Mercedes-Benz GLE Coupe 2023 Operator's Manual page 342

340 Breakdown assistance
Fire, naked flames and smoking are pro-
hibited when you are handling the battery.
Avoid creating sparks.
Electrolyte or battery acid is corrosive.
Avoid contact with the skin, eyes or cloth-
ing. Wear suitable protective clothing, in
particular gloves, an apron and a face
mask. Immediately rinse off splashes of
electrolyte or acid with plenty of clean
water. Consult a doctor immediately.
Do not place heavy objects on the surface
of the battery or use the battery to sup-
port a person in any way.
Do not perform any work on the battery.
Always have any work on the battery car-
ried out at a qualified specialist workshop.
Do not disconnect the battery yourself.
Do not remove the battery yourself. Do
not attempt to open the battery.
Keep children away.
Wear safety glasses.
Observe this Operator's Manual.
Observe the following if you do not intend to use
the vehicle over an extended period of time:
Non-plug-in hybrid: switch to standby mode
R
( page 186).
/
Notes on starting assistance and charging the 12
V battery
All vehicles
When charging the battery and during starting
assistance, always use the jump-start connection
point in the engine compartment.
* NOTE Damage to the battery due to over-
voltage
When charging using a battery charger without
a maximum charging voltage, the battery or
the on-board electronics may be damaged.
Only use battery chargers with a maxi-
#
mum charging voltage of 14.8 V.
& WARNING Risk of explosion due to the
ignition of hydrogen gas
If there is a short circuit or sparks are created,
there is a danger of hydrogen gas igniting
when you charge the battery.
Make sure that the POSITIVE terminal of
#
a connected battery does not come into
contact with vehicle parts.
Never place metal objects or tools on a
#
battery.
When connecting and disconnecting the
#
battery, always observe the sequence of
battery terminals described.
During starting assistance, always take
#
care to connect only battery terminals of
identical polarity.
During starting assistance, observe the
#
sequence described for connecting and
disconnecting the jumper cables.
Do not connect or disconnect the bat-
#
tery terminals with the engine running.