Mercedes-Benz S-Class 2007 - Manual (Page 642)

641
Practical hints
Jump starting
̈ Remove red cover from positive
terminal
1.
̈ Connect positive terminal 2 of the
charged battery with positive
terminal
1 of the discharged battery
with the jumper cable. Clamp cable to
charged battery
2 first.
̈ Connect negative terminal 3 of
charged battery to jumper cables and
attach other end
4 to a suitable
ground point on the vehicle.
̈ Get into vehicle and start engine within
30 seconds.
If the starting attempt does not suc-
ceed:
̈ Turn the SmartKey in starter switch
to position 0.
̈ Take out the SmartKey.
̈ Turn off engine of donor vehicle, re-
start it and let it run at idle speed
for several minutes.
̈ Disconnect the jumper cable during
this time.
̈ Reconnect jumper cable as de-
scribed before.
̈ Restart engine.
̈ While the engine is running, switch off
several electrical consumers such as
the blower.
̈ Disconnect jumper cables first from
ground point
4 and negative
terminal 3, then from positive
terminals 1 and 2.
̈ Have the battery checked at the near-
est authorized Mercedes-Benz Center. ! Never invert the terminal connections.