Mercedes-Benz S-Class Owner's Manual page 494

492 Breakdown assistance
Always make sure that neither you nor the
R
battery is electrostatically charged.
Keep away from fire and naked flames.
R
Do not lean over the battery.
R
Observe the additional following points when
charging the battery:
Only use battery chargers tested and
R
approved for Mercedes-Benz.
Read the battery charger's operating instruc‐
R
tions before charging the battery.
Observe the additional following points during
starting assistance:
Starting assistance may only be provided
R
using batteries with a nominal voltage of
12 V.
The vehicles must not touch.
R
Petrol engine: only accept starting assis‐
R
tance if the engine and exhaust system are
cold.
Starting assistance and charging the 12 V
battery
Requirements:
The vehicle is secured with the electric park‐
R
ing brake.
The transmission is in position j.
R
The ignition and all electrical consumers are
R
switched off.
The engine bonnet is open.
R
Slide cover 3 of positive clamp
#
jump-starting connection point in the direc‐
tion of the arrow.
Connect positive clamp 4 on your vehicle to
#
the positive pole of the donor battery using
the jump lead/charging cable. Always begin
with positive clamp 4 on your own vehicle
first.
4 on the