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

Drive to the nearest qualified specialist work-

shop and have the tyre changed there.

Have the tyre sealant bottle and the filler hose

replaced as soon as possible at a qualified

specialist workshop.

Have the tyre sealant bottle replaced every

four years at a qualified specialist workshop.

Battery (vehicle)

Important safety notes

Work on the battery, e.g. removing or fitting,

requires specialist knowledge and the use of

special tools. Therefore, always have work on

the battery carried out at a qualified specialist

workshop.

WARNING

Work carried out incorrectly on the battery

can lead, for example, to a short circuit and

thus damage the vehicle electronics. This can

lead to function restrictions applying to

safety-relevant systems, e.g the lighting sys-

tem, the ABS (anti-lock braking system) or the

ESP

(Electronic Stability Program). The oper-

ating safety of your vehicle may be restricted.

You could lose control of the vehicle, for

example:

when braking

in the event of abrupt steering manoeuvres

and/or when the vehicle's speed is not

adapted to the road conditions

There is a risk of an accident.

In the event of a short circuit or a similar inci-

dent, contact a qualified specialist workshop

immediately. Do not drive any further. Always

have work on the battery carried out at a

qualified specialist workshop.

Further information about ABS (Y page 66) and

ESP

(Y page 69).

WARNING

Electrostatic build-up can lead to the creation

of sparks, which could ignite the highly explo-

sive gases of a battery. There is a risk of an

explosion.

Before handling the battery, touch the vehicle

body to remove any existing electrostatic

build-up.

The highly flammable gas mixture is created

while the battery is charging and when jump-

starting.

Always make sure that neither you nor the bat-

tery is electrostatically charged. Electrostatic

charge is created, for example:

by wearing synthetic-fibre clothing

by friction between clothing and the seat

if you pull or push the battery across carpet or

other synthetic materials

if you rub the battery with a cloth

WARNING

During the charging process, a battery produ-

ces 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 con-

tact with vehicle parts.

Never place metal objects or tools on a bat-

tery.

It is important that you observe the descri-

bed 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 dis-

connecting the jump leads.

Never connect or disconnect the battery

terminals while the engine is running.

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.

Battery (vehicle)

299

Breakdown assistance

Environmental note

Batteries contain pollutants.

It is illegal to dispose of them

with the household rubbish.

They must be collected sep-

arately and disposed of in an

environmentally responsible

recycling system.

Dispose of batteries in an

environmentally responsible

manner. Take discharged

batteries to a qualified spe-

cialist workshop or to a col-

lection point for used batter-

ies.

Have the battery checked regularly at a

qualified specialist workshop.

Observe the service intervals in the Service

Booklet or contact a qualified specialist work-

shop for more information.

You should have all work involving the bat-

tery carried out at a qualified specialist work-

shop. In the exceptional case that it is neces-

sary for you to disconnect the battery your-

self, make sure that:

you switch off the engine and remove the

key. On vehicles with KEYLESS-GO, ensure

that the ignition is switched off. Check that

all the indicator lamps in the instrument

cluster are off. Otherwise, electronic com-

ponents, such as the alternator, may be

damaged.

you first remove the negative terminal

clamp and then the positive terminal

clamp. Never swap the terminal clamps.

Otherwise, the vehicle's electronic system

may be damaged.

in vehicles with automatic transmission,

the transmission is locked in position P

after disconnecting the battery. The vehicle

is secured against rolling away. You can

then no longer move the vehicle.

The battery and the cover of the positive ter-

minal clamp must be fitted securely during

operation.

Comply with safety precautions and take pro-

tective measures when handling batteries.

Risk of explosion

Fire, naked flames and smoking are

prohibited when handling the bat-

tery. Avoid creating sparks.

Battery acid is caustic. Avoid contact

with the skin, eyes or clothing.

Wear suitable protective clothing; in

particular, gloves, an apron and a

face mask.

Immediately rinse acid splashes off

with clean water. Consult a doctor if

necessary.

Wear eye protection.

Keep children at a safe distance.

Observe this Owner's Manual.

For safety reasons, Mercedes-Benz recom-

mends that you only use batteries which have

been tested and approved for your vehicle by

Mercedes-Benz. These batteries provide

increased impact protection to prevent vehicle

occupants from suffering acid burns should the

battery be damaged in the event of an accident.

In order for the battery to achieve the maximum

possible service life, it must always be suffi-

ciently charged.

Like other batteries, the vehicle battery may

discharge over time if you do not use the vehicle.

In such cases, have the battery disconnected at

a qualified specialist workshop. You can also

charge the battery with a charger recommended

by Mercedes-Benz. For more information,

please contact a qualified specialist workshop.

Have the battery charge checked more fre-

quently if you use the vehicle mainly for short

trips or if you leave it standing idle for a lengthy

period. Consult a qualified specialist workshop

if you wish to leave your vehicle parked up for a

long period of time.

When you park the vehicle, remove the key if you

do not require any electrical consumers. The

300

Battery (vehicle)

Breakdown assistance

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

301

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

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