low beam Alfa Romeo 166 2007 Owner handbook (in English)

165
GENERAL INSTRUCTIONS
– When a light is not working check
that the corresponding fuse is intact be-
fore replacing the bulb.
– For the location of fuses, refer to the
paragraph “In the event of a burnt fuse”
in this chapter.
– Before changing a bulb check the
contacts for oxidation.
– Burnt bulbs must be replaced with
others of the same type and power.
– Always check the height of the head-
light beam after changing a bulb to en-
sure they are safe.
TYPES OF BULBS (fig. 23)
Various types of bulbs are fitted to your
vehicle.
A. All glass bulbs
These are pressure-fitted. Pull to re-
move.
B. Bayonet type bulbs
Press the bulb, turn counter-clockwise to
remove this type of bulb from its holder
C. Tubular bulbs
Free them from their contacts to re-
move.
D. Halogen bulbs
To remove free it from the clip on its
seating.IF ONE OF THE
EXTERNAL LIGHTS
GOES OUT
Alterations or repairs to
the electric system not
carried out correctly and without
taking into account the specifica-
tions of the system may cause
malfunctioning and the risk of fire.
WARNING
3045CAm
3054CAm
fig. 23 IMPORTANTThe headlight inner sur-
face might be slightly misted: this should
not be considered irregular but a natural
phenomenon due to low temperature and
the air humidity level. Misting will disap-
pear as soon as the headlights are turned
on. Drops inside the headlight mean wa-
ter infiltration: contact Alfa Romeo Autho-
rized Services.

166
BULBS TYPE W
LOW BEAM/HIGH BEAM (GAS DISCHARGE HEADLIGHTS) D (D1) 35
HIGH BEAM HEADLAMP SIGNALLER
(GAS DISCHARGE HEADLIGHTS) D (H1) 55
LOW BEAM (HALOGEN BULB HEADLIGHTS) D (H7) 55
HIGH BEAM (HALOGEN BULB HEADLIGHTS) D (H7) 55
FRONT SIDELIGHT B (H6W) 6
FOG LAMPS D (H3) 55
FRONT DIRECTION INDICATORS (COLOURED BULB) B (PY21W) 21
SIDE DIRECTION INDICATORS A (5W Amber) 5
REAR DIRECTION INDICATOR non-replaceable LEDs
STOP/SIDE LIGHT B (21/5W) 21/5
REVERSING LIGHT B (P21W) 21
REAR FOG GUARD B (P21W) 21
ADDITIONAL STOP LIGHT (3rd STOP) A (W2.3W) 2.3
REAR SIDE LIGHT (ON BOOT LID) B (R5W) 5
FRONT ROOF LIGHTS B (10W Halogen) 10
BOOT LIGHT C (10W) 10
GLOVEBOX AND DOOR LIGHTS A (W5W) 5
SUN VISOR LIGHT C (C5W) 5
NUMBER PLATE LIGHT A (W5W) 5
REAR ROOF LIGHTS B (HT5W Halogen) 5
Halogen bulbs must be
handled touching only
the metallic part. If the
transparent bulb is touched with
the fingers its lighting intensity
is reduced and the life of the bulb
may be compromised. If touched
accidentally, rub the bulb with a
cloth moistened with methylated
spirits and allow to dry.
Where possible the
bulbs should be re-
placed by Alfa Romeo
Authorized Services. The correct
operation and positioning of the
external lights are vital to the
safety of the vehicle and its pas-
sengers and the subject of specif-
ic laws.
Halogen bulbs contain
pressurised gas, in the
case of breakage they may burst.
WARNING

167
FRONT LIGHT UNITS - GAS
DISCHARGE HEADLIGHTS
(optional for versions/markets where
applicable)
The front light units with gas discharge
headlights contain low beam/high beam
(gas discharge), high beam headlamp
signaller (halogen), sidelight and direc-
tion indicator bulbs.
The bulbs are arranged inside the light
unit as follows (fig. 24-25):
A.Direction indicator
B.High beam headlamp signaller and
sidelight
C.Gas discharge low beam/high beam.Low beams/high beams
Xenon bulbs are very longlasting and
failure is highly unlikely.
The following paragraph describes how
to replace xenon bulbs correctly.
Any work on the front
light units should be car-
ried out with the light switch at
position 0 (lights off) and with the
ignition key removed from the
switch: danger of electric dis-
charge.
WARNING
If necessary, have the
system checked and if
necessary repaired only by Autho-
rized Alfa Romeo Services.
WARNING
A0D0064m
fig. 24
A0D0065m
fig. 25

171
Front direction indicators
To replace the bulb (Type B – PY21W,
21W, coloured):
– Remove the engine compartment cov-
er after turning the fastening pins.
– Turn counter-clockwise and remove
the bulb holder (A- fig. 35) without
disconnecting the connector.
– Remove the bulb (B- fig. 36) from
the bulb holder, pushing it slightly and
turning it counter-clockwise.– Fit the new bulb into the bulb holder,
pushing it slightly and turning it clock-
wise.
– Fit the bulb holder and lock it by turn-
ing it clockwise.
– Refit the engine compartment cover
and secure it by turning the fastening
pins.FRONT LIGHT UNITS –
HALOGEN BULB HEADLIGHTS
(optional for versions/markets where
applicable)
The front light units with halogen bulb
headlights contain low beam, high beam,
sidelight and direction indicator bulbs.
The bulbs are arranged inside the light
unit as follows (fig. 37-38):
A.Direction indicator
B.High beam headlight and sidelight
C.Low beam headlight.
A0D0070m
fig. 35
A0D0071m
fig. 36
A0D0054m
fig. 37

172
Low beam headlights
To replace the bulb (Type D – H7,
55W):
– Remove the engine compartment cov-
er after turning the fastening pins.
– Remove the rubber cap (A- fig.
39) by pulling the tab (B).
– Disconnect the snap-fitted connector
(C- fig. 40).
–- Release the clip (D).
– Remove the bulb (E- fig. 41).– Fit the bulb in the headlight reflector
making the notch coincide with the corre-
sponding groove.
– Lock the bulb with the clip.
– Fit the connector to the new bulb.
– Fit the rubber cap.– Refit the engine compartment cover
and secure it by turning the fastening
pins.
A0D0036m
fig. 38
A0D0072m
fig. 39
A0D0074m
fig. 41
A0D0073m
fig. 40

189
Circuits operated by relays are the fol-
lowing (fig. 89):
A.Dipped beam headlight
B.Climate control fan
C.Horn
D.Front fog light
F.. Petrol versions (single fan): engine
cooling radiator (high speed)
JTD versions (two-fan): engine cooling
radiator (high speed)
G.Conditioner compressor
H.Petrol versions: engine cooling radia-
tor (low speed)
JTD versions (two-fan): engine cooling
radiator (high speed)L.Fuel pump
M.Electronic injection main relay
N.Starter motor
P.Diesel filter warming (JTD versions)
JTD versions (two-fan): engine cooling
radiator (low speed)
To gain access to relays on the bracket
set behind the left headlight (fig. 91),
remove the cover (A-fig. 90) after
turning the fastening pins (B).Circuits operated by relays are the fol-
lowing (fig. 91):
– Brown base relay: additional heater
(JTD versions)
– Black base relay: engine cooling radi-
ator relay, high speed (JTD versions).
A0D0096m
fig. 90
A0D0110m
fig. 91

264
Engine starting ..............................134
EOBD (system) ..............................113
First aid kit ..................................199
Fluids and lubricants ......................243
Fog lamps ......................................93
"Follow me home" device ................60
Front roof lamp..............................100
Fuel consumption ..........................240
Fuel flap ........................................94
Fuel oil filter ..................................219
Fuel reserve ....................................73
Fuel tank cap ................................127
Fuses and relays ............................186
Gear shift ......................................95
Getting to know your car........11
Glovebox ........................................98
Handbrake ....................................95
Hazard warning lights ......................93Headlamps ....................................110
Headrests........................................33
High beam headlamps ......................58
Identification data..................232
In an emergency ............................157
In the event of an accident ..............198
Inside rear-view mirror ......................36
Installation of electric/
electronic devices ......................156
Instrument cluster ............................12
Instrument light dimmer ....................94
Interior equipment ............................96
Interior maintenance ......................228
Keys............................................ 16
Level checking ..............................209
Light switch ....................................57
Low beam headlamps ......................58
Luggage compartment ....................110
Maintenance
- Additional operations ................206
- Annual Inspection Programme ....206
- Maintenance programme ..........204
- Scheduled Maintenance ............202
Mileage recorder ..............................70
Number plate lights ......................179
Oddments compartments........103-104
Oddment compartment light ............183
Parking ......................................138
Parking lights ..................................58
Parking sensors................................67
Performance ..................................239
Pollen/dust filter ......................90-219
Position lights ..................................58
Power steering ..............................142
Power windows ..............................38