If drive program S, S+ or M is active, the
automatic transmission switches to drive
program C.
If indicator lamp
;
is off, the ECO start/stop
function has been deactivated manually or as
the result of a malfunction. The engine will
then not be switched off automatically when
the vehicle stops.
Problems with the engine
Problem
Possible causes/consequences and
M
M
Solutions
The engine does not
start.
The HOLD function or Active Distance Assist DISTRONIC is activa-
ted.
X
Deactivate the HOLD function (
Y
page 165) or Active Distance
Assist DISTRONIC (
Y
page 161).
X
Try to start the engine again.
The engine does not
start. The starter motor
can be heard.
R
There is a malfunction in the engine electronics.
R
There is a malfunction in the fuel supply.
Before attempting to start the engine again:
X
Turn the SmartKey back to position
u
in the ignition lock.
or
X
Press the Start/Stop button repeatedly until all indicator lamps in
the instrument cluster go out.
X
Try to start the engine again (
Y
page 127). Avoid excessively long
and frequent attempts to start the engine as these will drain the
battery.
If the engine does not start after several attempts:
X
Consult a qualified specialist workshop.
The engine does not
start. You cannot hear
the starter motor.
The on-board voltage is too low because the battery is too weak or
discharged.
X
Jump-start the vehicle (
Y
page 285).
If the engine does not start despite attempts to jump-start it:
X
Consult a qualified specialist workshop.
The starter motor was exposed to a thermal load that was too high.
X
Allow the starter motor to cool down for approximately two
minutes.
X
Try to start the engine again.
If the engine still does not start:
X
Consult a qualified specialist workshop.
Driving
131
Drivi
ng
and
par
king
Z
Summary of Contents for SL 450 2019
Page 330: ...328...
