Get Practical information -> Checking levels and components Guide for DS 4 4 Door Second Generation (2021-2026)

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Practical information

Checking levels

Check all of these levels regularly, in line with the manufacturer's service schedule. Top them up if necessary, unless otherwise indicated.

If a level drops significantly, have the corresponding system checked by a CITROËN dealer or a qualified workshop.

Checking using the dipstick

Take care when working under the

bonnet, as certain areas of the engine

may be extremely hot (risk of burns)

and the cooling fan could start at any

time (even with the ignition off).

The location of the dipstick is shown in the

corresponding underbonnet layout view.

If you find that the level is above the A mark or

below the B mark, do not start the engine.

F

Take the dipstick by its coloured grip and

remove it completely.

-

If the level is above the MAX mark (risk

of damage to the engine), contact a

CITROËN dealer or a qualified workshop.

If the level is below the MIN mark, you

must top up the engine oil.

F

Wipe the end of the dipstick using a clean

non-fluffy cloth.

-

Engine oil level

The check is carried out either when

the ignition is switched on using the

oil level indicator in the instrument

panel for vehicles so equipped, or

using the dipstick.

A = MAX

B = MIN

Oil grade

Before topping up the oil or changing the oil,

check that the oil is the correct grade for your

engine and conforms to the manufacturer's

recommendations.

To ensure that the reading is correct,

your vehicle must be parked on a level

surface with the engine having been off

for more than 30 minutes.

F

Refit the dipstick and push fully down, then

pull it out again to make the visual check:

the correct level is between the marks A

and B.

It is normal to top up the oil level between

two services (or oil changes). CITROËN

recommends that you check the level, and top

up if necessary, every 3 000 miles (5 000 kms).

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Practical information

Brake fluid level

The brake fluid level should be close

to the "MAX" mark. If it is not, check

the brake pad wear.

Topping up the engine oil level

The location of the oil filler cap is shown in the

corresponding underbonnet layout view.

Engine oil change

Refer to the manufacturer's service schedule

for details of the interval for this operation.

In order to maintain the reliability of the engine

and emission control system, never use

additives in the engine oil.

F

Unscrew the oil filler cap to reveal the filler

aperture.

Add oil in small quantities, avoiding any

spills on engine components (risk of fire).

Wait a few minutes before checking the

level again using the dipstick.

Changing the ﬂuid

Refer to the manufacturer's service schedule

for details of the interval for this operation.

F

Add more oil if necessary.

After checking the level, carefully refit the

oil filler cap and the dipstick in its tube.

Fluid speciﬁcation

The brake fluid must conform to the

manufacturer's recommendations.

After topping up the oil, the check when

switching on the ignition with the oil level

indicator in the instrument panel is not valid

during the 30 minutes after topping up.

Power steering fluid

level

The power steering fluid level should

be close to the "MAX" mark. With

the engine cold, unscrew the cap to

check the level.

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Practical information

Coolant level

Check the coolant level regularly.

It is normal to top up this fluid

between services.

When the engine is hot, the temperature of the

coolant is regulated by the fan.

When the engine is hot, as the cooling system is

pressurised, wait at least one hour after switching

off the engine before carrying out any work.

To avoid the risk of scalding in the event of an

urgent need to top up, with a cloth around the

cap, unscrew it by two turns to allow the pressure

to drop.

To ensure that the measurement is reliable, the

vehicle must be parked on level ground and the

engine must be cold.

The coolant level should be close to the "MAX"

mark but should never exceed it.

If the level is close to or below the "MIN" mark,

it is essential to top up.

Once the pressure has dropped, remove the cap

and top up the level.

A low coolant level presents a risk of serious

damage to your engine.

Fluid speciﬁcation

The coolant must conform to the

manufacturer's recommendations.

The cooling fan may start after

switching off the engine: take care

with articles and clothing that might

be caught by the fan blades.

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Practical information

Screenwash / headlamp wash fluid level

To check the level or top up the

fluid on vehicle fitted with headlamp

washers, immobilise the vehicle and

switch of the engine.

F

Open the bonnet and secure it with the

stay.

Speciﬁcation of the ﬂuid

To ensure optimum cleaning and to avoid

freezing, the fluid should never be topped up or

replaced by plain water.

In wintry conditions, the use of a fluid

with an ethyl alcohol or methanol base is

recommended.

F

Open the screenwash reservoir filler cap.

Take and pinch the level gauge to block its

breather.

F

Remove the gauge completely from

the reservoir to read the level in the

transparent section.

F

Top up if necessary.

Refit the filler cap to the reservoir and

close the bonnet.

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Practical information

Additive level

(Diesel with particle filter)

Used products

According to your version of instrument panel,

the additive reservoir low level is indicated by:

Avoid prolonged contact of used oil or

fluids with the skin.

-

fixed illumination of the particle

filter warning lamp, accompanied

by an audible signal and a

Most of these fluids are harmful to

health or indeed very corrosive.

message that the particle filter

additive level is too low,

or

Do not discard used oil or fluids into

sewers or onto the ground.

Take used oil to a CITROËN dealer or

a qualified workshop (France) or to an

authorised waste disposal site.

-

fixed illumination of the service

warning lamp, accompanied by

an audible signal and a message

that the particle filter additive

level is too low.

Topping up

The reservoir must be topped up without delay

by a CITROËN dealer or a qualified workshop.

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Practical information

Checking components

Unless otherwise indicated, check these components in accordance with the manufacturer's service schedule and according to your engine.

Otherwise, have them checked by a CITROËN dealer or a qualified workshop.

12 V battery

Air filter and passenger compartment filter Particle filter (Diesel)

The battery does not require any maintenance.

However, check regularly that the

terminals are correctly tightened

(versions without quick release terminals)

and that the connections are clean.

Refer to the manufacturer's

service schedule for details of the

replacement intervals for these

components.

According to your version of instrument panel, the start of

saturation of the particle emissions filter is indicated by:

-

fixed illumination of the particle

filter warning lamp, accompanied

by an audible signal and a

message that there is a risk of

blockage of the particle filter,

Depending on the environment (e.g. dusty

atmosphere) and the use of the vehicle

(e.g. city driving), replace them twice as often

if necessary.

A clogged passenger compartment filter may

have an adverse effect on the performance

of the air conditioning system and generate

undesirable odours.

For more information and the precautions to

take before starting work on the 12 V battery,

refer to the corresponding section.

or

temporary illumination of

the service warning lamp,

Versions equipped with Stop &

Start are fitted with a 12 V lead-acid

battery of specific technology and

specification.

Its replacement should be carried

out only by a CITROËN dealer or a

qualified workshop.

accompanied by an audible signal

and a message that there is a risk

of blockage of the particle filter.

Oil filter

As soon as the traffic conditions permit,

regenerate the filter by driving at a speed of at

least 40 mph (60 km/h) until the warning lamp

goes off.

If the warning lamp stays on, there is a lack of

additive.

Replace the oil filter each time the

engine oil is changed.

Refer to the manufacturer's

service schedule for details of

the replacement interval for this

component.

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Practical information

Manual gearbox

Brake pads

The gearbox does not require any

Brake wear depends on the style

For more information on Checking

the levels and in particular on the

diesel additive level, refer to the

corresponding section.

maintenance (no oil change).

Refer to the manufacturer's service

schedule for the checking interval for

this component.

of driving, particularly in the case

of vehicles used in town, over short

distances. It may be necessary to have

the condition of the brakes checked,

even between vehicle services.

On a new vehicle, the first operations

of regeneration of the particle filter

may be accompanied by the smell of

"burning", which is perfectly normal.

Following prolonged operation of the

vehicle at very low speed or at idle,

you may, in exceptional circumstances,

notice the emission of water vapour at

the exhaust on acceleration. This does

not affect the behaviour of the vehicle

or the environment.

Unless there is a leak in the circuit, a drop in

the brake fluid level indicates that the brake

pads are worn.

Automatic gearbox

The gearbox does not require any

maintenance (no oil change).

Refer to the manufacturer's service

schedule for the checking interval for

this component.

Brake disc wear

For information on checking brake

disc wear, contact a CITROËN dealer

or a qualified workshop.

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Practical information

Parking brake

If excessive travel or a loss of

effectiveness of this system is

noticed, the parking brake must be

checked, even between two services.

Only use products recommended by

CITROËN or products of equivalent

quality and specification.

In order to optimise the operation of

units as important as those in the

braking system, CITROËN selects and

offers very specific products.

Checking this system must be done by a

CITROËN dealer or a qualified workshop.

After washing the vehicle, dampness,

or in wintry conditions, ice can form

on the brake discs and pads: braking

efficiency may be reduced. Make light

brake applications to dry and defrost

the brakes.

Electric parking brake

This system does not require any

routine servicing. However, in the

event of a problem, have the system

checked by a CITROËN dealer or a

qualified workshop.

For more information on the Electric parking

brake, refer to the corresponding section.

Practical information -> Checking levels and components for Your DS 4 4 Door Second Generation (2021-2026)

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