407 Practical hints
Jump starting
The starter battery is located on the right 
side of the engine compartment.
Make sure the two vehicles do not 
touch.
Turn off all electrical consumers.
Apply parking brake.
Shift gear selector lever to positionP.
Remove the red cover from positive ter-
minal on both vehicles (
page 401).1Negative terminal of charged battery
2Negative terminal of discharged 
battery
3Positive terminal of discharged battery
4Positive terminal of charged battery
Connect positive terminals 3 and 4 
of the batteries with the jumper cables. 
Clamp cable to charged battery 4 
first.
Start the engine of the vehicle with the 
charged battery and run at idle speed.
Connect negative terminals 1 and 2 
of the batteries with the jumper cables. 
Clamp cable to charged battery 1 
first.
Start the engine of the disabled vehi-
cle.
You can now turn on the electrical con-
sumers. Do not turn on the lights under 
any circumstances.
Remove the jumper cables first from 
negative terminals 1 and 2 and then 
from positive terminals 3 and 4.
You can now turn on the lights.
Have the battery checked at the near-
est 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 277).
!Never invert the terminal connections.
!Do not tow-start the vehicle.