420 Practical hintsJump startingThe 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 the parking brake (
page 61).
Make sure the gear selector lever is set
to position P (
page 168).
Open the hood (
page 274).
Remove the red cover from positive ter-
minal on both vehicles (
page 414).1Positive terminal of charged battery
2Positive terminal of discharged battery
3Negative terminal of discharged
battery
4Negative terminal of charged battery
Connect positive terminals 1 and 2
of the batteries with the red jumper ca-
ble. Clamp cable to charged battery 1
first.
Start the engine of the vehicle with the
charged battery and run at idle speed.
Connect negative terminals 3 and 4
of the batteries with the black jumper
cable. Clamp cable to charged
battery3 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 4 and 3 and then
from positive terminals 2 and 1.
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 281).
!
Never invert the terminal connections.
