2020-2024 DS 9 4 Door Practical information -> Checks User Manual
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Practical information -> Checks for Your DS 9 4 Door First Generation (2020-2024)

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Practical information  
appropriate for the temperature conditions  
must be used in order to protect the system's  
components (pump, tank, ducts, jets).  
For more information on the precautions  
to take before any work on the 12 V  
Engine coolant  
It is normal to top up this fluid between  
battery, refer to the corresponding section.  
two services.  
The check and top-up must only be done with the  
engine cold.  
Filling with pure water is prohibited in all  
circumstances (risk of freezing, limescale,  
etc.).  
Versions equipped with Stop & Start are  
fitted with a 12 V lead-acid battery with  
special technology and specifications.  
Its replacement should be carried out only by a  
dealer or a qualified workshop.  
A level of coolant that is too low risks causing  
major damage to the engine; the coolant level  
must be close to the "MAX" mark without ever  
going above it.  
Checks  
If the level is close to or below the "MIN" mark, it  
is essential to top it up.  
Unless otherwise indicated, check these  
components in accordance with the  
manufacturer's service schedule and according to  
your engine.  
Air filter  
When the engine is hot, the temperature of the  
coolant is regulated by the fan.  
Depending on the environment and the use  
of the vehicle (e.g. dusty atmosphere, city  
As the cooling system is pressurised, wait at least  
one hour after switching off the engine before  
carrying out any work.  
driving), change it twice as often, if necessary.  
Otherwise, have them checked by a dealer or a  
qualified workshop.  
Passenger compartment filter  
In order to avoid the risk of scalding if you need to  
top up in an emergency, wrap a cloth around the  
cap and unscrew the cap by two turns to allow the  
pressure to drop.  
Only use products recommended by the  
Manufacturer or products of equivalent  
quality and specification.  
Depending on the environment and the use  
of the vehicle (e.g. dusty atmosphere, city  
driving), change it twice as often, if necessary.  
In order to optimise the operation of  
components as important as those in the  
braking system, the Manufacturer selects and  
offers very specific products.  
Once the pressure has dropped, remove the cap  
and top up to the required level.  
A clogged passenger compartment filter  
can adversely affect air conditioning  
system performance and generate undesirable  
odours.  
Screenwash fluid  
Top up to the required level when  
12 V battery  
necessary.  
Oil filter  
The battery does not require any  
Fluid specification  
maintenance.  
Change the oil filter each time the engine  
Check regularly that the terminals are correctly  
tightened (versions without quick-release  
terminals) and that the connections are clean.  
oil is changed.  
The fluid must be topped up with a pre-mixed  
product.  
In winter (temperatures below zero), a fluid  
containing an anti-freeze agent which is  
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07  
Practical information  
For more information on the Electric  
reading and have an adverse effect on road  
Automatic gearbox  
parking brake, refer to the corresponding  
holding.  
The gearbox does not require any  
section.  
Fitting different tyres on the front and rear axles  
can cause the ESC to mistime.  
maintenance (no oil change).  
Always mark the direction of rotation on the tyres  
that will be stored when fitting winter or summer  
tyres. Store them in a cool, dry place and away  
from direct exposure to the sun's rays.  
Winter or 4-seasons tyres can be identified  
by this symbol on their sidewalls.  
Brake pads  
Wheels and tyres  
The inflation pressure of all tyres,  
including the spare wheel, must be  
checked on "cold” tyres.  
Brake wear depends on the style 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.  
The pressures indicated on the tyre pressure label  
are valid for "cold" tyres. If you have driven for  
more than 10 minutes or more than 6 miles (10  
kilometres) at over 31 mph (50 km/h), add 0.3 bar  
(30 kPa) to the values indicated on the label.  
Unless there is a leak in the circuit, a drop in the  
brake fluid level indicates that the brake pads are  
worn.  
Shock absorbers  
It is not easy for drivers to detect when  
shock absorbers are worn. Nevertheless,  
the shock absorbers have a major impact on road  
holding and braking performance.  
After washing the vehicle, moisture, or in  
wintry conditions, ice can form on the  
brake discs and pads: braking efficiency may  
be reduced. Gently dab the brakes to dry and  
defrost them.  
Under-inflation increases energy  
consumption. Non-compliant tyre  
For your safety and driving comfort, it is important  
to have them regularly checked by a dealer or a  
qualified workshop.  
pressures cause tyres to wear prematurely and  
have an adverse effect on the vehicle's road  
holding - risk of accident!  
Driving with worn or damaged tyres reduces the  
braking and road holding performance of the  
vehicle. Regularly check the condition of the tyres  
(tread and sidewalls) and rims as well as the  
presence of the valve caps.  
Timing and accessory kits  
Brake disc wear  
For information on checking brake disc  
wear, contact a dealer or a qualified  
workshop.  
The timing and accessory kits are used  
from the time the engine is started until it  
is switched off. It is normal for them to wear over  
time.  
When the wear indicators no longer appear set  
back from the tread, the depth of the grooves is  
less than 1.6 mm; replace the tyres as soon as  
possible.  
A faulty timing or accessory kit can damage  
the engine, rendering it unusable. Observe the  
recommended replacement frequency, stated in  
distance travelled or time elapsed, whichever is  
reached first.  
Electric parking brake  
This system does not require any routine  
servicing. However, in the event of a  
problem, do not hesitate to have the system  
checked by a dealer or a qualified workshop.  
Using different size wheels and tyres from those  
specified can affect the lifetime of tyres, wheel  
rotation, ground clearance, the speedometer  

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