Mercedes-Benz Sprinter 2018 Operating Instructions Manual page 305

Carry over detachable parts such as the vent
R
hose, elbow fitting or terminal cover from the
starter battery to be replaced.
Make sure that the vent hose is always con‐
R
nected to its original opening on the battery
side.
Fit the existing or newly supplied stop plugs.
Otherwise, gases or battery acid could
escape.
Make sure that the detachable parts are con‐
R
nected in the same way as before.
Disconnecting the auxiliary battery in the
engine compartment
* NOTE Damage to the electrical assembly
By disconnecting the starter battery before
the engine is switched off and the key is
removed from the ignition lock, electrical
assemblies could be damaged.
Switch off the engine and remove the
#
key from the ignition lock. Then, release
the battery clamps of the starter bat‐
tery.
Always disconnect the starter battery in
#
the battery case in the left footwell first.
Otherwise, electrical assemblies, e.g.
the alternator, could be damaged.
* NOTE Damage to the vehicle's electron‐
ics
Incorrectly disconnecting the auxiliary battery
can cause damage to the vehicle's electron‐
ics.
Always disconnect the auxiliary battery
#
as described in the following sequence.
Do not reverse the battery terminals
under any circumstances.
Breakdown assistance 303
Observe the safety measures and protection
#
notices when disconnecting the auxiliary bat‐
tery ( page 297).
/
Switch off all electrical consumers.
#
Switch off the engine and the power supply.
#
Open the bonnet (
/
#
First loosen and remove the negative terminal
#
clamp on the auxiliary battery so that the
clamp is no longer in contact with the termi‐
nal.
Remove the positive terminal clamp cover.
#
Loosen and remove the positive terminal
#
clamp.
Disconnecting the auxiliary battery under the
co-driver's bench seat
* NOTE Damage to the electrical assembly
By disconnecting the starter battery before
the engine is switched off and the key is
removed from the ignition lock, electrical
assemblies could be damaged.
Switch off the engine and remove the
#
key from the ignition lock. Then, release
the battery clamps of the starter bat‐
tery.
Always disconnect the starter battery in
#
the battery case in the left footwell first.
Otherwise, electrical assemblies, e.g.
the alternator, could be damaged.
page 279).