2021 PEUGEOT 508 check engine

101
Driving
6Do not exceed the maximum towable
weights.
At altitude: reduce the maximum load by
10% per 1,000 metres of altitude; the lower
air density at high altitudes decreases engine
performance.
New vehicle: do not tow a trailer until the
vehicle has driven at least 620 miles
(1,000 kilometres).
If the outside temperature is high, let the
engine idle for 1 to 2 minutes after the
vehicle comes to a stop, to help it to cool.
Before setting off
Nose weight
► Distribute the load in the trailer so that the
heaviest items are as close as possible to the
axle and the nose weight (at the point where it
joins your vehicle) approaches the maximum
permitted without exceeding it.
Tyres
► Check the tyre pressures of the towing
vehicle and of the trailer , observing the
recommended pressures.
Lighting
► Check the electrical signalling on the trailer
and the headlamp beam height of your vehicle.
If a genuine PEUGEOT towing device is
used, the rear parking sensors will be
deactivated automatically to avoid the audible
signal.
When driving
Cooling
Towing a trailer uphill causes the coolant
temperature to increase. The maximum towable
load depends on the gradient and the exterior
temperature. The fan’s cooling capacity does not
increase with engine speed.
►

Reduce speed and lower the engine speed to
limit the amount of heating produced.
►


Pay constant attention to the coolant
temperature.
If this warning lamp and the STOP
warning lamp come on, stop the
vehicle and switch off the engine as soon as
possible.
Brakes
Using the engine brake is recommended to limit
the overheating of the brakes. Braking distances
are increased when towing a trailer.
Side wind
Bear in mind that the vehicle will be more
susceptible to wind when towing.
Anti-theft protection
Electronic immobiliser
The keys contain a code, which must be
recognised by the vehicle before starting is
possible.
If the system malfunctions, indicated by the
display of a message, the engine will not start.
Contact a PEUGEOT dealer.
Starting/switching off the
engine
The electronic key must be present in the passenger compartment.
If the electronic key is not detected, a
message is displayed.
Move the electronic key so that the engine
can be started or switched off.
If there is still a problem, refer to the "Key
not detected - Back-up starting or Back-up
switch-off" section.

102
Driving
Starting

► With an automatic gearbox, select mode P
or N and press the brake pedal.
►

Press the "
START/STOP" button while
maintaining pressure on the pedal until the
engine starts.
Diesel engines
In negative temperatures and/or when the
engine is cold, starting takes place only after the
preheating warning lamp goes out.
If this warning lamp comes on after
pressing the " START/STOP" button:
►

Keep the pedal fully depressed and do not
press the "

START/STOP" button again until the
engine is running.
In all circumstances, if one of the starting
conditions is not met, a message is displayed.
In some circumstances, a message indicates
that it is necessary to turn the steering wheel
while pressing the " START/STOP" button to
assist unlocking of the steering column.
Petrol engines
With Petrol engines, after a cold start,
pre-heating the catalytic converter can cause
noticeable engine vibrations, for anything up
to 2 minutes (accelerated idle speed).
Starting rechargeable hybrid
vehicles
► Fully depress the brake pedal and press
the START/STOP button for approximately 2
seconds.
► Keep your foot on the pedal until this
indicator lamp comes on, indicating the
activation of the rechargeable hybrid system
(confirmed by an audible signal).
To exit Park mode, wait for the READY indicator lamp to come on.
By default, the system starts in Electric mode.
Depending on certain parameters (battery
charge level or outside temperature), the system
determines whether it is necessary to start the
petrol engine.
It is possible to change the driving mode at any
time using the mode selector.
When the vehicle starts in electric mode,
it makes no noise.
Pay particular attention to pedestrians and
cyclists who may not hear the vehicle coming
despite the pedestrian horn.
Switching off
► Immobilise the vehicle using the parking
brake.
►

With an
automatic gearbox, ideally select
mode
P or N.
►

Press the "
START/STOP" button.
►

For rechargeable hybrid vehicles, before
leaving the vehicle, check that the READY


indicator lamp is switched off.
In some circumstances, it is necessary to turn
the steering wheel to lock the steering column.
On certain versions with an automatic gearbox
(EAT6/EAT8), the steering column does not lock,
but the gearbox locks in mode P.
If the vehicle is not immobilised, the
engine will not stop.
With the engine off, the braking and
steering assistance systems are also cut
off - risk of loss of control of the vehicle!
Never leave your vehicle with the
electronic key still inside.
Switching on the ignition
without starting the engine


With the electronic key in the passenger
compartment, pressing the " START/STOP"
button, without depressing any of the pedals ,
allows the ignition to be switched on without
starting the engine.
► Press this button again to switch off the
ignition and allow the vehicle to be locked.
Key not detected
Back-up starting
A back-up reader is fitted to the steering column,
to enable the engine to be started if the system
fails to detect the key in the recognition zone, or
if the battery in the electronic key is flat.

104
Driving
► To apply the parking brake, briefly pull the
control.
►
T
o release it, briefly push the control while
pressing the brake pedal.
Automatic mode is activated by default.
This automatic operation can be deactivated in
certain situations.
Indicator lamp
This indicator lamp comes on both on the instrument panel and on the control to
confirm that the parking brake has been applied,
accompanied by display of the message
"Parking brake applied".
The indicator lamp goes out to confirm the
release of the parking brake, accompanied by
the display of the message " Parking brake
released ".
The indicator lamp flashes in response to a
manual request to apply or release the brake.
In the event of a battery failure, the
electric parking brake will not operate.
As a safety measure, with an automatic
gearbox, if the parking brake is not applied,
immobilise the vehicle by placing the supplied
chocks against one of the wheels.
Contact a PEUGEOT dealer or a qualified
workshop.


Before leaving the vehicle, check that the
parking brake is applied: the parking
brake indicator lamps on the instrument panel
and the control must be on fixed.
If the parking brake is not applied, there is an
audible signal and a message is displayed on
opening the driver's door.
Never leave a child alone inside the
vehicle, as they could release the parking
brake.
When the vehicle is parked: on a
steep slope, heavily loaded or during
towing
With an automatic gearbox, turn the wheels
toward the pavement and select mode

P
.
When towing, the vehicle is approved for
parking on slopes of up to 12%.
Manual operation
Manual release
With the ignition on or engine running:
► Press the brake pedal.
► While maintaining pressure on the brake
pedal, briefly push the control.
If the brake pedal is not depressed, the
parking brake is not released and a
message is displayed.
Manual application
With the vehicle stationary:
► Briefly pull the control.
The control indicator lamp flashes to confirm the
application request.
Automatic operation
Automatic release
First ensure that the engine is running and that
the driver's door is closed.
The electric parking brake gradually releases
automatically as the vehicle moves off.
With an automatic gearbox
►

Depress the brake pedal.
►


Select mode
D, M or R.
►

Release the brake pedal and depress the
accelerator pedal.
If the brake does not release
automatically, check that the front doors
are fully closed.
When stationary with the engine running,
do not depress the accelerator pedal
unnecessarily. Risk of parking brake release.
Automatic application
With the vehicle stationary, the parking brake
is applied automatically when the engine is
switched off.
It is not applied automatically if the
engine stalls or enters STOP mode with
Stop & Start.
In automatic mode, the parking brake
can be manually applied or released at
any time using the control.
Special cases
Immobilising the vehicle with the
engine running
To immobilise the vehicle with the engine
running, briefly pull the control.
Parking the vehicle with the brake
released
In very cold conditions (ice), applying the
parking brake is not recommended.
To immobilise the vehicle, engage a gear or
place the chocks against one of the wheels.

108
Driving
sound. It will stop when you close the driver's
door again.
Special aspects of automatic mode
The gearbox selects the gear that provides
optimal performance based on ambient
temperature, road profile, vehicle loading and
driving style.
For maximum acceleration, press the accelerator
fully down (kick-down). The gearbox changes
down automatically or holds the selected gear
until the maximum engine speed is reached.
Steering mounted controls allow the driver to
temporarily select a gear, if the vehicle speed
and engine speed conditions permit.
Special aspects of manual mode
The gearbox only changes from one gear to
another if the vehicle speed and engine speed
conditions permit.
Starting the vehicle
From mode P:
► Fully depress the brake pedal.
►

Start the engine.
►


Maintaining pressure on the brake pedal,
press the

Unlock button.
►

Push once or twice rearwards to select
the automatic mode

D, or forwards to engage
reverse
R.
From neutral
N:
►

Fully depress the brake pedal.
► Start the engine.
► Maintaining pressure on the brake pedal,
push rearwards to select the automatic mode

D
,
or forwards, while pressing the Unlock
button to
engage reverse

R
.
Then, from
D or R:
►

Release the brake pedal.
►


Accelerate gradually to automatically release
the electric parking brake.
The vehicle moves off immediately

.
Automatic gearbox
Never try to start the engine by pushing
the vehicle.
Switching the vehicle off
Regardless of the current gearbox mode, mode
P is immediately engaged automatically when
the ignition is switched off.
However, in mode N, mode P will be engaged
after a delay of 5 seconds (time to enable free-
wheeling mode).
Check that mode
P has been engaged and
that the electric parking brake was applied
automatically; if not, apply it manually.
The corresponding indicator lamps on the gear selector and the electric parking
brake control must be on, as well as the
indicator
lamps on the instrument panel.
Gearbox malfunction
This warning lamp comes on, accompanied by an audible signal and the
display of a message.
Go to a PEUGEOT dealer or a qualified
workshop.
Do not drive faster than 62
mph (100 km/h),
keeping to the speed limit.
Switching of the gearbox to back-up mode
Mode D locks in third gear.
The paddles on the steering wheel do not work
and mode M is no longer accessible.
You may feel a significant jolt on engaging
reverse gear. This will not damage the gearbox.
Selector malfunction
Minor malfunction
This warning lamp comes on, accompanied by the display of a message
and an audible signal.
Drive carefully.
Go to a PEUGEOT dealer or a qualified
workshop.
In some cases, the selector indicator lamps may
no longer come on, but the gearbox state is still
displayed on the instrument panel.
Major malfunction
This warning lamp comes on, accompanied by the display of a
message.
You must stop the vehicle.
Stop as soon as it is safe to do so and
switch off the ignition.
Contact a PEUGEOT dealer or a qualified
workshop.
e-EAT8 electric automatic
gearbox (Rechargeable
hybrid)
Automatic 8-speed gearbox with a push selector and regenerative braking function.
With the exception of manual mode and
regenerative braking, the operation is identical to
that of other EAT8 gearboxes.
For more information on the Operation or the
Malfunctions of the EAT8 gearbox, refer to the
corresponding sections.
Gearbox selector positions
P. Car park
For parking the vehicle: the front wheels
are blocked.
R. Reverse gear
N. Neutral
For moving the vehicle with the ignition
off: in certain car washing machines,
when towing the vehicle, etc.

11 0
Driving
to depress the brake pedal. When the driver
releases the accelerator pedal, the vehicle slows
down more quickly.
The energy recovered when the accelerator
pedal is released is used to partially recharge the
traction battery.
This partial recharging has no effect on the charge level indicator.
The resulting deceleration of the vehicle does not cause the brake lamps to come
on.
►

From mode
D/B, move the push selector
backwards to activate/deactivate the function.
D on the instrument panel is replaced with B.
The state of the function is not saved when the
ignition is switched off.
In some situations (e.g. battery full,
extreme temperatures), the amount of
regenerative braking may be temporarily
limited, resulting in less deceleration.
The driver must remain alert to traffic
conditions and must always be ready to use
the brake pedal.
Regenerative braking using the brake
pedal
Energy recovery can also be produced
by depressing the brake pedal in order to
partially recharge the traction battery, without
affecting the charge level indicator.
Hill start assist
This system keeps your vehicle briefly stationary
(for approximately 2 seconds) when making a hill
start, while you transfer your foot from the brake
pedal to the accelerator pedal.
This system is only active when:
–

The vehicle is completely stationary
, with your
foot on the brake pedal.
–

Certain slope conditions are met.
–


The driver
’s door is closed.
Do not leave the vehicle while it is being
held temporarily by hill start assist.
If someone needs to get out of the vehicle
with the engine running, apply the parking
brake manually. After that, ensure that the
parking brake indicator lamp and the indicator
lamp
P in the electric parking brake control
lever are on fixed.
The hill start assist function cannot be deactivated. However, using the parking
brake to immobilise the vehicle interrupts its
operation.
Operation

Facing uphill, with the vehicle stationary,
the vehicle is held for a short time when the
driver releases the brake pedal:
–

If mode
D or M is selected on an automatic
gearbox.


Facing downhill, with the vehicle stationary
and reverse gear engaged, the vehicle is held
for a short time when the driver releases the
brake pedal.
Malfunction
If the event of a malfunction, these
warning lamps light up on the
instrument panel, accompanied by the display of
a message.
Have it checked by a PEUGEOT dealer or a
qualified workshop.
Active Suspension Control
This system adapts the vehicle suspension
according to the road condition and profile, the
vehicle load, the driving style and the selected
driving mode.
The system uses a computer and sensors, which
determine the optimal level of shock absorption
to be applied to each shock absorber.
The operation of the system depends on
the driving mode selected (depending on
equipment).
For more information on the Driving modes,
please refer to the corresponding section.
Malfunction
In the event of a malfunction, this warning
lamp lights up on the instrument panel.
Have it checked by a PEUGEOT dealer or a
qualified workshop.
Driving modes
The driving modes available depend on the engine and equipment of the vehicle.

111
Driving
6Malfunction
If the event of a malfunction, these
warning lamps light up on the
instrument panel, accompanied by the display of
a message.
Have it checked by a PEUGEOT dealer or a
qualified workshop.
Active Suspension Control
This system adapts the vehicle suspension
according to the road condition and profile, the
vehicle load, the driving style and the selected
driving mode.
The system uses a computer and sensors, which
determine the optimal level of shock absorption
to be applied to each shock absorber.
The operation of the system depends on
the driving mode selected
(depending on
equipment).
For more information on the Driving modes,
please refer to the corresponding section.
Malfunction
In the event of a malfunction, this warning
lamp lights up on the instrument panel.
Have it checked by a PEUGEOT dealer or a
qualified workshop.
Driving modes
The driving modes available depend on the engine and equipment of the vehicle. Driving modes are selected using the following
control:




► Press the control to display the modes on the
instrument panel.
►

Press the control again to change mode.
When the message disappears, the selected
mode is activated and remains indicated on the
instrument panel (except Normal

mode).
With petrol / Diesel engines
Whenever the ignition is switched on,
Normal driving mode is selected by default.
Eco
To reduce energy consumption by reducing the
performance of the heating and air conditioning,
without deactivating them.
Comfort
To achieve more comfortable driving and softer
suspension.
Normal
To restore the default settings.
Together with Active Suspension Control, this
mode offers the best compromise between
comfort and handling.
Sport
To obtain more dynamic driving with action on
the power steering, Active Suspension Control,
accelerator and gear changes (with an automatic
gearbox) and the possibility of displaying the
vehicle’s dynamic settings on the instrument
panel.
Manual
Permanent Manual mode with an automatic
gearbox and Full Park Assist.
To change gears manually using the control
paddles on the steering wheel.
Coasting mode
Depending on version or engine, with an
EAT8 gearbox and the gear selector in mode
D, except in
Sport mode, gradually and fully
releasing the accelerator pedal allows free-
wheeling which can save fuel.
A drop in engine speed is normal (rev counter
at idle, drop in engine noise).
With Rechargeable hybrid
engines
Whenever the ignition is switched on, Electric
driving mode is selected by default.

11 4
Driving
To deactivate/reactivate the function:



► Press the button.
A message on the instrument panel confirms the
change of status.
When the function is deactivated, the orange
indicator lamp is lit; if the engine was in standby,
it restarts immediately.
Associated indicator lamps
Function activated.
Function deactivated or malfunction.
Opening the bonnet
Before doing anything under the bonnet,
deactivate the Stop & Start system to avoid
any risk of injury caused by the engine
restarting automatically.
Driving on flooded roads
Before entering into a flooded area, it is
strongly recommended that you deactivate
the Stop & Start system.
For more information on Driving
recommendations, particularly on flooded
roads, refer to the corresponding section.
Operation
Main conditions for operation
– The driver ’s door must be closed.
– The driver's seat belt must be fastened.
–

The level of charge in the battery must be
sufficient.
–


The temperature of the engine must be within
its nominal operating range.
–


The outside temperature must be between
0°C and 35°C.
Putting the engine into standby
(STOP mode)
The engine automatically enters standby mode
as soon as the driver indicates their intention to
stop:
–

W
ith an automatic gearbox:
•

At speeds below 12 mph (20
km/h) on
BlueHDi versions, or below 0.6 mph (1
km/h)
on PureTech 180 and 225 versions, when
you brake firmly with the gear selector in
mode D.
• With the vehicle stationary , when you place
the gear selector in mode N.
Time counter
A time counter adds up the time spent in standby
during the journey. It is reset to zero every time
the ignition is switched on.
Special cases:
The engine will not go into standby if the
conditions for operation are not met and in the
following cases:
–

Steep slope (ascending or descending).
–


Needed
to maintain a comfortable temperature
in the passenger compartment.
–

Demisting active.
In these cases, this indicator lamp flashes
for a few seconds, then goes off.
After the engine has restarted, STOP mode is not available until the vehicle
has reached a speed of 5 mph (8
km/h).
During parking manoeuvres, STOP mode
is not available for a few seconds after
coming out of reverse gear or turning the
steering wheel.
Restarting the engine (START mode)
The engine automatically restarts as soon as the
driver indicates the intention of moving off again:
With an automatic gearbox:
– With the selector in mode D or M: with the
brake pedal released.
– With the selector in mode N and the brake
pedal released: with the selector at D or M.
– With the selector in mode P and the brake
pedal depressed: with the selector at R, N, D
or M.
– With reverse gear engaged.
Special cases
The engine will restart automatically if the
conditions for operation are met again and in the
following cases:
– With an automatic gearbox, in mode N, vehicle
speed exceeds 0.6 mph (1 km/h).
In these cases, this indicator lamp flashes
for a few seconds, then goes off.
Malfunctions
In the event of a fault with the system, this
warning lamp flashes for a few moments
on the instrument panel, then remains on,
accompanied by the display of a message.
Have it checked by a PEUGEOT dealer or a
qualified workshop.
The vehicle stalls in STOP mode
All of the instrument panel warning lamps come
on if there is a fault.
► Switch off the ignition then start the engine
again with the " START/STOP" button.

11 5
Driving
6– With the selector in mode D or M: with the
brake pedal released.
–

With the selector in mode
N and the brake
pedal released: with the selector at D or M.
–

With the selector in mode
P and the brake
pedal depressed: with the selector at R, N, D
or M.
–

With reverse gear engaged.
Special cases
The engine will restart automatically if the
conditions for operation are met again and in the
following cases:
–
With an automatic gearbox, in mode N

, vehicle
speed exceeds 0.6 mph (1
km/h).
In these cases, this indicator lamp flashes
for a few seconds, then goes off.
Malfunctions
In the event of a fault with the system, this
warning lamp flashes for a few moments
on the instrument panel, then remains on,
accompanied by the display of a message.
Have it checked by a PEUGEOT dealer or a
qualified workshop.
The vehicle stalls in STOP mode
All of the instrument panel warning lamps come
on if there is a fault.
►

Switch off the ignition then start the engine
again with the " ST

ART/STOP" button.
12 V battery
The Stop & Start system requires a
12 V battery of specific technology and
specification.
All work must be carried out only by a
PEUGEOT
dealer or a qualified workshop
Under-inflation detection
This system alerts the driver when one or more tyres have a drop in pressure.
The alert is raised when the vehicle is moving,
not when stationary.
It compares the information given by the wheel
speed sensors with reference values, which
must be reinitialised every time the tyre
pressures are adjusted or a wheel changed.
It takes the last values

stored during
the

reinitialisation request into account. It is
therefore essential that the tyre pressure is
correct during the operation. This operation is
the driver’s responsibility.
The tyre under-inflation detection cannot, in any circumstances, replace the need
for vigilance on the part of the driver.
This system does not avoid the need to
regularly check the tyre pressures (including
the spare wheel), especially before a long
journey.
Driving with under-inflated tyres, particularly
in adverse conditions (heavy load, high
speed, long journey):
– worsens road-holding.
– lengthens braking distances.
–

causes premature wear of the tyres.
–


increases energy consumption.
The inflation pressures defined for the vehicle can be found on the tyre pressure
label.
For more information on the Identification
markings, refer to the corresponding section.
Checking tyre pressures
This check should be done monthly
when the tyres are "cold" (vehicle stopped for
1 hour or after a journey of less than 6 miles
(10

km) at moderate speeds).
Otherwise, add 0.3 bar to the pressures
shown on the label.
Snow chains
The system does not have to be
reinitialised after fitting or removing snow
chains.
Under-inflation alert
This is signalled by the fixed illumination of this warning lamp, accompanied by an
audible signal and, depending on equipment, the
display of a message.
►

Reduce speed immediately
, avoid excessive
steering movements and avoid sudden braking.