Mercedes-Benz Zetros 2020 Operating Instructions Manual page 116

Driving systems
114
X
To activate the cold-start aid: turn the
vehicle key to the drive position in the igni-
tion lock.
The % indicator lamp in the instrument
cluster lights up. The cold-start aid is oper-
ating.
X
When the % indicator lamp goes out in
the instrument cluster, start the engine
within 30 seconds.
At a coolant temperature above approximately
−4 †, the % indicator lamp goes out after
approximately 2 seconds (display check).
At a coolant temperature below approximately
−4 †, the % indicator lamp goes out after
approximately 30 seconds.
The cold-start aid is deactivated if:
you do not start the engine within
R
30 seconds of the % indicator lamp
going out.
you start the engine while the % indica-
R
tor lamp is lit.
A malfunction in the cold-start aid is indicated
in the display by a display message with a yel-
low status indicator and the system abbrevia-
tion FLA. Have the cold-start aid checked and
repaired at a qualified specialist workshop.
Idle speed
Buttons on the multifunction steering wheel
After the engine has started, the idling speed
is controlled automatically according to the
coolant temperature.
The idling speed is approximately 600 rpm
with the engine at normal operating tempera-
ture.
The engine idling speed can be set via the on-
board computer. This makes it possible to
operate auxiliary equipment such as pumps at
their working speed.
Setting the idling speed
X
Press the Ù button on the multifunction
steering wheel repeatedly until the
speed
input window is shown in the on-
board computer.
X
Press the s or r button to increase
or decrease the idling speed in approx-
imately 20 rpm increments.
X
Press the 9 button to exit the input win-
dow.
or
X
Wait for approximately 3 seconds.
The setting is stored automatically.
Switching off the idling speed setting
X
Press the o button.
or
X
Press the Ù button repeatedly until the
Engine speed
input window is shown in the
on-board computer.
X
Press the u button.
The increased idling speed is automatically
reset if you drive faster than approximately
20 km/h.
Driving systems
Introduction to driving systems
The vehicle may be equipped with the follow-
ing driving systems:
Y
Limiter ( page 114)
R
Y
Cruise control ( page 116)
R
Limiter
Important safety notes
The speed limiter is only an aid. You are
responsible for the distance to the vehicle in
front, for vehicle speed, braking in good time
and remaining in lane. You should always
adapt your driving style to suit prevailing road
and weather conditions.
Also observe the warning notes of the other
driving systems.
Engine