Mercedes-Benz GLE 2022 Operator's Manual page 647

Connect POSITIVE contact
#
to the positive terminal of the donor battery
using the jump lead/charging cable. Always
begin with POSITIVE contact
vehicle first.
During starting assistance: start the engine of
#
the donor vehicle and run at idle speed.
Connect the negative terminal of the donor
#
battery and earth point 3
by using the jump lead/charging cable. Begin
with the donor battery first.
During starting assistance: start the engine of
#
your own vehicle.
During the charging process: start the charg-
#
ing process.
During starting assistance: let the engines run
#
for several minutes.
During starting assistance: before disconnect-
#
ing the jump lead, switch on an electrical con-
sumer on your own vehicle, e.g. the rear win-
dow heater or lighting.
When the starting assistance/charging process is
complete, perform the following steps:
2 on your vehicle First, remove the jump lead/charging cable
#
from earth point
of the donor battery, then POSITIVE contact
2 on your own 2 and the positive terminal of the donor bat-
tery. Begin each time with the contacts on
your own vehicle first.
After removing the jump lead/charging cable,
#
close cover
of your own vehicle
Plug-in hybrid: if your vehicle has been started
with starting assistance, it may not be possible to
use the electric drive for approximately 30
minutes.
Further information can be obtained at a qualified
specialist workshop.
Replacing the 12 V battery
Observe the notes on the 12 V battery
#
( page 639).
/
Mercedes-Benz recommends that you have the
12 V battery replaced at a qualified specialist
workshop, e.g. at a Mercedes-Benz Service
Centre.
3 and the negative terminal
1 of POSITIVE contact 2.
F167 0009 02
Breakdown assistance 645
Observe the following notes if you want to replace
the battery yourself:
Always replace a faulty battery with a battery
R
which meets the specific vehicle require-
ments.
The vehicle is equipped with an AGM (Absorb-
ent Glass Mat) technology battery or a lithium-
ion battery. Full vehicle functionality is only
guaranteed with an AGM battery or lithium-ion
battery. For safety reasons, Mercedes-Benz
recommends that you only use batteries which
have been tested and approved for your vehi-
cle by Mercedes-Benz.
Carry over detachable parts, such as vent
R
hoses, elbow fittings or terminal covers from
the battery being replaced.
Make sure that the vent hose is always con-
R
nected to the original opening on the side of
the battery.
Fit any existing or supplied cell caps.
Otherwise, gases or battery acid could
escape.
Make sure that detachable parts are recon-
R
nected in the same way.