Get Breakdown assistance -> Jump-starting Guide for Mercedes CLA 4 Door First Generation (2013-2018)

vehicle will then use very little energy, thus con-

serving battery power.

If the power supply has been interrupted, e.g. if

the battery was discharged, you will have to:

set the clock using the multimedia system;

see the separate operating instructions.

reset the function for folding the exterior mir-

rors in/out automatically, by folding the mir-

rors out once (Y page 104)

Charging the battery

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.

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.

WARNING

A discharged battery can freeze at tempera-

tures below freezing point. When jump-start-

ing 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.

Only use battery chargers with a maximum

charging voltage of 14.8 V.

Only charge the battery using the jump-start

connection point.

The jump-starting connection point is in the

engine compartment (Y page 301).

Open the bonnet.

Connect the battery charger to the positive

terminal and earth point in the same order as

when connecting the donor battery in the

jump-starting procedure (Y page 301).

If the indicator/warning lamps do not light up in

the instrument cluster at low temperatures, it is

very likely that the discharged battery has fro-

zen. 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 characteristics may be impaired,

especially at low temperatures. Have the

thawed battery checked at a qualified specialist

workshop.

Only charge the installed battery with a battery

charger which has been tested and approved by

Mercedes-Benz. A battery charger unit specially

adapted for Mercedes-Benz vehicles and tested

and approved by Mercedes-Benz is available as

an accessory. This device permits charging of

the battery while it is installed. Contact a

Mercedes-Benz Service Centre for information

and availability. Read the battery charger's

operating instructions before charging the bat-

tery.

Jump-starting

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.

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.

Jump-starting

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Breakdown assistance

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.

WARNING

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.

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.

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

and disconnecting a battery.

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

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

the jump leads.

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

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 in the instrument cluster at low temperatures, it is very

likely that the discharged battery has frozen. In this case you may neither jump-start the vehicle nor

charge the battery. Let the battery thaw first. The service life of a battery that has been thawed may

be reduced. The starting characteristics may be impaired, especially at low temperatures. Have the

thawed battery checked at a qualified specialist workshop.

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 second battery using jump leads.

Observe the following points:

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

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

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

are cold.

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

Jump-starting may be performed only using batteries with a nominal voltage of 12 V.

Only use jump leads that are not damaged and have a sufficient cross-section and insulated

terminal clamps.

Make sure that the two vehicles do not touch.

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Jump-starting

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Make sure that:

The jump leads are not damaged.

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

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

Secure the vehicle by applying the electric parking brake.

Manual transmission: depress the clutch pedal fully and engage neutral.

Automatic transmission: shift the transmission to position P.

Turn the key to position 0in the ignition lock and remove it.

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

Open the bonnet.

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

device.

Press together cover : of positive clamp ; and slide it back.

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

jump lead, beginning with your own battery.

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

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

lead, connecting the jump lead to donor battery B first.

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.

Start the engine.

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

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 first.

Close cover : of positive clamp ; after removing the jump leads.

Close the bonnet.

Have the battery checked at a qualified specialist workshop.

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

Jump-starting

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Breakdown assistance

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

qualified specialist workshop.

Towing away and tow-starting

Important safety notes

WARNING

Safety relevant functions are restricted or no

longer available if:

the engine is not running

the brake system or power steering is mal-

functioning

there is a malfunction in the voltage supply

or the vehicle's electrical system

When your vehicle is towed away or towed

started, you may require considerably more

effort to steer and brake. There is a risk of an

accident.

In such cases use a rigid towing bar. Before

being towed away or tow started, make sure

the steering moves freely.

WARNING

If the steering wheel lock is engaged, the vehi-

cle can no longer be steered. There is a risk of

an accident.

Always switch on the ignition when towing

with a tow rope or a towing bar.

WARNING

When towing or tow-starting another vehicle

and its weight is greater than the permissible

gross weight of your vehicle, the:

towing eye may be torn off

car/trailer combination may swerve or

even overturn

There is a risk of an accident.

When towing or tow-starting another vehicle,

its weight should not be greater than the per-

missible gross weight of your vehicle.

Details on the permissible gross vehicle weight

of your vehicle can be found on the vehicle iden-

tification plate (Y page 326).

When Active Brake Assist, Distance Pilot

DISTRONIC or the HOLD function is activated,

the vehicle brakes automatically in certain

situations.

To avoid damage to the vehicle, deactivate

these systems in the following or similar sit-

uations:

when towing away

in a car wash

Make sure that the electric parking brake is

released. If the electric parking brake is faulty,

visit a qualified specialist workshop.

Only secure the tow cable or tow bar to the

towing eyes or, if available, to the trailer tow

hitch. You could otherwise damage the vehi-

cle.

Observe the following points when towing

with a tow rope:

Secure the tow rope on the same side on

both vehicles.

Make sure that the tow rope is not longer

than legally permitted. Mark the tow rope in

the middle, e.g. with a white cloth

(30 x 30 cm). This will make other road

users aware that a vehicle is being towed.

Only secure the tow cable to the towing

eyes or, if available, to the trailer tow hitch.

Observe the brake lamps of the towing

vehicle while driving. Always maintain a dis-

tance a distance so that the tow rope does

not sag.

Do not use steel cables or chains to tow

your vehicle. You could otherwise damage

the vehicle.

Do not use the towing eyes for recovery pur-

poses as this could damage the vehicle. If in

doubt, recover the vehicle with a crane.

Pull away smoothly when towing away or

tow-starting a vehicle. If the tractive power is

too high, the vehicles could be damaged.

You may tow the vehicle for a maximum of

50km. A towing speed of 50 km/h must not

be exceeded.

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Towing away and tow-starting

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Breakdown assistance -> Jump-starting for Your Mercedes CLA 4 Door First Generation (2013-2018)

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