if required also reduces engine output until the handling condition is stable again.
The 4ETS system brakes the spinning wheels automatically with short pulses and, consequently, increases the drive torque at the wheels and thus offering good traction by the same amount.
The automatic brake application by the 4ETS has the same effect as up to three mechanical differential locks: the inter-axle lock, the rear axle lock and the front axle lock.
The transfer case is flange-mounted directly onto the main transmission, while the front-axle drive has been kept very compact. It has a lifetime oil fill and, like the additional front-axle drive shafts, requires no maintenance.
In 4×4 High Range the normal max speedup to 81mph can be reached. 4×4
Sprinter 4X4 Low Range
Details & Technology
The Sprinter with on-demand all-wheel drive and manually selectable reduction gear (i=1.4) generally acts in the same way as the Sprinter with on-demand all-wheel drive (Code ZG1).
In addition, the all-wheel-drive system has a reduction gear that can be engaged and disengaged. It is only possible to engage the reduction gear when the vehicle is at a standstill.
The reduction gear should only be engaged when needed as its use leads to a rise in fuel consumption.
An intermediate gear (off-road gear) in the transfer case reduces the gear ratio between the engine and the wheels by about 40% with a corresponding increase in torque at the wheels.
• Expanded operations in difficult terrain
•Allows particularly slow and sensitive driving }