Mercedes-Benz SL 2008 Owner's Manual page 247

Practical advice
Troubleshooting
Engine
Problem
The engine will not start.
The engine will not start. You can
hear the starter motor operating.
The engine will not start. You can-
not hear the starter motor oper-
ating.
244
Possible cause/consequence
®
SBC HOLD is activated.
There is a malfunction in the
R
engine electronics.
There is a malfunction in the
R
fuel supply.
The on-board voltage is too low
because the starter battery is too
weak or discharged.
The starter motor was exposed to
a thermal load that was too high.
Suggested solutions
®
Deactivating SBC HOLD (
X
Y
Start the engine again.
X
Turn the key back to position 0 in the ignition lock before the next
X
starting attempt.
Try to start the engine again (
X
that excessively long and frequent attempts to start the engine will
drain the battery.
If the engine does not start after several attempts:
Consult a qualified specialist workshop.
X
Jump-start the vehicle ( page 279).
X
Y
If the engine does not start despite attempting to jump-start it:
Consult a qualified specialist workshop.
X
Allow the starter motor to cool down for approximately two
X
minutes.
Try to start the engine again.
X
If the engine still does not start:
Consult a qualified specialist workshop.
X
page 137).
page 95). When doing so, remember
Y