Dsr (Downhill Speed Regulation) - Mercedes-Benz Sprinter Operating Instructions Manual

126 Driving and parking
To engage/disengage: press the upper sec‐
#
tion of switch 1.
The indicator lamp in switch
the all-wheel drive is engaged or disengaged.
The ÷ and : warning lamps light up in
the instrument display. ESP
deactivated for the duration of the shift oper‐
ation. If the shift operation is successful, the
÷ and : warning lamps in the instru‐
ment display go out and ESP
reactivated.
As long as the indicator lamp in switch
flashing, you can cancel the shift operation by
pressing switch 1 again. If the shift operation
fails, the indicator lamp in switch
flashes three times. One of the shift conditions
was not met.
If the indicator lamp in switch
wheel drive is engaged. A relevant message
appears in the display of the on-board computer.
%
If the LOW RANGE gear reduction is engaged,
the all-wheel drive cannot be disengaged.
Function of the LOW RANGE gear reduction
The LOW RANGE gear reduction enables very
slow driving in the respective gears. If you engage
LOW RANGE, the engine's performance charac‐
teristics and the automatic transmission's shift‐
ing characteristics are adjusted accordingly. The
transmission ratio from the engine to the wheels
is around 40% lower than in the road position.
The drive torque is increased correspondingly.
Conditions for engaging/disengaging
The following shifting conditions must be met in
order to engage or disengage LOW RANGE:
All-wheel drive is engaged (
R
The engine is running.
R
The vehicle is stationary.
R
You depress the brake pedal.
R
Vehicles with automatic transmission: the
R
selector lever is in position j or i.
1 flashes while
®
and ASR are
®
and ASR are
1 is
1 briefly
1 lights up, all-
page 125).
/
Engaging and disengaging LOW range
1
Engaging and disengaging LOW range
%
On vehicles with DSR (Downhill Speed Regu‐
lation), switch 1
for DSR.
To engage and disengage: press the upper
#
section of switch 1.
The + indicator lamp flashes in the instru‐
ment display for the duration of the shift
operation.
When the shift operation takes place and
R
LOW RANGE is engaged, the + indica‐
tor lamp lights up.
When the shift operation takes place and
R
LOW RANGE is disengaged, the + indi‐
cator lamp goes out.
As long as the indicator lamp + is flashing,
you can cancel the shift operation by pressing
button 1 again. If the shift operation fails, the
indicator lamp + briefly flashes three times.
One of the shift conditions was not met.

DSR (Downhill Speed Regulation)

Notes on DSR
If you fail to adapt your driving style or you are
inattentive, DSR can neither reduce the risk of
accident nor override the laws of physics. DSR
cannot take road, weather and traffic conditions
into account. DSR is only an aid. You are respon‐
sible for a safe distance to the vehicle in front, for
vehicle speed and for braking in good time.
DSR supports you when driving downhill. DSR
maintains a set speed for you on downhill gradi‐
ents by applying the brakes as required. Main‐
is replaced with the switch