Page 3 of 352

WELCOME
Key
Warning:
this symbol marks warnings which it is essential to observe for your own safety, for the safety of others or to avoid any risk of damaging your vehicle.
Information:
this symbol draws your attention to additional information for better use of your vehicle.
Protection of
the environment:
this symbol accompanies advice relating to protection of the environment.
Page reference:
this symbol invites you to refer to the pages which provide details of the function.
Thank you for choosing a 508. This handbook has been designed to enable you to make the most of your vehicle in all situations. Therefore, on the first few pages, you will find a detailed summary followed by a quick reference
guide intended to make it easier for you to become familiar with your vehicle. All of the details specific to your vehicle, comfort, safety, practical information, are then presented in this handbook, to increase your appreciation of the vehicle and to help you make the most of it.
Each model may only be fitted with some of the equipment shown in this handbook, depending on the trim level, model, version and specification for the country in which it is sold.
Page 4 of 352

.
Contents
Instrument panel 22
Indicator and warning lamps 23
Gauges and indicators 33
Trip computer 38
Setting the date and time 41
Monitoring
Familiarisation
Remote control key
43
Alarm 53
Electric windows 55
Boot 57
Motorised tailgate (SW) 58
Sunroof 61
Panoramic sunroof (SW) 63
Fuel tank 64
Diesel misfuel prevention 65
Access
Front seats 67
Rear seats 72
M i r r o r s 74
Steering wheel adjustment 76
Interior fi ttings 77
Boot fi ttings (Saloon) 80
Boot fi ttings (SW) 81
Heating and Ventilation 86
Manual air conditioning 88
Dual-zone digital air conditioning 90
Quad-zone digital air conditioning 93
Rear screen demist - defrost 98
Programmable Heating / Ventilation 99
Comfort
Starting-switching off the engine 101
Electric parking brake 103
Manual parking brake 110
Manual gearbox 111
Gear shift indicator 112
Automatic gearbox 113
6-speed electronic gear control gearbox 117
Stop & Start 121
Hill start assist 124
Head-up display 125
Speed limiter 128
Cruise control 130
Parking sensors 132
Parking space sensors 134
Driving
Lighting controls 136
Automatic illumination of headlamps 141
Headlamp adjustment 144
Directional lighting 145
Wiper controls 147
Automatic rain sensitive wipers 149
Courtesy lamps 151
Interior mood lighting 152
Visibility
Eco-driving 20
Page 6 of 352
4
Familiarisation
Electronic key: Keyless Entry and Starting
This system allows you to unlock, lock and start your vehicle while keeping the key on your person and in the defined zone around the vehicle. defined zone around the vehicle.
4 4, 101
Parking space sensor
This system measures the size of a space and advises whether parking is possible.
13 4
Exterior
Stop & Start Stop & Start
This system puts the engine temporarily into standby during stops in the traffic (red lights, traffic jams, etc...). The engine restarts automatically as soon as you want to move off. The Stop & Start system reduces fuel consumption and exhaust emissions, and offers the comfort of complete silence when stationary.
121
Page 8 of 352
6
Familiarisation
Open
A. Unfolding / Folding the key. B. Unlocking the vehicle.
Remote control key
1. Opening the fuel filler flap.
Fuel tank
64
Unlocking
With the electronic key on your person and in the defined zone around the vehicle, pass your hand behind the door handle to unlock the vehicle, then pull on the handle to open the door.
Locking
With the electronic key in the defined zone around the vehicle, press with a finger on the door handle (at the markings) to lock the vehicle.
Keyless Entry and Starting
system
2. Opening and hooking the fuel filler cap. Tank capacity: approximately 72 litres (or 55 litres according to version).
Other functions...C. Normal locking of the vehicle Vehicle location.
44
43
Page 10 of 352
8
Familiarisation
Lighting of the indicator lamp indicates the state of the corresponding function.
Switch panels
Opening the boot.
Opening the fuel filler flap.
5 7, 5 8
Massage.
71
53
Alarm.
Programmable heating warning lamp.
64
99
Electric parking brake.
103
Starting/stopping using the electronic key.
101
Deactivation of Stop & Start.
122
Head-up display (on/off, settings).
125
Deactivation of parking sensors.
133
Parking space sensor.
13 4
Electric child lock.
164
Deactivation of the DSC/ASR system.
171
Adaptive lighting.
142
Page 12 of 352
10Familiarisation
9. Fusebox. 10. Front door window demisting/defrosting vent. 11. Windscreen demisting/defrosting vent. 12 . Steering lock and starting with the key. 13. Starting using the electronic key. 14 . Audio equipment steering wheel controls. 15. Wiper / screenwash / trip computer stalk. 16. Central locking and hazard warning buttons. 17. Multifunction screen.
Instruments and controls
1. Cruise control / speed limiter controls. 2. Headlamp height adjustment. 3. Lighting and direction indicator stalk 4. Instrument panel. 5. Driver's airbag. Horn. 6. Gear lever. 7. 12 V accessory socket USB port / auxiliary socket. 8. Bonnet release lever.
18. Central adjustable air vents. 19. Passenger's airbag. 20. Side adjustable air vents. 21. Glove box / Passenger's airbag deactivation. 22. Electric parking brake. 23. Central armrest with storage. 24. Storage (according to version). 25. Audio system. 26. Heating / air conditioning controls.
Page 19 of 352
.
17
Familiarisation
Passenger safety
1. Open the glove box. 2. Insert the key. 3. Select position: "ON" (activation), with front passenger or "for wards facing" child seat, "OFF" (deactivation), with "rear facing" child seat. 4. Remove the key keeping the switch in the new position.
Front passenger's airbag
176
A. Front seat belts not fastened or unfastened warning lamp.
Front seat belts and
passenger's front airbag
176
B. Airbag fault warning lamp. C. Front passenger's airbag activation indicator lamp.
173
Page 20 of 352

18
Familiarisation
Driving safely
Stop & Start
Going into engine STOP mode
121
The "ECO" warning lamp comes on in the instrument panel and the engine goes into standby;
with an electronic gear control gearbox and speeds below 4 mph (6 km/h), press the brake pedal or put the gear lever in position N .
Going into engine START mode
Deactivation / Reactivation
You can deactivate the system at any time by pressing the "ECO OFF" button; the button's warning lamp comes on.
122
122
The system is automatically reactivated every time the engine is started with the key.
Before refuelling or doing anything under the bonnet, you must switch off the ignition with the key.
The "ECO" warning lamp goes off and the engine restarts with an electronic gear control gearbox :
- with the gear lever in position A or Mrelease the brake pedal, - or with the gear lever in position N and brake pedal released, move the gear lever to position A or M , - or engage reverse.
In certain circumstances, the STOP mode may not be available; the "ECO" warning lamp flashes for a few seconds, then goes off.
In certain circumstances, START mode may be invoked automatically; the "ECO" warning lamp flashes for a few seconds, then goes off.