lock Seat Leon 5D 2012 Manual PDF

254Fuses and bulbs
Changing bulbs in headlight unit
Dipped beam bulb
Fig. 133 Dipped beam
headlights
Fig. 134 Dipped beam
headlights
– Raise the bonnet
– Move the loops ⇒ Fig. 133 1
in the direction of the arrow and
remove the cover.
– Remove connector ⇒ Fig. 134 2
from the bulb. –
Unclip the retainer spring ⇒ Fig. 134 3
pressing inwards to the
right.
– Extract the bulb and fit the replacement so that the rim of the
attachment plate is on the reflector cut-out. 
Daylight bulb
Fig. 135 Daylight bulb
– Raise the bonnet.
– Turn bulb holder ⇒ Fig. 135 A
to the left and pull.
– Remove the bulb by pressing on the bulb holder and turning it
anti-clockwise at the same time.
– Installation involves all of the above steps in reverse sequence. 

255
Fuses and bulbs
Turn signal bulb
Fig. 136 Turn signal bulb
Fig. 137 Turn signal bulb
– Raise the bonnet
– Move the loop ⇒ Fig. 136 1
in the direction of the arrow and
remove the cover.
– Turn the bulb holder ⇒ Fig. 137 2
to the left and pull.
– Remove the bulb by pressing on the bulb holder and turning it
anti-clockwise at the same time.
– Installation involves all of the above steps in reverse sequence. Main beam bulb
Fig. 138 Main beam
bulb
Fig. 139 Main beam
bulb
– Raise the bonnet
– Move the loop ⇒ Fig. 138 1
in the direction of the arrow and
remove the cover.
– Slide connector ⇒ Fig. 139 2
to the left or right and pull.
– Remove the bulb by disconnecting the connector.
– Installation involves all of the above steps in reverse sequence. 
Safety FirstOperating instructionsPractical TipsTechnical specifications

257
Fuses and bulbs
Remove the bulb holder
Fig. 142 Front fog light
– Remove connector ⇒ Fig. 142 A
from the bulb.
– Turn bulb holder ⇒ Fig. 142 B
to the left and pull.
– Remove the bulb by pressing on the bulb holder and turning it
anti-clockwise at the same time.
– Installation involves all of the above steps in reverse sequence.
– Check that the bulb works properly. Changing tail light bulbs (on side panel)
Overview of tail lights
Rear lights on the side panel
Turn signalPY21W NA LLSide light and brake lightP21W LL
Safety FirstOperating instructionsPractical TipsTechnical specifications

258Fuses and bulbs
Removing tail light
Fig. 143 Luggage com-
partment: Location of the
bolt securing the tail
light unit
Fig. 144 Remove rear
light unit from side panel
– Check which of the bulbs is defective.
– Open the rear lid. –
Remove the cover by prying the flat side of a screwdriver into
the recess and remove the cover from the opening ⇒ Fig. 143
1
.
– Carefully loosen the screw located behind the cover with a
screwdriver, turning it anti-clockwise (arrows) ⇒ Fig. 143 2
.
– Tilt the light in the direction of the arrows until it comes out (po-
sitions 3
and 4 ⇒ Fig. 144).
– Remove the bulb holder ⇒ page 259.
CAUTION
Take care when removing the rear light unit to make sure there is no dam-
age to the paintwork or any of its components.
Note
Make sure you have a soft cloth ready to place under the glass on the rear
light unit, to avoid any scratches. 

259
Fuses and bulbs
Remove the bulb holder
When changing a bulb, you must first remove the bulb hold-
er.
Fig. 145 Retaining tabs
on reverse side of tail
light
– Remove the bulb holder ⇒ Fig. 145 unlocking the A
retaining
tabs.
– Raise the bulb holder.
– Change the defective bulb.
– To refit follow the steps in reverse order, taking special care
when fitting the bulb holder. And especially that all retaining
tabs are properly in place.
– Place the light back into place and tighten with a screwdriver.
Note
In the case of LED lights, change only the turn signal bulb. 
Changing tail light bulbs (on rear lid)
Overview of tail lights
Rear lid lights 1)
Left sideSide lights2x W5W LLFog lightsH21 WRight sideSide lights2x W5W LLReverse lightP21W LL
1)
The above table corresponds to a right-hand traffic vehicle. The position of lights may vary
according to the country.
Safety FirstOperating instructionsPractical TipsTechnical specifications

260Fuses and bulbs
Remove the bulb holder
The rear lid must be open to change the bulbs.
Fig. 146 Remove the
cover from the rear lid
Fig. 147 Remove the
bulb holder
– Remove the rear lid cover in the direction indicated ⇒ Fig. 146. –
Unlock the retaining tabs A
of the bulb holder, following the
direction of arrows 1 and 2 ⇒ Fig. 147.
– Remove the bulb holder by turning it in the direction of arrow
3
⇒ Fig. 147. 
Changing bulbs
Fig. 148 Position of the
bulbs in the bulb holder
– Lightly press the defective bulb into the bulb holder ⇒ Fig. 148
1
, then turn it to the left 2 and remove it.
– Fit the new bulb, pressing it into the bulb holder and turn it to
the right as far as it will go.
– Use a cloth to remove any fingerprints from the glass part of the
bulb.
– Check that the new bulb works properly.
– Replace the bulb holder. 

261
Fuses and bulbs
Note
For LED pilots, you can only change the fog or reverse bulb, on the left or
right guide. 
Fitting the bulb holder
– Install the bulb holder making sure that locking clips ⇒ Fig. 147
A are properly clipped on.
– Replace the cover of the rear lid lining ⇒ Fig. 146.
Changing number plate light bulbs 1)
Fig. 149 In the rear
bumper: number plate
light
Fig. 150 Number plate
light: remove the bulb
holder
Follow the steps indicated:
1. Press the number plate light in the direction of the arrow ⇒ Fig. 149.
2. Remove the number plate bulb slightly.
3. In the connector lock, turn ⇒ Fig. 150 towards arrow A
and pull
the connector.
4. Rotate the bulb holder in the direction of arrow B
and extract it
with the bulb.
5. Replace the defective bulb with a new bulb with the same fea- tures.
6. Insert the bulb holder in the number plate light and turn in the opposite direction of arrow B
until it stops. 
1)
Depending on how equipped the vehicle is, the number plate lights may be LEDs. LEDs
have an estimated life that exceeds than that of the car. If a light with LEDs fails, go to an
authorised workshop for replacement.
Safety FirstOperating instructionsPractical TipsTechnical specifications

Index
A
ABSsee Anti-lock brake system . . . . . . . . . . . . 183
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Acoustic parking aid . . . . . . . . . . . . . . . . . . . . 178
Acoustic warnings Headlights . . . . . . . . . . . . . . . . . . . . . . . . . 108
Additional electrical appliances (efficiency pro- gramme) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Adjusting the head restraints . . . . . . . . . . . . . . . . . . . 128
Adjusting the head restraint Front head restraint . . . . . . . . . . . . . . . . . . 127
Airbag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Airbag covers . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Airbag system . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Control lamp . . . . . . . . . . . . . . . . . . . . . . . . . 33
Curtain airbags . . . . . . . . . . . . . . . . . . . . . . . 42
Differences between front passenger frontairbag systems . . . . . . . . . . . . . . . . . . . . . 32
Front airbags . . . . . . . . . . . . . . . . . . . . . . . . 35
Knee airbag . . . . . . . . . . . . . . . . . . . . . . . . . 38
side airbags . . . . . . . . . . . . . . . . . . . . . . . . . 39
Air pressure (tyres) . . . . . . . . . . . . . . . . . . . . . . 223
Alarm system . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Alcantara: cleaning . . . . . . . . . . . . . . . . . . . . . 204
Ambient lighting . . . . . . . . . . . . . . . . . . . . . . . 115
Anti-dazzle rear vision mirror . . . . . . . . . . . . . . 123 Anti-dazzle rear vision mirrors
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Anti-freeze protection Windscreen washer system . . . . . . . . . . . . 220
Anti-lock brake system . . . . . . . . . . . . . . . . . . . 183
Anti-theft alarm . . . . . . . . . . . . . . . . . . . . . . 86, 93 see also Anti-theft alarm system . . . . . . . . . 86
Anti-theft alarm system Interior monitoring . . . . . . . . . . . . . . . . . . . . 95
Tow-away protection . . . . . . . . . . . . . . . . . . 95
Anti-theft security system . . . . . . . . . . . . . . 86, 97
Anti-theft wheel bolts . . . . . . . . . . . . . . . . . . . 237
Antifreeze . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215
Aspects to take into account before starting the vehicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
ASR see Traction control system . . . . . . . . . . . . 183
Assistance systems . . . . . . . . . . . . . . . . . . . . . 164 Cruise control . . . . . . . . . . . . . . . . . . . . . . . 164
Parking aid . . . . . . . . . . . . . . . . . . . . . . . . . 179
Assisted starting . . . . . . . . . . . . . . . . . . . . . . . 241
Assist systems Tyre monitoring indicator . . . . . . . . . . . . . . 177
Audible warning . . . . . . . . . . . . . . . . . . . . . . . . . 20
Auto Lock (central locking) . . . . . . . . . . . . . . . . 86
Automatic car washes see Washing . . . . . . . . . . . . . . . . . . . . . . . . 198
Automatic dipped beam control . . . . . . . . . . . 109 Automatic gearbox . . . . . . . . . . . . . . . . . . . . . . 154
Backup programme . . . . . . . . . . . . . . . . . . 162
Downhill speed control . . . . . . . . . . . . . . . 158
Driving tips . . . . . . . . . . . . . . . . . . . . . . . . . 156
Kick-down feature . . . . . . . . . . . . . . . . . . . . 160
Launch Control Programme . . . . . . . . . . . . 160
Manual release of selector lever . . . . . . . . 163
Safety interlock for ignition key . . . . . . . . . 144
Selector lever lock . . . . . . . . . . . . . . . . . . . 155
Selector lever positions . . . . . . . . . . . . . . . 154
Steering wheel with gearshift paddles . . . 159
tiptronic . . . . . . . . . . . . . . . . . . . . . . . 154, 159
B
Balanced (wheels) . . . . . . . . . . . . . . . . . . . . . . 223
Ball coupling . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 217 Assisted starting . . . . . . . . . . . . . . . . . . . . 241
Charge Level . . . . . . . . . . . . . . . . . . . . . . . . 187
Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . 219
Disconnecting/Connecting . . . . . . . . . . . . 217
Power Management . . . . . . . . . . . . . . . . . . 187
Replacement . . . . . . . . . . . . . . . . . . . . . . . . 219
Winter conditions . . . . . . . . . . . . . . . . . . . . 217
Before starting the vehicle . . . . . . . . . . . . . . . . . 8
Biodiesel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
Bioethanol see Ethanol (fuel) . . . . . . . . . . . . . . . . . . . . 206
277
Index

Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185Brake fluid . . . . . . . . . . . . . . . . . . . . . . . . . 217
Brake servo . . . . . . . . . . . . . . . . . . . . . . . . . 185
New brake pads . . . . . . . . . . . . . . . . . . . . . 185
Braking Brake assist system . . . . . . . . . . . . . . . . . . 183
Moving off on a hill . . . . . . . . . . . . . . . . . . 148
C
Carbon components: Cleaning . . . . . . . . . . . . 200
Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198
Care of vehicle . . . . . . . . . . . . . . . . . . . . . . . . . 198
Care (paint care) . . . . . . . . . . . . . . . . . . . . . . . . 200
Catalytic converter . . . . . . . . . . . . . . . . . . . . . . 190
CD-ROM reader (navigation) . . . . . . . . . . . . . . 130
Central locking Anti-theft alarm . . . . . . . . . . . . . . . . . . . . . . 93
Central locking switch . . . . . . . . . . . . . . . . . 93
Electric windows . . . . . . . . . . . . . . . . . . . . . 101
Programming . . . . . . . . . . . . . . . . . . . . . . . . 92
Remote control key . . . . . . . . . . . . . . . . . . . . 91
Selective unlocking system . . . . . . . . . . . . . 91
Sliding/tilting sunroof . . . . . . . . . . . . . . . . 101
Central locking system . . . . . . . . . . . . . . . . . . . . 86 Manual locking in an emergency . . . . . . . . 97
Rear lid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Cetane number (Diesel fuel) . . . . . . . . . . . . . . 207
Changing Windscreen and rear window wiper blades . .221
Changing a bulb . . . . . . . . . . . . . . . . . . . . . . . . 252 Bulb sizes . . . . . . . . . . . . . . . . . . . . . . . . . . 252 Changing gear
Engaging gears (manual gearbox) . . . . . . 152
Manual gearbox . . . . . . . . . . . . . . . . . . . . . 152
Changing main headlight main beam . . . . . . . . . . . . . . . . . . . . . . . . . 255
turn signal . . . . . . . . . . . . . . . . . . . . . . . . . . 255
Changing main headlight bulbs daylight bulb . . . . . . . . . . . . . . . . . . . . . . . 254
Dipped beam . . . . . . . . . . . . . . . . . . . . . . . 254
Changing the battery of the vehicle key . . . . . . . . . . . . . . . . . . . . . 90
Chassis number . . . . . . . . . . . . . . . . . . . . . . . . 264
Child-proof lock Electric windows . . . . . . . . . . . . . . . . . . . . . 100
Child safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Child seat Categorisation in groups . . . . . . . . . . . . . . . 49
Group 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Group 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Group 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Groups 0 and 0+ . . . . . . . . . . . . . . . . . . . . . . 49
Safety notes . . . . . . . . . . . . . . . . . . . . . . . . . 47
Securing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Child seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 ISOFIX system . . . . . . . . . . . . . . . . . . . . . . . . 54
on the front passenger seat . . . . . . . . . . . . . 31
Top Tether system . . . . . . . . . . . . . . . . . 54, 55
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 198 Alcantara . . . . . . . . . . . . . . . . . . . . . . . . . . . 204
Carbon components . . . . . . . . . . . . . . . . . . 200
Display/Easy Connect control panel . . . . . 202
Exhaust pipe . . . . . . . . . . . . . . . . . . . . . . . . 201 Leather . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
Plastic parts . . . . . . . . . . . . . . . . . . . . 200, 202
Radio display . . . . . . . . . . . . . . . . . . . . . . . 202
Rims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201
Seat belts . . . . . . . . . . . . . . . . . . . . . . . . . . 205
Trim parts . . . . . . . . . . . . . . . . . . . . . . . . . . 202
Trims . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200
Washing the vehicle . . . . . . . . . . . . . . . . . . 198
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . 201
Windscreen and rear window wiper blades . .221
Cleaning/De-icing the windows . . . . . . . . . . . 201
Cleaning the rims . . . . . . . . . . . . . . . . . . . . . . . 201
Cleaning the upholstery Natural leather . . . . . . . . . . . . . . . . . . . . . . 203
Closing Bonnet . . . . . . . . . . . . . . . . . . . . . . . . . . . . 210
Panoramic sliding sunroof . . . . . . . . . . . . . 103
Panoramic sunroof . . . . . . . . . . . . . . . . . . . 103
Windows . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Clutch (warning lamp) . . . . . . . . . . . . . . . . . . . 162
Coming Home . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Compartments . . . . . . . . . . . . . . . . . . . . . . . . . 129
Consumption (fuel) . . . . . . . . . . . . . . . . . . . . . 264
Control lamp Airbag system . . . . . . . . . . . . . . . . . . . . . . . . 33
Cruise control . . . . . . . . . . . . . . . . . . . . . . . 164
Tyre monitor indicator warning lamp . . . . 175
Tyre monitoring systems . . . . . . . . . . . . . . 175
Windscreen wiper fluid level . . . . . . . . . . . 117
Control lamps Lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Control of function Rain sensor . . . . . . . . . . . . . . . . . . . . . . . . . 120
278 Index

Controls and displays (overview) . . . . . . . . . . . 59
Control Units . . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Convenience closingPanoramic sliding sunroof . . . . . . . . . . . . . 104
Convenience opening Panoramic sliding sunroof . . . . . . . . . . . . . 104
Convenience opening/closing . . . . . . . . . . . . 101
Cooling system Checking the coolant . . . . . . . . . . . . . . . . . 216
Coolant temperature gauge . . . . . . . . . . . . . 67
Topping up coolant . . . . . . . . . . . . . . . . . . 216
Cornering lights . . . . . . . . . . . . . . . . . . . . . . . . 109
Correct adjustment of front seat head re- straints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Correct adjustment of rear seat head restraints In-use and non-use positions . . . . . . . . . . . 15
Correct sitting position front passenger . . . . . . . . . . . . . . . . . . . . . . 12
Incorrect sitting position . . . . . . . . . . . . . . . 15
passenger . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Cruise control . . . . . . . . . . . . . . . . . . . . . . . . . . 164 Control lamp . . . . . . . . . . . . . . . . . . . . . . . . 164
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . 166
Warning lamp . . . . . . . . . . . . . . . . . . . . . . . 164
Cruise control system . . . . . . . . . . . . . . . . . . . . 164
Curtain airbags . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Description . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Safety notes . . . . . . . . . . . . . . . . . . . . . . . . . 43 D
Danger of fitting a child seat on the front pas- senger seat . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Data recorder . . . . . . . . . . . . . . . . . . . . . . . . . . 189
Daytime driving light . . . . . . . . . . . . . . . . . . . . 109
DEF (instrument panel) . . . . . . . . . . . . . . . . . . . 67
Depth of tread . . . . . . . . . . . . . . . . . . . . . . . . . . 225
Diagnostic connection . . . . . . . . . . . . . . . . . . . 189
Diesel Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . 211
Particulate filter Diesel . . . . . . . . . . . . . . . . 190
Preheating . . . . . . . . . . . . . . . . . . . . . . . . . 144
Digital clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Dipped beam headlight . . . . . . . . . . . . . . . . . . 108
Direction of rotation (tyres) . . . . . . . . . . . . . . . 239
Disabling the airbag . . . . . . . . . . . . . . . . . . . . . . 44
Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61, 62
Display/Easy Connect control panel: Cleaning . .202
Disposal Airbags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Seat belt tensioners . . . . . . . . . . . . . . . . . . . 29
Door/rear lid warning . . . . . . . . . . . . . . . . . . . . . 73
Downhill speed control . . . . . . . . . . . . . . . . . . 158
Drink holders . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Driver see Correct sitting position . . . . . . . 11, 12, 13
Driver information system CD/radio display . . . . . . . . . . . . . . . . . . . . . 73
Door/rear lid warning . . . . . . . . . . . . . . . . . . 73
Engine oil temperature display . . . . . . . . . . 77 Operation via the windscreen wiper lever . 73
Outside temperature display . . . . . . . . . . . . 73
Driving With a trailer . . . . . . . . . . . . . . . . . . . . 194, 195
Driving abroad Headlights . . . . . . . . . . . . . . . . . . . . . . . . . 112
Driving safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Driving through water . . . . . . . . . . . . . . . . . . . 190
Dynamic headlight range control . . . . . . . . . . 114
E
E10 see Ethanol (fuel) . . . . . . . . . . . . . . . . . . . . 206
Easy Connect . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Economic driving . . . . . . . . . . . . . . . . . . . . . . . 191
Efficiency programme Additional electrical appliances . . . . . . . . . 78
Saving tips . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Electrical accessories see Power socket . . . . . . . . . . . . . . . . . . . . 129
Electric windows . . . . . . . . . . . . . . . . . . . . . . . . 100 Convenience opening/closing . . . . . . . . . 101
Electro-mechanical steering . . . . . . . . . . . . . . 186 Warning lamp . . . . . . . . . . . . . . . . . . . . . . . 186
Electronic differential lock . . . . . . . . . . . . . . . . 183
Electronic Self-locking . . . . . . . . . . . . . . . . . . . 183
Electronic Stability Control (ESC) . . . . . . . . . . 183
Emergencies . . . . . . . . . . . . . . . . . . . . . . . . . . . 232 Automatic gearbox Backup programme . . 162
Replacing the battery . . . . . . . . . . . . . . . . . 219
Emergency braking warning . . . . . . . . . . . . . . 111
279
Index