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Practical information -> Checks for Your Peugeot 308 4 Door 2021-2025

Practical information  
Once the pressure has dropped, remove the cap  
and top up to the required level.  
Brake fluid  
The level of this fluid should be close to  
the "MAX" mark. If not, check the brake  
pads for wear.  
To know how often the brake fluid should be  
replaced, refer to the manufacturer's servicing  
schedule.  
AdBlue® (BlueHDi)  
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An alert is triggered when the reserve level is  
reached.  
Screenwash fluid  
For more information on the Indicators and in  
particular the AdBlue range indicators, refer to  
the corresponding section.  
To avoid the vehicle being immobilised in  
accordance with regulations, you must top up the  
AdBlue tank.  
For more information on AdBlue® (BlueHDi),  
and in particular the supply of AdBlue, refer to  
the corresponding section.  
Top up to the required level when  
necessary.  
Fluid specification  
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  
appropriate for the temperature conditions  
must be used in order to protect the system's  
components (pump, tank, ducts, jets).  
Clean the cap before removing it to refill.  
Use only DOT4 brake fluid from a sealed  
container.  
Engine coolant  
It is normal to top up this fluid between  
two services.  
Checks  
Unless otherwise indicated, check these  
components in accordance with the  
manufacturer's service schedule and according  
to your engine.  
Filling with pure water is prohibited in all  
circumstances (risk of freezing,  
limescale, etc.).  
The check and top-up must only be done with  
the engine cold.  
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.  
Otherwise, have them checked by a PEUGEOT  
dealer or a qualified workshop.  
Diesel fuel additive (Diesel  
with particle filter)  
If the level is close to or below the "MIN" mark, it  
is essential to top it up.  
When the engine is hot, the temperature of the  
coolant is regulated by the fan.  
As the cooling system is pressurised, wait at  
least one hour after switching off the engine  
before carrying out any work.  
Only use products recommended by  
PEUGEOT or products of equivalent  
quality and specification.  
In order to optimise the operation of  
components as important as those in the  
braking system, PEUGEOT selects and offers  
very specific products.  
On reaching the minimum level in the  
particle filter additive tank, this warning  
lamp comes on fixed, accompanied by an  
audible signal and a warning message.  
Topping up  
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.  
The topping up of this additive must be carried  
out quickly.  
Go to a PEUGEOT dealer or a qualified  
workshop.  
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Practical information  
New vehicle  
12 V battery  
Air filter  
During the first few particle filter  
regeneration operations, you may notice a  
"burning" smell. This is perfectly normal.  
The battery does not require any  
Depending on the environment and the  
maintenance.  
use of the vehicle (e.g. dusty atmosphere,  
city driving), change it twice as often, if  
necessary.  
Check regularly that the terminals are correctly  
tightened (versions without quick-release  
terminals) and that the connections are clean.  
Manual gearbox  
Oil filter  
The gearbox does not require any  
maintenance (no oil change).  
For more information on the precautions  
to take before any work on the 12 V  
battery, refer to the corresponding section.  
Change the oil filter each time the engine  
oil is changed.  
Automatic gearbox  
Particle filter (Diesel)  
The gearbox does not require any  
maintenance (no oil change).  
Versions equipped with Stop & Start are  
fitted with a 12 V lead-acid battery of  
specific technology and specification.  
The start of clogging of the particle filter is  
indicated by the temporary lighting of this  
warning lamp, accompanied by an alert  
message.  
Brake pads  
Its replacement should be carried out only by  
a PEUGEOT dealer or a qualified workshop.  
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.  
Unless there is a leak in the circuit, a drop in the  
brake fluid level indicates that the brake pads  
are worn.  
As soon as the traffic conditions permit,  
regenerate the filter by driving at a speed of at  
least 37 mph (60 km/h) until the warning lamp  
goes off.  
Passenger compartment  
filter  
Depending on the environment and the  
use of the vehicle (e.g. dusty atmosphere,  
city driving), change it twice as often, if  
necessary.  
If the warning lamp stays on, this  
indicates a low Diesel additive level.  
For more information on Checking levels,  
refer to the corresponding section.  
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.  
A clogged passenger compartment filter  
can adversely affect air conditioning  
system performance and generate  
undesirable odours.  
Following prolonged operation of the  
vehicle at very low speed or at idle, you  
may, in exceptional circumstances, notice  
water vapour coming from the exhaust while  
accelerating. These emissions have no  
impact on the vehicle’s behaviour and the  
environment.  
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Practical information  
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.  
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.  
Using different size wheels and tyres from those  
specified can affect the lifetime of tyres, wheel  
rotation, ground clearance, the speedometer  
reading and have an adverse effect on road  
holding.  
Brake disc wear  
For information on checking brake disc  
wear, contact a PEUGEOT dealer or a  
qualified workshop.  
Timing and accessory kits  
7
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.  
Electric parking brake  
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.  
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 PEUGEOT dealer or a qualified  
workshop.  
AdBlue® (BlueHDi)  
To respect the environment and ensure  
For more information on the Electric  
parking brake, refer to the  
corresponding section.  
Fitting different tyres on the front and rear axles  
can cause the ESC to mistime.  
compliance with the Euro 6 standard, without  
adversely affecting the performance or fuel  
consumption of its Diesel engines, PEUGEOT  
has taken the decision to equip its vehicles with  
a system that combines SCR (Selective Catalytic  
Reduction) with a Diesel Particle Filter (DPF) for  
the treatment of exhaust gases.  
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  
Wheels and tyres  
The inflation pressure of all tyres,  
including the spare wheel, must be  
checked on "cold” tyres.  
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.  
identified by this symbol on their  
sidewalls.  
SCR system  
Using a liquid called AdBlue® that contains  
urea, a catalytic converter turns up to 85% of  
the nitrogen oxides (NOx) into nitrogen and  
water, which are harmless to health and the  
environment.  
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.  
For your safety and driving comfort, it is  
important to have them regularly checked by a  
PEUGEOT dealer or a qualified workshop.  
Under-inflation increases energy  
consumption. Non-compliant tyre  
pressures cause tyres to wear prematurely  
and have an adverse effect on the vehicle's  
road holding - risk of accident!  
The AdBlue® is contained in a special  
tank holding about 15 litres.  
Its capacity allows a driving range of  
approximately 3,900 miles (6,500 km), which  
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