Get Breakdown assistance -> Jump-starting Guide for Mercedes GLE SUV First Generation (2016-2019)

Jump-starting

359

Jump-starting

Plug-in hybrid: be sure to read the separate Owner's Manual. You could otherwise fail to recognise

dangers, e.g. due to high voltage.

For the jump-starting procedure, use only the jump-starting connection point, consisting of a pos-

itive terminal and an earth point, in the engine compartment.

G WARNING

Battery acid is caustic. There is a risk of injury.

Avoid contact with the skin, eyes or clothing. Do not breathe in any battery gases. Do not lean over

the battery. Keep the batteries out of the reach of children. Immediately rinse off battery acid

thoroughly with plenty of clean water and seek medical attention at once.

G WARNING

During charging and jump-starting, explosive gases can escape from the battery. There is a risk

of an explosion.

Particularly avoid fire, naked flames, creating sparks and smoking. Ensure there is sufficient

ventilation while charging and jump-starting. Do not lean over a battery.

G WARNING

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During the charging process, a battery produces hydrogen gas. If a short circuit occurs or sparks

are created, the hydrogen gas can ignite. There is a risk of an explosion.

R Make sure that the positive terminal of a connected battery does not come into contact with

vehicle parts.

R Never place metal objects or tools on a battery.

R It is important that you observe the described order of the battery terminals when connecting

and disconnecting a battery.

R When jump-starting, make sure that the battery poles with identical polarity are connected.

R It is particularly important to observe the described order when connecting and disconnecting

the jump leads.

R Never connect or disconnect the battery terminals while the engine is running.

G WARNING

A discharged battery can freeze at temperatures below freezing point. When jump-starting the

vehicle or charging the battery, gases can escape from the battery. There is a risk of an explosion.

Allow the frozen battery to thaw out before charging it or jump-starting.

! Vehicles with a petrol engine: avoid repeated and lengthy starting attempts. Otherwise, the

non-combusted fuel may damage the catalytic converter.

If the indicator/warning lamps do not light up at low temperatures, it is very likely that the dis-

charged battery has frozen. In this case you may neither jump-start the vehicle nor charge the

battery. The service life of a battery that has been thawed may be reduced. The starting charac-

teristics may be impaired, especially at low temperatures. Have the thawed battery checked at a

qualified specialist workshop.

Jump-starting

360

Do not use a rapid charging device to start the vehicle. If your vehicle's battery is discharged, the

engine can be jump-started from another vehicle or from a donor battery using jump leads. Observe

the following points:

R the battery is not accessible in all vehicles. If the other vehicle's battery is not accessible, jump-

start the vehicle using a donor battery or a jump-starting device.

R Vehicles with a petrol engine: jump-start the vehicle only when the engine and exhaust system

are cold.

R do not start the engine if the battery is frozen. Let the battery thaw first.

R jump-starting may be performed only using batteries with a nominal voltage of 12 V

R use only jump leads that have a sufficient cross-section and insulated terminal clamps.

R if the battery is fully discharged, leave the battery that is being used to jump-start connected for

a few minutes before attempting to start. This charges the empty battery a little.

R make sure that the two vehicles do not touch.

Make sure that:

R the jump leads are not damaged.

R non-insulated parts of the terminal clamps do not come into contact with other metal parts while

the jump leads are connected to the battery

R the jump leads cannot come into contact with parts that can move when the engine is running,

such as the V-belt pulley or the fan.

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X Secure the vehicle by applying the electric parking brake.

X Shift the transmission to position j.

X Make sure that the ignition is switched off. All indicator lamps on the instrument cluster must be

off. When using the key, turn the key to key position u in the ignition lock and remove it

( Y page 144).

X Switch off all electrical consumers, e.g. rear window heating, lighting etc.

X Open the bonnet.

i Right-hand-drive: The jump-starting connection points may be on the opposite side.

Position number B identifies the charged battery of the other vehicle or an equivalent jump-starting

device.

Towing and tow-starting

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X Slide cover : of positive terminal ; in the direction of the arrow.

X Connect positive terminal ; on your vehicle to positive terminal = of donor battery B using the

jump lead. Always begin with positive terminal ; on your own vehicle first.

X Start the engine of the donor vehicle and run it at idling speed.

X Connect negative terminal ? of donor battery B to earth point A of your vehicle using the jump

lead. Connect the jump lead to donor battery B first.

X Start the engine.

X Before disconnecting the jump leads, let the engines run for several minutes.

X First, remove the jump leads from earth point A and negative terminal ?, then from positive

clamp ; and positive terminal =. Each time, begin at the contacts on your own vehicle.

X After removing the jump leads, close cover : of positive terminal clamp ;.

X Have the battery checked at a qualified specialist workshop.

Jump-starting is not considered to be a normal operating condition.

i Jump-starting cables and further information regarding jump-starting can be obtained at any

qualified specialist workshop.

Towing and tow-starting

There is a risk of an accident.

When towing or tow-starting another vehicle,

Important safety notes

Breakdown assistance

its weight should not be greater than the per-

Plug-in hybrid: be sure to read the separate

missible gross weight of your vehicle.

Owner's Manual. You could otherwise fail to

recognise dangers, e.g. due to high voltage.

Details on the permissible gross vehicle weight

of your vehicle can be found on the vehicle iden-

G WARNING

tification plate ( Y page 386).

Safety-relevant functions are restricted or not

! When Active Brake Assist, Distance Pilot

available if:

DISTRONIC or the HOLD function is activated,

R the engine is not running.

the vehicle brakes automatically in certain

situations.

R the brake system or the power steering is

To avoid damage to the vehicle, deactivate

malfunctioning

these systems in the following or similar sit-

R the voltage supply or the vehicle's electrical

uations:

system is malfunctioning.

R when towing away

If your vehicle is towed, significantly greater

R in a car wash

force may be required to steer the vehicle or

! Make sure that the electric parking brake is

to brake. There is a risk of an accident.

released. If the electric parking brake is faulty,

In such circumstances, use a towing bar.

visit a qualified specialist workshop.

Make sure that the steering is moving freely

! Only secure the tow cable or tow bar to the

before towing.

towing eyes or, if available, to the trailer tow

hitch. You could otherwise damage the vehi-

G WARNING

cle.

When towing or tow-starting another vehicle

! Observe the following points when towing

and its weight is greater than the permissible

with a tow rope:

gross weight of your vehicle, the:

R Secure the tow rope on the same side on

R towing eye may be torn off

both vehicles.

R car/trailer combination may swerve or

R Make sure that the tow rope is not longer

than legally permitted. Mark the tow rope in

even overturn

Breakdown assistance -> Jump-starting for Your Mercedes GLE SUV First Generation (2016-2019)

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