2004 Alfa Romeo 156 air filter

CAR MAINTENANCE
265
DIESEL FILTERDRAINING CONDENSATION
WATER
Water in the supply circuit
can seriously damage the
whole injection system and
cause malfunctions to engine oper-
ation. Should the warning lamp
c
turn on, available for the provid-
ed versions/markets, contact as
soon as possible the Alfa Romeo
Authorised Service for drainage op-
erations.
When the car is habitual-
ly driven in dusty areas,
the cleaner should be
changed at shorter intervals than
those given in the Programmed
Maintenance Schedule.Any attempt to clean the
air cleaner may cause se-
rious engine damage.
AIR FILTERThe air cleaner is connected to the tem-
perature and air flow sensors which send the
electrical signals needed for correct opera-
tion of the injection and ignition system to
the control unit.
It must therefore always be in perfect con-
ditions to ensure correct operation of the en-
gine, low consumption and exhaust emis-
sion levels.
If they are not carried out
correctly and with the due
precautions, the operations
involving cleaner replacement de-
scribed herein may compromise the
safety of the car.
This operation should be carried
out by Alfa Romeo Authorized Ser-
vices.

CAR MAINTENANCE
266
BATTERYThe battery is of the “Limited Mainte-
nance” type and is fitted with an optical in-
dicator (A-fig. 23) for checking the elec-
trolyte level and charge.
Under normal conditions of use the elec-
trolyte does not need topping up with dis-
tilled water. To make sure that it is in effi-
cient conditions, at routine intervals check
the indicator on the battery cover which
should be dark in colour with a green cen-
tral area.
If the indicator is a bright light colour, or
dark without the green central area, contact
Alfa Romeo Authorized Services.Batteries contain sub-
stances that are very
harmful for the environ-
ment. You are advised to have the
battery changed at Alfa Romeo
Authorized Services, which are
properly equipped for disposing of
used batteries respecting nature
and the law.
POLLEN FILTER This has mechanical/electrostatic air fil-
tering actions, provided that the windows
and doors are shut.
Have the pollen filter checked once a year
by Alfa Romeo Authorized Services, prefer-
ably at the onset of summer.
If the car is mainly used in dusty or heav-
ily polluted areas, the filter should be
changed at more frequent intervals than
specified in the Scheduled Maintenance Pro-
gramme.
WARNINGThe failure to replace the fil-
ter can considerably reduce the effectiveness
of the climate control system.
fig. 23
A0B0147m
The liquid in the battery is
poisonous and corrosive.
Avoid contact with eyes and skin.
Do not bring naked flames or pos-
sible sources of sparks near to the
battery: risk of fire and explosion.
WARNING

ALPHABETICAL INDEX
328
Diesel filter ................................. 265
Dimensions ........................... 315-316
Dipped beam headlights
– aiming for left-hand/
right-hand driving ................... 178
– changing bulbs ..................... 224
– switching on ......................... 48
Direction indicators
– changing front bulbs ............... 223
– changing rear bulbs ................ 228
– changing side bulbs ................ 227
– switching on ......................... 49
Door mirrors.......................... 25-26
Doors
– centralized locking ................. 19
– child safety lock............... 20-279
– opening/closing
from inside ..................... 19-278
– opening/closing
from outside ................... 18-278
– remote control ....................... 7
– remote locking/unlocking ...... 16
Economy and environment-friendly
driving ..................................... 197
Electronic alarm system................. 11
– automatic engagement ........... 14
– cutting out the siren .............. 15
– description ............................ 11
– interrupting the alarm ............. 14
– ministerial homologation ........ 16
– request for additional
emote controls....................... 12
– switching off ........................ 13
– switching on ......................... 12
– volumetric protection ............. 15
– when the alarm is triggered ..... 14
Electronic control units ................. 270
Emergency starting ................ 191-205
– starting by inertia .................. 207
– starting with an auxiliary
battery ................................. 242
Engine
– identification codes................. 301
– marking ............................... 299
– specifications ......................... 302
Engine compartment
– bonnet ................................. 172
– cleaning................................ 276Engine coolant
– checking level and topping up .. 261
– temperature gauge
and warning light ................... 62
Engine lock system
(Alfa Romeo CODE) ................... 6
Engine oil
– checking level and topping up .. 257
– consumption ......................... 258
Environment
– economy and environment-
friendly driving....................... 197
– emission reducing devices . 187-188
– protecting emission
reducing devices .................... 198
– reducing running costs
and environment pollution ....... 195
– use of non-toxic materials........ 187
EOBD system............................... 182
First-aid kit ................................ 247
Fix&Go (quick tyre repair kit) ........ 212
Flashing main beam headlights ..... 49
Fluids and lubricants .................... 320
Front foglights
– adjustment............................ 177
– changing bulbs ..................... 225
– switching on.......................... 136