Page 3 of 340

i !
  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 340

.
Contents
Instrument panel  20
Indicator and warning lamps  21
Gauges and indicators  31
Tr i p  c o m p u t e r   3 6
Instruments and controlsFamiliarisation
Remote control key  39
Alarm 48
Electric windows  50
Boot 52
Motorised tailgate (SW)  53
Panoramic sunroof (SW)  56
Fuel tank  58
Diesel misfuel prevention  59
Access
Front seats  61
Rear seats  66
Mirrors 68
Steering wheel adjustment  70
Interior fi ttings  71
Boot fi ttings (Saloon)  74
Boot fi ttings (SW)  75
Heating and Ventilation  80
Manual air conditioning  82
Dual-zone digital air conditioning  84
Quad-zone digital air conditioning  87
Rear screen demist - defrost  92
Programmable Heating/ Ventilation  93
Comfort
Star ting-switching off the engine  94
Electric parking brake  96
Manual parking brake  103
Manual gearbox  104
Gear shift indicator  105
Automatic gearbox  106
6 -speed electronic gear control gearbox  110
Stop & Start  114
Hill start assist  117
Head-up display  118
Speed limiter  121
Cruise control  123
Parking sensors  125
Parking space sensors  127
Driving
Lighting controls  129
Automatic illumination of headlamps  134
Headlamp adjustment  137
Directional lighting  138
Wiper controls  140
Automatic rain sensitive wipers  142
Cour tesy lamps  144
Interior mood lighting  145
Visibility 
         
        
        
     
        
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9
Familiarisation
  Sitting comfortably 
 
 
Front seats 
 
 
61 
 
 
 
 
Manual adjustments 
 
 
 
1. 
  Head restraint height and angle 
adjustment. 
   
2. 
 Backrest angle adjustment. 
   
3. 
  Seat cushion height adjustment. 
   
4. 
  Lumbar support adjustment. 
   
5. 
  Seat forwards-backwards adjustment.  
 
 
Electrical adjustment 
 
 
 
1. 
  Angle, seat height and seat for wards-
backwards adjustment. 
   
2. 
  Backrest angle adjustment. 
   
3. 
  Lumbar support adjustment.  
   
62 
 
 
     
 
6. 
  Adjusting the cushion.   
         
        
        
     
        
        Page 14 of 340
12
!
Familiarisation
  Sitting comfortably 
 
 
Head restraint adjustment 
 
 
64 
 
    
 
1. 
  Release the adjustment mechanism. 
   
2. 
  Adjust for height and reach. 
   
3. 
  Lock the adjustment mechanism.  
 
 
Steering wheel adjustment 
 
 
70 
 
    For reasons of safety, these operations 
must only be carried out with the 
vehicle stationary. 
   
Heated seats control 
 
 
0 
: off. 
   
1 
: low. 
   
2 
: medium. 
   
3 
: high.    To lower it, press button  A 
. 
  To raise it, guide the head restraint upwards to 
the desired position. 
  To incline it, swivel the lower part backwards or 
forwards. 
   
64 
 
  
         
        
        
     
        
        Page 15 of 340
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13
i
Familiarisation
  Sitting comfortably 
 
 
Door mirrors 
 
 
Adjustment 
 
 
 
1. 
  Selection of the mirror. 
   
2. 
  Adjusting the position of the mirror glass. 
   
3. 
  Deselection of the mirror.  
   
68 
 
 
   
Other functions... 
 
  Folding/Unfolding.  
 
 
Rear view mirror 
 
 
Manual day/night type 
 
 
 
1. 
  Selecting the "day" position of the rear view 
mirror. 
   
2. 
  Rear view mirror adjustment.  
 
 
 
Automatic day/night type 
 
 
70 
 
 
     
 
1. 
  Automatic detection of day/night mode. 
   
2. 
  Rear view mirror adjustment.     
 
1. 
  Fitting the belt. 
   
2. 
 Fastening. 
   
3. 
  Check that the belt is correctly fastened by 
pulling on the belt webbing.  
 
 
Front seat belts 
 
 
163 
 
  
         
        
        
     
        
        Page 23 of 340

1
21
!
Instruments and controls
   
 
 
 
 
 
 
 
 
Indicator and warning 
lamps 
  Visual indicators informing the driver that a 
system is in operation, switched off or has a 
fault. 
   
When the ignition is switched on 
 
Cer tain warning lamps come on for a few 
seconds in the instrument panel and/or 
instrument panel screen when the vehicle's 
ignition is switched on. 
  When the engine is started, these same 
warning lamps should switch off. 
  If they remain on, before moving off, refer to the 
information on the warning lamp concerned.  
 
 
Associated warnings 
 
The switching on of cer tain warning lamps may 
be accompanied by an audible signal and a 
message in the instrument panel screen. 
  The warning lamps may come on continuously 
(fixed) or flash. 
  Cer tain warning lamps may come on in 
one of two modes. Only by relating the 
type of lighting to the operating status 
of the vehicle can it be ascer tained 
whether the situation is normal or 
whether a fault has occurred.  
1
2
2
2
3
3
3
2
3
3
 
 
 
 
 
 
 
 
 
 
 
 
 
Instrument panel screen 
 
 
 
With the vehicle stationar y 
, use the left hand 
thumb wheel to move through the menus, so 
as to configure the vehicle settings (driving and 
comfort systems, ...). 
   
 
-   Rotation (other than menu): scroll through 
the list of active functions available, 
   
-   Press: main menu, confirm the selection, 
   
-   Rotation (in a menu): move up or down in 
the menu.  
 
 
 
 
Main menu 
 
 
Vehicle settings    
Screen settings 
   
Preheating/Preventilation 
 
 
Driving position setting 
 
   
Unlocking boot only 
    
Driving assistance 
 
  Speeds memorised 
  Rear wipe in reverse gear 
  Automatic parking brake 
   
Lighting 
 
  Welcome lighting 
  Guide-me-home headlamps 
  Directional headlamps  
   
Settings 
 
 
 
 
     
Language 
 
   
Units 
 
  Fuel consumption 
  Te m p e r a t u r e  
   
Colours 
 
 
3
1
2
2
3
2
3
1
2 
         
        
        
     
        
        Page 63 of 340
3
61
Comfort
   
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Front seats 
 
 
Manual adjustments 
 
 
 1. 
  Adjustments to the height and angle of 
the head restraint 
   
  To raise it, pull upwards.  
  To lower it, hold the button in and press on 
the head restraint (pushing to go past the 
stiff point of the button). 
   
2. 
  Adjustment of the backrest angle 
   
  Operate the control lever and adjust the 
position of the backrest to the front or to the 
rear. 
   
3. 
  Adjustment of the seat height 
   
  Raise or lower the control lever the number 
of times required to obtain the desired 
position. 
   
4. 
  Adjustment of the lumbar suppor t 
   
  This system allows the height and depth of 
the lumbar suppor t to be adjusted separately. 
   
 
 ) 
 For wards or backwards to increase or 
decrease the lumbar suppor t. 
   
 ) 
 Upwards or downwards to raise or lower 
the lumbar contact zone.  
   
5. 
  Forwards-backwards adjustment of the 
seat position 
   
  Lift the control bar and slide the seat 
for wards or backwards.  
 
 
 
 
6.  Adjusting the cushion 
   
  Pull the handle to adjust the length of the 
cushion.   
         
        
        
     
        
        Page 64 of 340

62
i
Comfort
   
 
 
 
 
 
 
 
Electric adjustments 
 
 
Switch on the ignition or star t the engine if the vehicle has gone into economy mode.    
 
1. 
  Adjustment of the seat cushion angle 
and height, and forwards-backwards 
adjustment 
 
   
 
 ) 
 Raise or lower the front of the control to 
adjust the seat cushion angle. 
   
 ) 
 Raise or lower the rear of the control to 
raise or lower the seat. 
   
 ) 
 Simultaneously raise or lower the front 
and rear of the control in order to raise or 
lower the entire seat.  
   
2. 
  Adjustment of the backrest angle  
 
 
  Move the control for wards or backwards to 
adjust the backrest angle. 
   
3. 
  Adjustment of lumbar support 
 
 
  This function allows you to independently 
adjust the height and level of lumbar 
support.  
  The electric functions of the driver's seat are active for about a minute after opening the 
front door. They are deactivated about a minute after switching off the ignition and in 
economy mode. 
  To reactivate them, switch on the ignition.  
   Move the control: 
   
 
 ) 
  For wards or backwards to increase or 
reduce the lumbar suppor t. 
   
 ) 
  Upwards or downwards to raise or lower 
the lumbar suppor t zone.