2022 PEUGEOT 308 check engine

171
Practical information
7Brake 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.
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.
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.
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.
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.
Once the pressure has dropped, remove the cap
and top up to the required level.
Screenwash fluid
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).
Filling with pure water is prohibited in all
circumstances (risk of freezing,
limescale, etc.).
Diesel fuel additive (Diesel
with particle filter)
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
The topping up of this additive must be carried
out quickly.
Go to a PEUGEOT dealer or a qualified
workshop.
AdBlue® (BlueHDi)
An alert is triggered when the reserve level is
reached.
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.
Checks
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 PEUGEOT
dealer or a qualified workshop.
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.

172
Practical information
12 V battery
The battery does not require any maintenance.
Check regularly that the terminals are correctly
tightened (versions without quick-release
terminals) and that the connections are clean.
For more information on the precautions
to take before any work on the 12 V
battery, refer to the corresponding section.
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 PEUGEOT dealer or a qualified workshop.
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 .
A clogged passenger compartment filter
can adversely affect air conditioning
system performance and generate
undesirable odours.
Air filter
Depending on the environment and the
use of the vehicle (e.g. dusty atmosphere,
city driving), change it twice as often, if
necessary .
Oil filter
Change the oil filter each time the engine
oil is changed.
Particle filter (Diesel)
The start of clogging of the particle filter is
indicated by the temporary lighting of this
warning lamp, accompanied by an alert
message.
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.
If the warning lamp stays on, this
indicates a low Diesel additive level.
For more information on Checking levels,
refer to the corresponding section.
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.
New vehicle
During the first few particle filter
regeneration operations, you may notice a
"burning" smell. This is perfectly normal.
Manual gearbox
The gearbox does not require any maintenance (no oil change).
Automatic gearbox
The gearbox does not require any maintenance (no oil change).
Brake pads
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.
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.

173
Practical information
7Brake disc wear
For information on checking brake disc
wear, contact a PEUGEOT dealer or a
qualified workshop.
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 PEUGEOT dealer or a qualified
workshop.
For more information on the Electric
parking brake, refer to the
corresponding section.
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.
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! 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.
Fitting different tyres on the front and rear axles
can cause the ESC to mistime.
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.
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.
Timing and accessory kits
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.
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.
AdBlue® (BlueHDi)
To respect the environment and ensure 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.
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.
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

175
Practical information
7Never pour the AdBlue® into the Diesel
fuel tank.
If any AdBlue® is splashed, or if there are
any spillages on the bodywork, rinse
immediately with cold water or wipe with a
damp cloth.
If the fluid has crystallised, clean it off using a
sponge and hot water.
Important: in the event of a top-up after
a breakdown because of a lack of
AdBlue, it is essential to wait around 5
minutes before switching on the ignition,
without opening the driver’s door,
unlocking the vehicle, inserting the key
into the ignition switch, or bringing the
key for the "Keyless Entry and Start"
system into the passenger compartment.
Switch on the ignition, then wait for 10
seconds before starting the engine.
►

Switch off the ignition and remove the key
from the switch to switch off the engine.
or
►


With Keyless Entry and Start, press the
"

START/STOP" button to switch off the engine.


► Turn the blue cap of the AdBlue® tank anti-
clockwise and remove it.
►

With a container of

AdBlue
®: after checking
the expiry date, read the instructions on the
label carefully before pouring the contents of the
container into the vehicle's AdBlue tank.
►

With an


AdBlue® pump: insert the nozzle and
fill the tank until the nozzle automatically cuts
out.
In order not to overfill the AdBlue® tank:
–
Add between 10 and 13 litres using
AdBlue® containers.
–
Stop after the nozzle’ s first automatic cut-
out, if you are refilling at a service station.
The system only registers AdBlue
® top-ups of
5

litres or more.
If the AdBlue® tank is completely empty
– which is confirmed by the message
“Top up

AdBlue: Starting impossible ” – it is
essential to add at least 5 litres.
Free-wheeling
In certain situations, it is necessary to put the
vehicle into free-wheeling mode (e.g. towing, on
a rolling road, automatic car wash (Wash mode),
rail or sea transport).
With a manual gearbox and
electric parking brake
/
To release them
► With the engine running and while depressing
the brake pedal, move the gear selector to the
neutral position.
►

While depressing the brake pedal, switch off
the ignition.
►


Release the brake pedal, then switch on the
ignition again.
►


While depressing the brake pedal, press the
control lever to release the parking brake.
►


Release the brake pedal, then switch off the
ignition.
Reverting to normal operation
► While depressing the brake pedal, restart the
engine.

189
In the event of a breakdown
8► Remove the fixing screw(s) from the access
flap located under the bumper using a Torx
screwdriver.
►

Unclip the access flap.
►


T
urn the bulb holder a quarter turn and
remove it.
►

For the foglamp: turn the bulb a quarter turn
and replace it.
►


For the reversing lamp: pull out the bulb and
replace it.
When changing the bulb within a few
minutes of switching off the ignition, take
care not to touch the exhaust - risk of burns!
Fuses
Changing a fuse
All work must be carried out only by a
PEUGEOT dealer or a qualified workshop
The replacement of a fuse by a third party
could cause a serious malfunction of the
vehicle.
Installing electrical accessories
The vehicle's electrical system is
designed to operate with standard or optional
equipment.
Before fitting other electrical equipment
or accessories to your vehicle, contact a
PEUGEOT dealer or a qualified workshop.
PEUGEOT accepts no responsibility for
the cost incurred in repairing the vehicle
or for rectifying malfunctions resulting from
the installation of accessories not supplied or
not recommended by PEUGEOT and not
installed in accordance with its
recommendations, in particular when the
combined power consumption of all of the
additional equipment connected exceeds 10
milliamperes.
12 V battery/Accessory
batteries
Lead-acid starter batteries
These batteries contain harmful
substances (sulphuric acid and lead).
They must be disposed of in accordance
with regulations and must never under any
circumstances be discarded with household
waste.
Dispose of used batteries at a designated
collection point.
Protect your eyes and face before
handling the battery.
All operations on the battery must be carried
out in a well ventilated area and away from
naked flames and sources of sparks, to avoid
any risk of explosion or fire.
Wash your hands afterwards.
Electronic control units/LED
technology headlamps
Never connect the negative jump lead to the
metal part of the electronic control units
or at
the back of the headlamps.
Risk of destroying the electronic control
units
and/or headlamps!
Connect to the remote earth point provided
for this purpose.
Frozen battery
Never try to charge a frozen battery - risk
of explosion!
If the battery has frozen, have it checked by a
PEUGEOT dealer or by a qualified workshop,
who will verify that the internal components
have not been damaged and that the case
has not cracked, which could lead to a risk of
leakage of toxic and corrosive acid.
Automatic gearbox
Never try to start the engine by pushing
the vehicle.
Symbols
No sparks or naked flames, no smoking.
Always protect your eyes. Explosive gases can cause blindness and injury.

190
In the event of a breakdown
Keep the vehicle's battery out of the reach
of children.
The vehicle's battery contains sulphuric acid which can make you go blind or
cause severe burns.
For more information, refer to the
handbook.
Explosive gases can be present close to
the battery.
With petrol/Diesel engines
Procedure for starting the engine using another
battery or for charging a discharged battery.
Accessing the battery
The battery is located under the bonnet.

For access to the (+) terminal:
► Release the bonnet by pulling the internal
release lever
, then the external safety catch.
►

Raise the bonnet.
(+)

Positive terminal with a quick-release
terminal.
(-) Negative terminal.
As the battery's negative terminal is not
accessible, a remote earth point is located near
the battery.
Starting using another battery
If the vehicle's battery is flat, the engine can be
started using a backup battery (either external or
from another vehicle) and jump leads or using a
battery booster.
Never start the engine by connecting a
battery charger.
Never use a 24
V or higher battery booster.
Check beforehand that the backup battery
has a nominal voltage of 12
V and a capacity
at least equal to that of the discharged
battery.
The two vehicles must not be in contact with
each other.
Switch off all electricity-consuming equipment
on both vehicles (audio system, wipers,
lighting, etc.).
Make sure that the jump leads are well away
from the engine’s moving parts (fan, belt,
etc.).
Do not disconnect the (+) terminal while the
engine is running.


► Lift the plastic cover on the (+) terminal, if the
vehicle has one.
►

Connect the red cable to the (+) terminal of
flat battery

A (at the metal elbow), then to the
(+) terminal of the backup battery
B or of the
booster.
►

Connect one end of the green or black cable
to the (-) terminal of the backup battery

B or of
the booster (or to an earth point on the assisting
vehicle).
►

Connect the other end of the green or black
cable to the earth point


C
.
►

Start the engine on the assisting vehicle and
leave it running for a few minutes.
►


Operate the starter on the broken down
vehicle and let the engine run.
If the engine does not start immediately

, switch
off the ignition and wait a few moments before
trying again.
►

W
ait for it to return to idle.
►

Disconnect the jump leads in reverse order.
►


Refit the plastic cover to the (+) terminal, if
the vehicle has one.

223
Alphabetical index
A
ABS 32
Accelerated charging unit (Wallbox)
154–155
Accessories

29
Active LED Vision

26, 28
Active Safety Brake

135–137
AdBlue®

18, 124
AdBlue® tank

125
Additive, Diesel

171–172
Adjusting headlamps

25
Adjusting head restraints

20
Adjusting seat

44–45
Adjusting the air distribution

53–55
Adjusting the air flow

53–55
Adjusting the height and reach of
the steering wheel

24
Adjusting the lumbar support

21
Adjusting the seat angle

21
Adjusting the temperature

30
Adjusting the time

169
Advice on care and maintenance

104, 127
Advice on driving

7, 97–98
Airbags

37, 39, 41
Airbags, curtain

87–88
Airbags, front

87–88, 41
Airbags, lateral

87–88
Air conditioning

52–53, 31
Air conditioning, automatic

32
Air conditioning, dual-zone automatic

29
Air intake

55–56
Air vents

28
Alarm 38–39
Amplifier, audio
36
Anti-lock braking system (ABS)

32
Antitheft / Immobiliser

16
Applications

24–25
Armrest, front

36
Armrest, rear

38
Assistance call

79–80
Assistance, emergency braking

33, 88
Audible warning

30
Audio streaming (Bluetooth)

166
B
Battery, 12 V 118, 123, 189–193
Battery, ancillaries
140
Battery, charging

140, 142, 144
Battery, remote control

20
Blanking screen (snow shield)

11 7
Blind

28
BlueHDi

18, 122, 130
Bluetooth (hands-free)

163
Bluetooth (telephone)

212–213
Bodywork

128
Bonnet

168–169
Boot

34–35, 24, 42
Brake discs

172–173
Brake lamps

139
Brakes

172–173
Braking

57
Braking assistance system

81–82
Braking, automatic emergency 135–137
Braking, dynamic emergency
103–104
Bulbs (changing)

187–188
C
Capacity, fuel tank 102
Care of the bodywork
128
Central locking

18
Changing a bulb

187–188
Changing a fuse

140
Changing a wheel

131, 135
Changing a wiper blade

33
Changing the remote control battery

20
Charge level indicator (Rechargeable
hybrid)

20
Charger, induction

35
Charger, wireless

35
Charging cable

107
Charging cable (Rechargeable
hybrid)

154–155, 111
Charging connector (Rechargeable
hybrid)

105, 159–160
Charging flap (Rechargeable
hybrid)

105, 159–160
Charging the traction battery
(Rechargeable hybrid)

20, 103, 159–160
CHECK

20
Checking the engine oil level

18
Checking the levels

169–171

224
Alphabetical index
Checking tyre pressures
(using the kit)
132, 134
Checks

120, 171–173
Checks, routine

171–173
Child lock

47
Children

36, 91–93
Children (safety)

47
Child seats

36, 88–91
Child seats, conventional

42, 44, 46
Child seats, i-Size

44, 46
Child seats, ISOFIX

91–93, 46
Cleaning (advice)

104, 176–178
Closing the boot

17, 21
Closing the doors

30–31, 21
Collision Risk Alert

135–136
Configuration, vehicle

10, 23
Connection, Bluetooth

212–213
Connectivity

168
Consumption figures

23
Container, AdBlue®

125
Control, emergency boot release

21
Control, emergency door

19
Control, heated seats

46–47
Controls, steering mounted

105–106
Control stalk, lighting

67–68
Control stalk, wipers

73–75
Control unit

154–156, 111
Courtesy lamp, front

37
Courtesy lamps

37
Cruise control

117–118, 120–122
Cruise control, adaptive

117–118, 122–123Cruise control by speed limit
recognition
117–118
D
Date (setting) 169
Daytime running lamps
25
Deactivating the passenger airbag

38, 41
Deadlocking

15, 17
Deferred charging

24, 112
Deferred charging (Rechargeable
hybrid)

24–25, 105, 110
Defrosting

24, 32
Defrosting, front

32
Demisting

24, 32
Demisting, front

32
Demisting, rear

32
Demisting, rear screen

32
Diagnosis, vehicle

20
Dials and gauges

9
Digital instrument panel

9
Dimensions

153
Dipstick

18, 121
Direction indicators

25, 139
Display screen, instrument panel

10–11
Domestic charging

107
Domestic charging (Rechargeable hybrid)

111
Doors

21
Drive Assist Plus

122–123
Driver’s attention warning

138–139
Driving

43–44, 97–98, 65
Driving abroad 29
Driving aids camera (warnings)
64
Driving aid shortcuts

66
Driving aids (recommendations)

64
Driving economically

7
Driving modes

107–108
Driving positions (storing)

22
Dynamic stability control (DSC)

33
E
EBFD 32
Eco-driving (advice)
7
ECO mode

59
Economy mode

11 8
Electronic brake force distribution (EBFD)

32
Emergency braking assistance (EBA)

33
Emergency call

79–80
Emergency switching off

101–102
Emergency warning lamps

29, 130
Emissions control system, SCR

19, 124
Energy economy mode

11 8
Energy flows

23
Energy recovery

20, 57
Engine

124
Engine compartment

168–169
Engine, Diesel

102, 120, 130
Engine, petrol

60, 120
Engines

148
Environment

7, 20
e-Save function (energy reserve)

24