Mercedes-Benz A Series Owner's Manual page 270

G Risk of injury
There is a risk of acid burns when jump-
starting a vehicle due to the gases which
escape from the battery. Do not lean over
the battery while the engine is being jump-
started.
G Risk of explosion
Gases escaping from the battery during
jump-starting may cause minor explosions.
Avoid creating sparks. Keep naked flames
away from the battery, and do not smoke.
Comply with safety precautions and take
protective measures when handling batter-
ies. You will find these under "Battery" in
the index.
Make sure that the two vehicles do not
X
touch.
Apply the parking brake.
X
Manual transmission: engage neutral.
X
AUTOTRONIC*: move the DIRECT SELECT
X
selector lever to P.
Switch off all electrical consumers.
X
Open the bonnet ( page 171).
X
Y
* optional
Positive terminal of donor battery
1
2 Positive terminal on your vehicle
Negative terminal of donor battery
3
Negative terminal on your vehicle
4
Open the battery cover ( page 264).
X
Y
Connect positive terminal 2
X
cle to positive terminal 1 of the donor bat-
tery using the jump lead, beginning with
your own battery.
Start the engine of the donor vehicle and
X
run it at idling speed.
Connect negative terminal 3
X
battery to negative terminal
vehicle's battery using the jump lead, con-
necting the jump lead to the donor battery
first.
Start the engine.
X
Electrical consumers can be switched on
X
again. Do not, however, switch on the lights
as this places too heavy a load on the bat-
tery.
Remove the jump lead from earth
X
point 4 and negative terminal
then from positive terminals
each time disconnecting from the battery
on your own vehicle first.
Have the battery checked at a qualified
X
specialist workshop, e.g. a Mercedes-Benz
Service Centre.
on your vehi-
of the donor
4 of your
Practical advice
Jump-starting
3 first,
1 and 2,
Z
267