light Seat Leon 5D 2011 Service Manual

116Lights and visibility
● If you are towing a trailer equipped with a rear fog light on a vehicle with
a factory-fitted towing bracket, the rear fog light on the vehicle will automat-
ically be switched off.
● The use of the lighting described here is subject to the relevant statutory
requirements.
● Depending on weather conditions (very cold or wet), the front and tail
lights and the turn signals may be temporarily misted. This has no influence
on the useful life of the lighting system. The lights will soon demist when
they are switched on. 
Automatic lighting*
Fig. 72 Automatic light-
ing
Activation
– Rotate the switch to the position “Auto”, this indication will
light up.
Deactivation
– Turn the light switch to 0. Automatic lighting
If automatic headlight control is switched on, dipped beam headlights are
automatically switched on by a photosensor if you drive into a tunnel, for
example.
The rain sensor switches on the dipped beam headlights when the wind-
screen wipers have been operating continuously for a few seconds and it
switches the lights off when the continuous or intermittent wipe is switched
off for some minutes
⇒ page 127.
When the automatic dipped light control is connected but the dipped lights
are off, the warning lamp  lights up on the light control ⇒ fig. 72. If the
automatic control switches on the dipped lights, the instrument and control
lighting is also switched on.
WARNING
● Even if the automatic headlight control is switched on, the dipped
headlights will not be switched on with fog. Therefore, the dipped beam
must be switched on manually.
Note
● For those vehicles with the automatic headlight system, when the key is
removed from the ignition, the acoustic signal will only sound if the light
control is in the position  or  if the vehicle is not fitted with the coming
home function.
● If the daylight driving automatic light function is switched on, the fog
lights or rear fog light cannot be switched on in addition.
● The use of the lighting described here is subject to the relevant statutory
requirements.
● Do not put stickers on the windscreen in front of the sensor. This may
cause disruptions or faults in the automatic lighting system.
● To avoid damage to the tail lights, the lights mounted on the tailgate go
off when the tailgate is opened (depending on the country). 

117
Lights and visibility
Daytime lights*
The daytime light reduces the risk of accidents by increasing
the visibility of the vehicle. The daytime running lights are
enabled automatically when the ignition is switched on. It is
automatically switched off when the side lights are turned
on.
Daytime lights (halogen lamps) 1)
The daytime lights increase road safety in vehicles fitted with halogen
lamps. These include the dipped, side and number plate lights.
The daytime lights are switched on each time the ignition is turned on if the
light setting is in position 0 or . Depending upon the model, a control
lamp  on the light control switch or the lighting up of the instrument pan-
el will indicate that the daytime lighting is on.
It is not possible to switch the daytime lights on or off. Please contact a spe-
cialised workshop if you wish to deactivate the lights.
Daytime lights (bi-xenon lamps)
The daytime lights increase road safety in vehicles fitted with bi-xenon
lamps. The lights are built-in separately to the headlights and are switched
on each time the ignition is turned on if the light setting is in position 0 or
.
Automatic control of the dipped beam in combination with the daytime
lights (bi-xenon headlights)
If the dipped light control and the daytime lighting are activated at the
same time, the dipped lights and the instrument panel lighting will auto-
matically come on as required (e.g. on entering a tunnel) and the daytime
lights will go off. When the automatic dipped light control switches off the dipped lights (e.g. on coming out of the tunnel), the daytime lights come
back on.
Activating the daytime lights
With the ignition switched off, move the turn signal and main beam lever
upwards and back (right turn signal and headlight flash).
Switch on the ignition for 3 seconds while holding this position. The day-
time lights are activated and can be switched on.
Deactivating the daytime lights
With the ignition switched off, move the turn signal and main beam lever
upwards and back (left turn signal and headlight flash) and hold in this po-
sition.
Switch on the ignition for 3 seconds while holding this position. The day-
time lights are deactivated and cannot be switched on.
Activating daytime lights (bi-xenon lamps)
Remove the key from the ignition, move the turn signal lever upwards (right
turn signal) and press it backwards to flash position and hold it in this posi-
tion.
Insert the key and switch the ignition on, holding it in this position for 3
seconds. Then, switch off the ignition. The daytime lights are activated and
can be switched on.
Deactivating daytime lights (bi-xenon lamps)
Remove the key from the ignition, move the turn signal lever upwards (left
turn signal) and press it backwards to flash position and hold it in this posi-
tion.
Insert the key and switch the ignition on, holding it in this position for 3
seconds. Then, switch off the ignition. The daytime lights are deactivated
and cannot be switched on.

1)
It is only available in some countries or as an optional extra
Safety FirstOperating InstructionsPractical TipsTechnical Specifications

118Lights and visibility
Note
Please observe any relevant legal requirements which may apply in your
country. 
Coming/leaving home function*
The Coming Home function is controlled manually. The Leav-
ing Home function is controlled with a photosensor.
If the Coming Home or Leaving Home function is connected, the front side
and dipped lights, the tail lights and the number plate light will light up to
provide assistance.
Coming home function
The Coming Home function is activated by switching off the ignition and
briefly flashing the lights. When the driver door is opened, the Coming
Home lighting comes on. If the driver door is already open when the lights
are flashed briefly, the Coming Home lighting comes on immediately.
When the last door of the vehicle or the tailgate is closed, the Coming Home
function starts and the switching off the headlights is delayed.
The Coming Home lighting switches off in the following cases:
● On completion of the time period established for the delay in switching
off the lights after all the vehicle doors and the tailgate have been closed.
● If, 30 seconds after being connected, any doors or the tailgate remain
open.
● If the light switch is turned to position .
● If the ignition is switched on.
Leaving home function
The Leaving Home function is activated when the vehicle is unlocked if: ●
the light control is in position  and
● the photosensor detects “darkness”.
The Leaving Home lighting switches off in the following cases:
● If the time period for the delay in switching off the headlights has ended
● If the vehicle is locked again.
● If the light switch is turned to position .
● If the ignition is switched on.
Note
The setting for the delay in switching off the headlights in the Coming Home
and Leaving Home function can be changed or the function can be connec-
ted or disconnected in the menu Lights and visibility ⇒ page 76.
● If the ignition key is removed while the lights are on, and the lights are
flashed briefly and the driver door opened, no acoustic signal is heard, as
when the Coming Home function is on, the lights are automatically switched
off after a period of time (except when the light switch is in position  or
. 

119
Lights and visibility
Instrument and switch lighting / Headlight range control
Fig. 73 Dash panel: reg-
ulation for instrument
and switch illumination
and headlight range con-
trol
Instrument and switch lighting 1
When the headlights are switched on, the brightness of the instruments
and switch lighting can be regulated to suit your requirements by turning
the thumb wheel
⇒ fig. 73 1
.
The instrument lighting (dials and needles), the centre console illumination
and the illumination of the displays are regulated by a photodiode incorpo-
rated in the instrument panel.
The instrument lighting (dials and needles) is switched on when the igni-
tion is on and the vehicle lights are off . The instrument lighting is dimmed
automatically as the daylight starts to fade. It goes out completely when the
ambient light level is very low. This function is intended to remind the driver
to switch on the dipped beam headlights in good time when light condi-
tions become poor.
Headlight range control 2
By using the electrical headlight range control, 2 you can adjust the head-
light range to the load level that is being carried in the vehicle. This way, it is possible to avoid dazzling oncoming traffic more than necessary. At the
same time, by using the correct headlight settings, the driver has the best
possible lighting for the road ahead.
The headlights can only be adjusted when the dipped beam is switched on.
To lower the beam, turn the thumb wheel down
2
from the basic setting
0.
Dynamic headlight range control
Vehicles with gas discharge bulbs (“xenon bulbs”) are equipped with dy-
namic headlight range control . This means that the headlights will be ad-
justed to suit the load level of the vehicle and “nodding movements” when
pulling off and braking are automatically compensated for.
Vehicles with gas discharge bulbs do not have headlight range control. 
Adaptive headlights* (for driving round bends)
When driving around bends, the headlights will light the
most important areas of the road.
Fig. 74 Cornering light-
ing using adaptive head-
lights 
Safety FirstOperating InstructionsPractical TipsTechnical Specifications

120Lights and visibility
Dynamic cornering lights (AFS)
The dynamic cornering lights only operate if the vehicle is travelling at more
than 10 km/h and the dipped headlights are on. When taking a bend, the
road is illuminated better with directional gas discharge bulbs than with
conventional fixed headlights.
A fault in the system is indicated via the flashing of the control lamp  on
the instrument panel. At the same time, a text message with information or
instructions to perform necessary operations may appear on the instrument
panel display. Take the vehicle to a specialised workshop and have the fault
repaired.
If the control bulb  lights up on the instrument panel but all the bulbs are
operating correctly ⇒ page 254, there may still be a fault in the dynamic
curve lighting system (AFS). Take the vehicle to a specialised workshop and
have the fault repaired.
WARNING
If the “automatic dipped beam control” is switched on, the dipped beam
headlights will not be switched on in fog. They should be switched on
manually using the light switch. The driver is personally responsible for
the correct use of lights in all situations. “Automatic headlight control”
is merely a system to support the driver. Where necessary, switch on the
lights manually using the light switch.

Fog lights with cornering function*
When the turn signal is switched on to turn or on very tight bends, the right
or left fog lamp automatically comes on to function as a cornering light. The
cornering light only operates if the dipped lights are on.
WARNING
If the “automatic dipped beam control” is switched on, the dipped beam
headlights will not be switched on in fog. They should be switched on
manually using the light switch. The driver is personally responsible for
the correct use of lights in all situations. “Automatic headlight control”
is merely a system to support the driver. Where necessary, switch on the
lights manually using the light switch.

Hazard warning lights 
The hazard warning lights are used to draw the attention of
other road users to your vehicle in emergencies.
Fig. 75 Dash panel:
switch for hazard warn-
ing lights
If your vehicle breaks down:
1. Park your vehicle at a safe distance from moving traffic.
2. Press the button to switch on the hazard warning lights ⇒ 
.

121
Lights and visibility
3. Switch the engine off.
4. Apply the handbrake.
5. On a manual gearbox engage 1st gear. On an automatic, move the selector lever to P.
6. Use the warning triangle to draw the attention of other road users to your vehicle.
7. Always take the vehicle key with you when you leave the vehi- cle.
Switch on the hazard warning lights to warn other road users, for example
when:
● reaching the tail end of a traffic jam,
● there is an emergency
● your vehicle breaks down due to a technical fault,
● you are towing another vehicle or your vehicle is being towed.
All turn signals flash simultaneously when the hazard warning lights are
switched on. That is that the two turn signal turn signal lamps   and the
turn signal lamp in the switch  will flash at the same time. The hazard
warning lights also work when the ignition is switched off.
Emergency braking warning
If the vehicle is braked suddenly and continuously at a speed of more than
80 km/h, the brake light flashes several times per second to warn vehicles
driving behind. If you continue braking, the hazard warning lights will come
on automatically when the vehicle comes to a standstill. They switch off au-
tomatically when the vehicle starts to move again.
WARNING
● The risk of an accident increases if your vehicle breaks down. Always
use the hazard warning lights and a warning triangle to draw the atten-
tion of other road users to your stationary vehicle.
● Never park where the catalytic converter could come into contact with
inflammable materials under the vehicle, for example dry grass or spilt
petrol. This could start a fire!
Note
● The battery will run down if the hazard warning lights are left on for a
long time, even if the ignition is switched off.
● The use of the hazard warning lights described here is subject to the rel-
evant statutory requirements. 
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122Lights and visibility
Turn signal and main beam headlight lever
The turn signal and main beam lever also operates the park-
ing lights and the headlight flasher.
Fig. 76 Turn signal and
main beam headlight lev-
er
The turn signal and main beam headlight lever has the following
functions:
Switching on the turn signals
– Move the lever all the way up ⇒ fig. 76 1
to indicate right, and
all the way down 2 to indicate left.
Signalling a lane change
– Push the lever up 1
or down 2 to the point where you incur
resistance and then release it. The turn signal will flash several
times. The corresponding warning lamp will also flash. Switching main beam on and off
–
If the dipped lights are on, push the lever forward ⇒ fig. 76 3
to switch on the main beam.
– Push the lever towards the steering wheel ⇒ fig. 76 4
to switch
off the main beam.
Headlight flashers
– Pull the lever towards the steering wheel 4
to operate the
flasher.
Switching on parking lights
– Switch the ignition off and remove the key from the lock.
– Move the lever up or down to turn the right or left-hand parking
lights on, respectively.
WARNING
The main beam can dazzle other drivers. Risk of accident! Never use the
main beam headlights or the headlight flasher if they could dazzle other
drivers.
Note
● The turn signals only work when the ignition is switched on. The corre-
sponding warning lamp  or  flashes in the instrument panel. The warn-
ing lamp  flashes when the turn signals are operated, provided a trailer is
correctly attached and connected to the vehicle. If a turn signal bulb is de-
fective, the warning lamp flashes at double speed. If the trailer turn signal
bulbs are damaged, warning lamp  does not light up. Change the bulb.
● The main beam headlights can only be switched on if the dipped beam
headlights are already on. The warning lamp  then comes on in the instru-
ment panel. 

123
Lights and visibility
● The headlight flasher comes on for as long as you pull the lever – even if
no other lights are switched on. The warning lamp  then comes on in the
instrument panel.
● When the parking lights are switched on, the headlight and the tail light
on the corresponding side of the vehicle light up. The parking lights will on-
ly work if the key is removed from the ignition. If the lights are switched on,
an acoustic signal will be emitted while the driver door is open.
● If the turn signal lever is left on after the key has been taken out of the
ignition lock, an acoustic signal sounds when the driver door is opened.
This is a reminder to switch off the turn signal, unless of course you wish to
leave the parking light on. 
Interior lights
Front interior light
Fig. 77 Interior roof trim:
front interior lights
The switch A
⇒ fig. 77 is used to select the following positions: Courtesy light position

Rocker switch in flat position (not activated). The interior lights are automat-
ically switched on when the vehicle is unlocked or the key removed from the
ignition. And turn off approx. 20 seconds after closing the doors. The interi-
or lights are switched off when the vehicle is locked or when the ignition is
switched on.
Interior light switched on 
Push the switch to the position .
Interior light switched off O
Push the switch to position O ⇒ fig. 77.
Note
If not all the vehicle doors are closed, the interior lights will be switched off
after approx. 10 minutes, providing the key has been removed and the cour-
tesy light position selected. This prevents the battery from discharging. 
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124Lights and visibility
Front reading lights
Fig. 78 Interior roof trim:
front lights
Switching on the reading light 
Press the button B
to switch on the reading light.
Switching the reading lights off 
Press the button B
to switch off the reading light. Rear interior and reading lights*
Fig. 79 Interior roof trim:
rear interior lights and
reading lights.
The switch ⇒ fig. 79 C
is used to select the following positions:
Interior light switched off 0
In switch position ⇒ fig. 79 1
, the interior and reading lights are switched
off.
Switching on the reading light 
Turn the switch to position 2
(left reading light) or to position 4 (right
reading light).
Courtesy light position 
Turn the control to position 3
. The interior lights are automatically switch-
ed on when the vehicle is unlocked or the key removed from the ignition.
The light turns off about 20 seconds after closing the doors. The interior
lights are switched off when the vehicle is locked or when the ignition is
switched on.
Interior lights or both reading lights switched on 
Turn the control to position 5
.


125
Lights and visibility
Note
If not all the vehicle doors are closed, the interior lights will be switched off
after approx. 10 minutes, providing the key has been removed and the cour-
tesy light position selected. This prevents the battery from discharging. 
Visibility Sun visors
Fig. 80 Sun visor on the
driver side
The sun visors for the driver and the front passenger can be pulled out of
their mountings in the centre of the vehicle and turned towards the doors
⇒ fig. 80 1
The vanity mirrors in the sun visors have covers. When you open the cover
2 a light* in the roof turns on.
The light* in the roof lining will go out when the vanity mirror cover is push-
ed back or the sun visor is pushed back up.
Note
The roof lamp* will turn off about 10 minutes following the removal of the
ignition key. This prevents the battery from discharging. 
Windscreen wipers
Front windscreen wipers 
The windscreen wiper lever controls the windscreen wipers
and the automatic wash and wipe.
Fig. 81 Windscreen wip-
er and windscreen wash
lever
The windscreen wiper lever ⇒ fig. 81 has the following positions:
Switching off the wipers
– Move the lever to position 0
. 
Safety FirstOperating InstructionsPractical TipsTechnical Specifications