sensor Peugeot 508 2020 User Guide
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Driving
Driving recommendations
► Observe the driving regulations and remain 
vigilant whatever the traffic conditions.
►
 
Monitor your environment and keep your 
hands on the wheel to be able to react to 
anything that may happen any time.
►
 
Drive smoothly
 , anticipate the need for 
braking and maintain a longer safety distance, 
especially in bad weather.
►
 
Stop the vehicle to carry out operations that 
require close attention (such as adjustments).
►
 
During long trips, take a break every two 
hours.
Important!
Never leave the engine running in a 
closed space without sufficient 
ventilation.  Internal combustion engines emit 
toxic exhaust gases such as carbon 
monoxide. Danger of poisoning and death!
In severe wintry conditions (temperature 
below -23°C), let the engine run for 4 
minutes before moving off, to ensure the 
correct operation and durability of the 
mechanical components of your vehicle 
(engine and gearbox).
Never drive with the parking brake 
applied . Risk of overheating and 
damage to the braking system!
Do not park the vehicle or leave the 
engine running on a flammable 
surface (dry grass, dead leaves, etc.).  The 
exhaust system of your vehicle is very hot, 
even several minutes after the engine stops. 
Risk of fire!
Never leave a vehicle unattended with 
the engine running.  If you have to leave 
your vehicle with the engine running, apply 
the parking brake and put the gearbox into 
neutral or position  N or P (depending on the 
type of gearbox).
Never leave children inside the vehicle 
unsupervised.
On flooded roads
We strongly advise against driving on flooded 
roads, as this could cause serious damage to 
the internal combustion engine or electric motor, 
the gearbox and the electrical systems of the 
vehicle.
 
 
If you are obliged to drive on a flooded road:
► Check that the depth of water does not 
exceed 15   cm, taking account of waves that 
might be generated by other users.
►
 
Deactivate the Stop & Start function.
►
 
Drive as slowly as possible without stalling. In 
all cases, do not exceed 6 mph (10
  km/h).
►
 
Do not stop and do not switch off the engine.
On leaving the flooded road, as soon as safety 
conditions allow
, make several light brake 
applications to dry the brake discs and pads.
If in doubt about the state of your vehicle, 
contact a PEUGEOT dealer or a qualified 
workshop.
Towing
Driving with a trailer places greater 
demands on the towing vehicle and 
particular care must be taken.
Do 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    
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Driving
6If 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 heating up.
In all cases, pay 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
Braking distances are increased when towing a 
trailer. To avoid overheating the brakes, the use 
of engine braking is recommended.
Side wind
Bear in mind that the vehicle will be more 
susceptible to wind when towing.
Anti-theft protection
Electronic immobiliser
The keys include an electronic engine 
immobiliser system, with a code that must be 
recognised in order for starting to be 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 it 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.
Starting 
 
► With a  manual gearbox, place the gear lever 
in neutral and fully depress the clutch pedal.
►
 
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.   
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Driving
6Operation 
 
On an ascending slope, with the vehicle 
stationary, the vehicle is held for a short time 
when you release the brake pedal:
– 
provided you are in first gear or neutral with a 
manual gearbox.
–
 
provided you are in mode  D
 or M with an 
automatic gearbox.
 
 
On a descending slope, with the vehicle 
stationary and reverse gear engaged, the 
vehicle is held for a short time when you 
release the brake pedal.
Malfunction
These warning lamps come on in  the event of a malfunction.
Contact a PEUGEOT dealer or a qualified 
workshop to have the system checked.
Active  Suspension Control
This suspension adapts itself to the following 
parameters: state and profile of the road, load 
of the vehicle, driving style and selected driving 
mode.
It is managed by a computer, which interprets 
the data transmitted by different sensors to 
apply the optimal level of damping to each shock 
absorber.
It offers three modes: Comfort, Normal and 
Sport.
The mode can be selected using the  DRIVE 
MODE control on the central console.
For more information on the  Driving modes, 
please refer to the corresponding section.
Driving modes
The number and type of driving modes available  depend on the vehicle’s engine and equipment.
Driving modes are selected using the following 
control:
 
 
 
 
Pressing the control displays the modes on the 
instrument panel.
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 
mode is selected by default.
ECO
This mode reduces fuel consumption, but 
restricts the performance of the heating and 
air conditioning systems, without however 
deactivating them.
Free-wheeling in  ECO mode: depending on 
version, with the EAT8 gearbox, moving into 
"free-wheeling" is encouraged to slow the vehicle 
down without using engine braking. You can 
save fuel by anticipating the need to slow down 
and lifting your foot fully off the accelerator pedal.   
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Driving
Putting the engine into standby 
(STOP mode)
The engine automatically goes into standby 
as soon as the driver indicates the intention of 
stopping.
– 
W
 ith a manual gearbox,  at a speed below 2 
mph (3
  km/h), when you place the gear lever in 
neutral and release the clutch pedal.
–
 
W
 ith an automatic gearbox:
•
 
at a speed below 12 mph (20
   km/h) for 
BlueHDi versions, or below 0.6 mph (1
  km/h) 
for PureTech 180 and 225 versions, when 
you brake hard 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 a journey. It resets to zero every time the 
ignition is switched on.
Special cases:
The engine will not go into standby if all of 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.
Engine restarting (START mode)
The engine automatically restarts as soon as the 
driver indicates the intention of moving off again.
►
 
W
 ith a manual gearbox: with the clutch 
pedal fully depressed.
►
 
W
 ith an automatic gearbox:
•
 
With the selector in position  D
 or M: with the 
brake pedal released.
•
 
With the selector in position  N
 and the brake 
pedal released: with the selector at  D or M.
•
 
With the selector in position  P
 and the brake 
pedal depressed: with the selector at  R, N, 
D or M.
•
 
Reverse gear engaged.
Special cases
The engine restarts automatically if all the 
operating conditions are met again and in the 
following cases.
– 
With a manual gearbox: vehicle speed 
exceeds 2.5 mph (4
  km/h),
–
 
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 malfunction, this warning 
lamp flashes for a few moments, then 
remains on, accompanied by an onscreen 
message.
Have the vehicle 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.
The Stop & Start system requires a 12 V 
battery of specific technology and 
specification.
All work concerning the battery must be 
carried out only by a PEUGEOT
 dealer or a 
qualified workshop.
Under-inflation detection
This system automatically checks the pressures  of the tyres while driving.
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.   
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Driving
Driving and manoeuvring 
aids - General 
recommendations
Driving and manoeuvring aids cannot, in 
any circumstances, replace the need for 
vigilance on the part of the driver.
The driver must comply with the Highway 
Code, must remain in control of the vehicle in 
all circumstances and must be able to retake 
control of it at all times. The driver must adapt 
the speed to climactic conditions, traffic and 
the state of the road.
It is the driver's responsibility to constantly 
check the traffic, to assess the relative 
distances and speeds of other vehicles and to 
anticipate their movements before indicating 
and changing lane.
The systems cannot exceed the limits of the 
laws of physics.
Driving aids
You should hold the steering wheel 
with both hands, always use the interior and 
exterior rear view mirrors, always keep the 
feet close to the pedals and take a break 
every two hours.
Manoeuvring aids
The driver must always check the 
surroundings of the vehicle before and during 
the whole manoeuvre, in particular using the 
mirrors.
Radar
The operation of the radar as well as the 
associated functions may be impaired through 
the accumulation of dirt (mud, frost, etc.), in 
certain difficult weather conditions (very heavy 
rain, snow) or if the bumper is damaged.
If the front bumper is to be repainted, contact 
a PEUGEOT dealer or a qualified workshop; 
certain types of paint could interfere with the 
operation of the radar.
 
 
Driving aids camera
This camera and its associated functions 
may be impaired or not work if the windscreen 
area in front of the camera is dirty, misty, 
frosty, covered with snow, damaged or 
masked by a sticker.
On versions with camera alone, this message 
indicates to you that the camera is obstructed: 
"Driving aids camera: visibility limited, see 
user guide".
In humid and cold weather, demist the 
windscreen regularly.
Poor visibility (inadequate street lighting, 
heavy rain, thick fog, snowfall), dazzle 
(headlamps of an oncoming vehicle, low sun, 
reflections on a damp road, leaving a tunnel, 
alternating shade and light) can also impair 
detection performance.
In the event of a windscreen replacement, 
contact a PEUGEOT dealer or a qualified 
workshop to recalibrate the camera; 
otherwise, the operation of the associated 
driving aids may be disrupted.
Other cameras
The images from the camera(s) 
displayed on the touch screen or on the 
instrument panel may be distorted by the 
relief.
In the presence of areas in shade, or in 
conditions of bright sunlight or inadequate 
lighting, the image may be darkened and with 
lower contrast.
Obstacles may appear further away than they 
actually are.
Sensors
The operation of the sensors as well as 
the associated functions may be disturbed 
by sound interference such as that emitted 
by noisy vehicles and machinery (e.g. lorries, 
pneumatic drills), by the accumulation of 
snow or dead leaves on the road or in the 
event of damaged bumpers and mirrors.
When reverse gear is engaged, an audible 
signal (long beep) indicates that the sensors 
may be dirty.
A front or rear impact to the vehicle can 
upset the sensors’ settings, which is not 
always detected by the system: distance 
measurements may be distorted.
The sensors do not systematically detect 
obstacles that are too low (pavements, studs) 
or too thin (trees, posts, wire fences).
Certain obstacles located in the sensors’ blind 
spots may not be detected or may no longer 
be detected during the manoeuvre.
Certain materials (fabrics) absorb sound 
waves: pedestrians may not be detected.
Maintenance
Clean the bumpers and door mirrors and 
the field of vision of the cameras regularly.
When washing your vehicle at high pressure, 
direct the spray from at least 30 cm away 
from the radar, sensors and cameras.
Mats
The use of mats not approved by 
PEUGEOT may interfere with the operation of 
the speed limiter or cruise control.
To avoid any risk of jamming the pedals:
►  ensure that the mat is secured correctly,
►  never fit one mat on top of another.   
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11 3
Driving
6When reverse gear is engaged, an audible 
signal (long beep) indicates that the sensors 
may be dirty.
A front or rear impact to the vehicle can 
upset the sensors’ settings, which is not 
always detected by the system: distance 
measurements may be distorted.
The sensors do not systematically detect 
obstacles that are too low (pavements, studs) 
or too thin (trees, posts, wire fences).
Certain obstacles located in the sensors’ blind 
spots may not be detected or may no longer 
be detected during the manoeuvre.
Certain materials (fabrics) absorb sound 
waves: pedestrians may not be detected.
Maintenance
Clean the bumpers and door mirrors and 
the field of vision of the cameras regularly.
When washing your vehicle at high pressure, 
direct the spray from at least 30
  cm away 
from the radar, sensors and cameras.
Mats
The use of mats not approved by 
PEUGEOT may interfere with the operation of 
the speed limiter or cruise control.
To avoid any risk of jamming the pedals:
►
 
ensure that the mat is secured correctly
 ,
►
 
never fit one mat on top of another
 .
Units of speed
Ensure that the units of speed displayed 
on the instrument panel (mph or km/h) are 
those for the country you are driving in.
If this is not the case, when the vehicle is 
stationary, set the display to the required 
units of speed so that it complies with what is 
authorised locally.
In case of doubt, contact a PEUGEOT dealer 
or a qualified workshop.
Speed Limit Recognition 
and Recommendation
Refer to the General recommendations on the 
use of driving and manoeuvring aids .
 
 
This system displays the maximum authorised 
speed in the instrument panel, according to 
the speed limits in the country in which you are 
driving, using:
–
 
Speed limit signs detected by the camera.
–
 
Speed limit details from the navigation system 
mapping.
You should update your navigation  mapping regularly in order to receive 
accurate speed limit information from the 
system.
–
 
Signs indicating an intersection area detected 
by the camera:
Sign detected Suggested speed  (calculated)
Entry into an 
intersection area Example:
 
 
Without PEUGEOT Connect Nav
10 mph or 20
  km/h 
(depending on 
the units of the 
instrument panel) With PEUGEOT  Connect NavDisplay of the 
speed in force in the 
country in which you  are driving.
–
 
Certain qualifier plates are detected by the 
camera:   
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11 4
Driving
Qualifier plate detected Display of the 
speed associated  with the qualifier  plate
Speed limit in rain Examples:
 
 
If the wiper control stalk is in the 
"intermittent wipe" 
or "automatic wipe"  position (in order 
to activate the rain  sensor):
68 mph (110
  km/h) 
(for example)
Speed limit if  towing
 
 
If an approved towing device is fixed to the  vehicle:
56 mph (90
  km/h) 
(for example)
Speed limit 
applicable over a  certain distance Example:
 
 
43 mph (70 km/h) 
(for example)
Qualifier plate  detected Display of the 
speed associated  with the qualifier  plate
Speed limit for 
vehicles whose  gross vehicle 
weight or gross 
train weight is less  than 3.5 tonnes
 
 
56 mph (90 km/h) 
(for example)
Speed limit in snow Example:
 
 
If the exterior 
temperature is below  3
  °C:
19 mph (30
  km/h) 
(for example)
with a "snowflake"  symbol
Speed limit at  certain times Example:
 
 
19 mph (30 km/h) 
(for example)
with a "clock" symbol
The units for the speed limit (mph or  km/h) depend on the country you are 
driving in.
This should be taken into account so that you 
observe the speed limit.
For the system to operate correctly when 
you change country, the units for speed in 
the instrument panel must be those for the 
country you are driving in.
The automatic reading of road signs is a  driving aid system and does not always 
display speed limits correctly.
The speed limit signs present on the road 
always take priority over the display by the 
system.
The system is designed to detect signs that 
conform to the Vienna Convention on road 
signs.
Specific speed limits, such as those for 
heavy goods vehicles, are not displayed.
The display of the speed limit in the 
instrument panel is updated as you pass 
a speed limit sign intended for cars (light 
vehicles).
Activation / Deactivation
By default, the system is automatically activated 
at every engine start.
It is set via the  Driving   / Vehicle touch 
screen menu.
Information displayed on 
the instrument panel
 
 
1. Detected speed limit indication
or
2. End of speed limit indication
 
 
The system is active but is not detecting speed 
limit information.
 
 
On detecting speed limit information, the system 
displays the value.
    
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Driving
6Deactivation / Activation 
 
 
 
► Press this button to deactivate / reactivate the 
system at any time. 
Deactivation is signalled by the lighting of 
the indicator lamp in the button and this 
warning lamp in the instrument panel.
The system is automatically reactivated  every 
time the ignition is switched on.
Malfunction
In the event of a system 
malfunction, these warning lamps 
come on on the instrument panel, accompanied 
by an onscreen message and an audible signal.
Have the system checked by a PEUGEOT 
dealer or a qualified workshop.
Active Blind Spot  Monitoring System
Refer to the General recommendations on the 
use of driving and manoeuvring aids .
 
 
This system includes sensors, placed on the 
sides of the bumpers, and warns the driver of 
the potentially dangerous presence of another 
vehicle (car, truck, motorcycle) in the blind spot 
areas of their vehicle (areas hidden
  from   the 
driver's field of vision).
 
 
The warning is given by a fixed warning lamp 
that appears in the door mirror on the side in 
question:
–
 
immediately
 , when being overtaken;
–
 
after a delay of about one second, when 
overtaking a vehicle slowly
.
In addition to this alert, a correction of trajectory 
will be felt if you attempt to cross a line with the 
direction indicator activated, to help you avoid a 
collision.
Activation / Deactivation
It is set via the  Driving   / Vehicle touch 
screen menu.
When starting the vehicle, the warning lamp 
comes on in each mirror to indicate that the 
system is activated.
The state of the system stays in the memory 
when switching off the ignition.
The system is automatically deactivated  when towing with a towing device 
approved by PEUGEOT.
Conditions for operation
– All vehicles are moving in the same direction 
and in adjacent lanes.
–
 
The speed of the vehicle must be between 7 
and 87 mph (12
  and 140   km/h) for the alert and 
between 40 and 87 mph (65 and 140 km/h) for a 
correction of trajectory.
–
 
The system must be activated to trigger a 
change of trajectory
.
–
 
When you overtake a vehicle with a speed 
difference of less than 6
  mph (10   km/h).
–
 
When another vehicle overtakes you with a 
speed difference of less than 16
  mph (25   km/h).
–
 
T
 raffic is flowing normally.
–
 
Overtaking a vehicle over a certain period of 
time and the vehicle being overtaken remains in 
the blind spot.
–
 
Y
 ou are driving on a straight or slightly curved 
road.   
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Driving
– Your vehicle is not pulling a trailer, a caravan, 
etc.
Operating limits 
 
 
 
No alert will be given and no correction will be 
made in the following situations:
–  
In the presence of non-moving objects (parked 
vehicles, barriers, street lamps, road signs, etc.).
–
 
Oncoming traffic.
–
 
Driving on a winding road or a sharp corner
 .
–
 
When overtaking or being overtaken by a 
very long vehicle (lorry
, bus, etc.) which is both 
detected in the rear blind spot and present in the 
driver’s front field of vision.
–
 
When overtaking quickly
 .
–
 
In very heavy traffic: vehicles detected in 
front and behind are confused with a lorry or a 
stationary object.
–
 
If the Park 
 Assist or Full Park Assist function 
is activated.
Malfunction
If the event of a malfunction, this warning 
lamp comes on in the instrument panel, 
accompanied by the display of a message.
Contact a PEUGEOT dealer or a qualified 
workshop to have the system checked.
The system may suffer temporary  interference in certain weather conditions 
(rain, hail, etc.).
In particular, driving on a wet surface or 
moving from a dry area to a wet area can 
cause false alerts (for example, the presence 
of a fog of water droplets in the blind spot 
angle is interpreted as a vehicle).
In bad or wintry weather, ensure that the 
sensors are not covered by mud, ice or snow.
Take care not to cover the warning zone in 
the door mirrors or the detection zones on the 
front and rear bumpers with adhesive labels 
or other objects; they may hamper correct 
operation of the system.
Parking sensors
Refer to the General recommendations on the 
use of driving and manoeuvring aids .
 
 
Using sensors located in the bumper, this 
system signals the proximity of obstacles 
(e.g. pedestrian, vehicle, tree, barrier) present in 
their field of detection.
Rear parking sensors
The system is switched on by engaging reverse 
gear, which is confirmed by an audible signal.
The system is switched off when disengaging 
reverse gear.
Audible assistance 
 
The system signals the presence of obstacles 
which are both within the sensors’ detection zone 
and in the vehicle path defined by the direction of 
the steering wheel.
    
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Driving
6
 
Using sensors located in the bumper, this 
system signals the proximity of obstacles 
(e.g.  pedestrian, vehicle, tree, barrier) present in 
their field of detection.
Rear parking sensors
The system is switched on by engaging reverse 
gear, which is confirmed by an audible signal.
The system is switched off when disengaging 
reverse gear.
Audible assistance 
 
The system signals the presence of obstacles 
which are both within the sensors’ detection zone 
and in the vehicle path defined by the direction of 
the steering wheel.
 
 
Depending on version, in the example shown, 
only the obstacles present in the shaded area 
will be signalled by the audible assistance.
The proximity information is given by an 
intermittent audible signal, the frequency of 
which increases as the vehicle approaches the 
obstacle.
When the distance between the vehicle and 
the obstacle becomes less than about thirty 
centimetres, the audible signal becomes 
continuous.
The sound emitted by the speaker (right or 
left) indicates the side on which the obstacle is 
located.
Adjusting the audible signalWith PEUGEOT Connect Radio or 
PEUGEOT Connect Nav, pressing 
this button opens the window for adjusting the 
volume of the audible signal.
Visual assistance 
 
This supplements the audible signal, without 
taking account of the vehicle's trajectory, by 
displaying bars on the screen that represent the 
distance between the obstacle and the vehicle 
(white: more distant, orange: close, red: very 
close).
When the obstacle is very close, the "Danger" 
symbol is displayed on the screen.
Front parking sensors
Supplementing the rear parking sensors, the 
front parking sensors are triggered when an 
obstacle is detected in front and the speed of the 
vehicle is still below 6 mph (10
  km/h).
Front parking sensor operation is suspended if 
the vehicle stops for more than three seconds in 
forward gear, if an obstacle is no longer detected 
or the vehicle speed exceeds 6
  mph (10   km/h).
The sound emitted by the speaker (front or rear) locates the obstacle relative to 
the vehicle, whether in front of or behind it on 
its path.