436 Practical hintsJump starting
Always make sure the jumper cables 
are not on or near pulleys, fans or other 
parts that move when the engine is 
started or running.
The main battery is located in the trunk un-
derneath the luggage box (
page 401).
Make sure the two vehicles do not 
touch.
Turn off all electrical consumers.
Apply parking brake.
Shift gear selector lever to positionP.
Connect positive terminals1 and3 
of the batteries with the jumper cable. 
Clamp cable to charged battery3 
first.
1Positive terminal of discharged battery
2Negative terminal of discharged bat-
tery
3Positive terminal of charged battery
4Negative terminal of charged battery
Start engine of the vehicle with the 
charged battery and run at idle speed.
Connect negative terminals4 and2 
of the batteries with the jumper cable. 
Clamp cable to charged battery4 
first.
Start the engine of the disabled vehi-
cle.
Now you can again turn on the electrical 
consumers. Do not turn on the lights under 
any circumstances.
Remove the jumper cables first from 
negative terminals2 and4 and then 
from positive terminals1 and3.
Now you can turn on the lights.
Have the battery checked at the near-
est authorized Mercedes-Benz Center.
Warning!
G
Keep flames or sparks away from battery. 
Do not smoke.
Observe all safety instructions and precau-
tions when handling automotive batteries 
(page 299).
!Never invert the terminal connections!
iThe message 
Malfunction - electric 
consumers switched off
 may appear 
in the instrument cluster. It will disap-
pear as soon as the battery is suffi-
ciently charged.