2009 Alfa Romeo 147 maintenance

VEHICLE MAINTENANCE
234
CHARGING THE BATTERY
IMPORTANTThe battery charging pro-
cedure is described only for information pur-
poses. This operation should be carried out
by Alfa Romeo Authorised Services.
Charging should be slow at a low amp rat-
ing for 24 hours. Charging for a longer time
may damage the battery.
Charge the battery as follows:
– Disconnect the battery negative termi-
nal (–).
– Connect the charger cables to the bat-
tery terminals ensuring that the bias is cor-
rect.
– Turn on the charger.
CHECKING THE CHARGE
The battery charge may be checked satis-
factorily using the indicator, and acting ac-
cording to the colour the indicator shows.
Refer to the table below or to the label
(fig. 10) on the battery itself.
Brilliantwhite colour
Dark colour without green
area in the centre
Dark colour with green area in the centreTop up the electrolyte
Low charge level
Sufficient electrolyte
level and chargeContact Authorised Alfa Romeo
Services
Charge the battery
(you are advised to contact
Alfa Romeo Authorised Services)
No action
– After charging, turn off the charger be-
fore disconnecting it from the battery.
– Re-connect the battery negative termi-
nal (–).
IMPORTANTIf the battery is kept with
a charge of below 50% it is damaged by sul-
phation, its starting capability is reduced and
it is also more subject to the possibility of
freezing (this may occur already at -10 °C).
In the event of prolonged inactivity, refer
to the paragraph “Vehicle inactivity”, in the
chapter “Correct use of the car”.
Never attempt to charge a
frozen battery: it must
firstly be thawed, otherwise it
may burst. If freezing has occurred,
the battery should be checked be-
fore charging by specialised per-
sonnel, to make sure that the in-
ternal elements are not damaged
and that the body is not cracked,
with the risk of leaking poisonous
and corrosive acid.
WARNING
Working with a low fluid
level may damage the bat-
tery irreversibly, even causing it to
burst.
WARNING

VEHICLE MAINTENANCE
235
You are also reminded that services with
high current absorption switched on by the
user, such as for example: baby bottle warm-
ers, vacuum cleaner, mobile phone, mini
fridge, etc., quicken the battery draining
processif they are turned on with
the engine offor running at idle speed.
IMPORTANT When installing addition-
al systems on the vehicle, bear in mind that
improper branches on connections of the ve-
hicle wiring are dangerous, particularly if
safety devices are involved.
Battery
60 Ah
70 AhMaximum permissible
loadless absorption
36 mA
42 mA
The maximum absorption of all the ac-
cessories (standard and fitted afterwards)
should be 0.6 mA x Ah (of the battery), as
shown in the following table:CHANGING THE BATTERY
When changing the battery it should be re-
placed with another original one with the
same characteristics. If it is replaced by a
battery with different characteristics, the
maintenance intervals given in the Sched-
uled Maintenance Programme in this chap-
ter are no longer valid and for maintenance
it will be necessary to follow the battery
Manufacturer’s instructions.
USEFUL HINTS TO EXTEND
THE LIFE OF YOUR BATTERY
To avoid rapidly draining the battery and
ensure that it continues to work correctly,
the following should be noted:
– The terminals must always be firmly
tightened.
– Within reason, avoid using electrical de-
vices for a long time when the engine is
switched off (radio, hazard warning lights,
parking lights, etc.).– When the vehicle is parked in a garage,
ensure that the doors, bonnet, boot and in-
ner lids are closed properly so that the lights
do not stay on permanently.
– Before carrying out any work on the
electric system, disconnect the negative ca-
ble from the battery.
– If after buying the car, you wish to in-
stall electric accessories which require a per-
manent electric supply (alarm, voice feature,
radionavigator with satellite antitheft func-
tion etc.) or accessories that burden the elec-
tric system, contact Alfa Romeo Authorised
services whose qualified personnel, in ad-
dition to suggesting the most suitable de-
vices belonging to Lineaccessori Alfa Romeo,
will evaluate the overall electric absorption,
checking whether the vehicle’s electric sys-
tem is capable of withstanding the load re-
quired, or whether it should be integrated
with a more powerful battery. In fact, as
some of these devices continue absorbing
energy even when the ignition key is off (car
stationary, engine off), they gradually drain
the battery.

VEHICLE MAINTENANCE
236
– Do not check for current in the cables by
short-circuiting the ends.
– If electric welding is to be carried out on
the body, remember to disconnect the elec-
tronic control units, or remove them if the
work involves high temperatures.ELECTRONIC
CONTROL UNITS
With normal use of the vehicle. no partic-
ular precautions need to be taken.
In the event of work on the electric system
or emergency starting, the instructions giv-
en below must absolutely be adhered to:
– Always switch off the engine before dis-
connecting the battery from the electric sys-
tem.
– If it is necessary to charge the battery,
always disconnect it from the electric sys-
tem.
– When starting in an emergency, only
use an auxiliary battery and not a battery
charger.
– Check that the bias is correct and that
the connections between the battery and
the electric system are in efficient conditions.
– Before disconnecting or connecting the
terminals of electronic units, ensure that the
ignition key is not in the MARposition.
WHEELS AND TYRES
TYRE PRESSURE
Check the tyre pressure of every wheel, in-
cluding the spare.
The pressure should be checked with the
tyre rested and cold.
It is normal for the pressure to increase
when the car is in use. Should it become
necessary to restore the pressure with the
tyre hot, bear in mind that the pressure
should be +0.3 bar compared with the spec-
ified rating.
For the correct tyre inflation pressure, see
wheels in the “Technical Specifications”
chapter.
Alterations or repairs to
the electric system carried
out incorrectly and without taking
account of the specifications of the
system, may cause operating faults
with the risk of fire.
WARNING
Remember that vehicle
road holding also depends
on correct tyre inflation pressure.
WARNING

VEHICLE MAINTENANCE
237
Incorrect pressure causes abnormal tyre
wear (fig. 11):
A- Normal pressure: tread evenly worn.
B- Low pressure: tread particularly worn
at the edges.
C- High pressure: tread particularly worn
in the centre.
Tyres should be changed when the tread
thickness is reduced to 1.6 mm. In any case
follow local regulations.
fig. 11
A0A0225m
IMPORTANT
Where possible, avoid suddent braking,
tyre squealing starts, etc.
Particularly avoid violent bumps against
kerbs, potholes or obstacles of various kinds.
Prolonged driving on rough roads may dam-
age the tyres. Routinely check the tyres for
cuts on the sides, swellings or uneven tread
wear. If necessary contact Alfa Romeo Au-
thorised Services.
Avoid overloading the vehicle when trav-
elling: this may cause serious damage to the
wheels and tyres.
If a tyre is punctured, stop immediately
and change it to avoid damage to the tyre
itself, the rim, suspensions and steering sys-
tem. Tyres age even if they are not used
much. Cracks in the tread rubber are a sign
of aging. In any case, if the tyres have been
on the vehicle for over 6 years, they should
be checked by specialised personnel, to see
if they can still be used.In the case of replacement, always fit new
tyres, avoiding those of dubious origin.
The
Alfa 147 GTAuses Tubeless
tyres. Never use an inner tube with these
tyres.
If a tyre is changed, also change the infla-
tion valve.
To allow even wear between the front and
rear tyres it is advisable to change over every
10-15 thousand kilometres, keeping them
on the same side of the car so as not to re-
verse the direction of rotation (fig. 12).
fig. 12
A0A0459m
Excessively low pressure
causes overheating of the
tyre with the possibility of serious
damage to it.
WARNING

VEHICLE MAINTENANCE
238
WINDSCREEN/
REARSCREEN WIPERS
BLADES
Periodically clean the rubber part using spe-
cial products; TUTELA PROFESSIONAL
SC 35is recommended.
If the rubber blades are bent or worn they
should be replaced. In any case they should
be changed once a year.
A few simple notions can reduce the pos-
sibility of damage to the blades:
– If the temperature falls below zero,
make sure that ice has not frozen the rub-
ber against the glass. If necessary, thaw us-
ing an antifreeze product.
– Remove any snow from the glass: in ad-
dition to protecting the blades, this prevents
effort on the motor and overheating.
– Do not operate the windscreen and
rearscreen wipers on dry glass.
RUBBER HOSES
As far as the brake system and fuel sup-
ply rubber hoses are concerned, carefully fol-
low the Scheduled Maintenance Programme
of this chapter. Indeed, ozone, high tem-
peratures and the prolonged lack of fluid in
the system may cause hardening and crack-
ing of the hoses, with possible leaks. Care-
ful control is therefore necessary.
Do not cross switch the
tyres, moving them from
the right of the car to the left and
vice versa.
WARNING
Alloy rim painting involving
temperatures exceeding
150°C should be avoided since
wheel mechanical characteristics
could be impaired.
WARNING

VEHICLE MAINTENANCE
239
Changing the windscreen wiper
blade(fig. 13)
Instructions for removing the
windscreen wiper blade
Proceed as follows:
– raise the windscreen wiper arm (A);
– turn blade (B) 90° around pin (C), set
at the end of the arm;
– remove the blade from pin (C).Instructions for refitting the
windscreen wiper blade
To refit the blade proceed as follows:
– fit pin (C) into the hole located at the
middle of the blade (B);
– place the arm with the blade on the
windscreen.
Changing the rearscreen blade
(fig. 14)
– Raise the cover (A) and remove the arm
from the car, slackening the nut (B) that
fastens it to the pivot pin.
– Correctly position the new arm and firm-
ly tighten the nut.
– Lower the cover.
fig. 14
A0A0227m
SPRAY JETS (fig. 15-16)
If the jet of fluid is inadequate, firstly check
that there is fluid in the reservoir: see
“Checking levels” in this chapter.
Then check that the nozzle holes are not
clogged, if necessary use a needle.
If necessary, direct the jet of fluid work-
ing on the adjustment screw (A).
fig. 15
A0A0460m
fig. 16
A0A0461m
Driving with worn wiper
blades is a serious hazard,
because visibility is reduced in bad
weather.
WARNING
fig. 13
A0A0728m

VEHICLE MAINTENANCE
240
HEADLIGHT WASHERS
Regularly check that the spray jets are in-
tact and clean (fig. 17).
If it is necessary to direct the jet, contact
an Alfa Romeo Authorised Service.
BODYWORK
PROTECTION FROM
ATMOSPHERIC AGENTS
The main causes of corrosion are:
– atmospheric pollution
– salty air and humidity (coastal areas, or
hot humid climates)
– seasonal environment conditions.
Not to be underestimated is also the abra-
sive action of wind-borne atmospheric dust
and sand and mud and gravel raised by oth-
er vehicles.
On your
Alfa 147 GTA, Alfa Romeo
has implemented the best manufacturing
technologies to effectively protect the body-
work against corrosion.
These include:
– Painting products and systems which
give the vehicle particular resistance to cor-
rosion and abrasion.
– Use of galvanised (or pretreated) steel
sheets, with high resistance to corrosion.
– Spraying the underbody, engine com-
partment, wheel arches and other parts with
highly protective wax products.
fig. 17
A0A0425m
– Spraying of plastic parts, with a protec-
tive function, in the more exposed points:
underdoor, inner wheel arch linings, etc.
– Use of “open” boxed sections to pre-
vent condensation and pockets of moisture
from triggering rust inside.
VEHICLE EXTERIOR AND
UNDERBODY WARRANTY
TheAlfa 147 GTAis guaranteed
against perf oration due to rust of any orig-
inal element of the structure or body. For the
general terms of this warranty, refer to the
Warranty Booklet.

VEHICLE MAINTENANCE
241
ADVICE FOR PRESERVING
THE BODYWORK
Paint
The paintwork does not only serve an aes-
thetic purpose but also protects the under-
lying sheet metal.
In the case of deep scrapes or scores, you
are advised to have the necessary touch-
ing up carried out immediately to avoid the
formation of rust.
Only original products should be used for
touching up paint (see “Body paint identi-
fication plate” in the “Technical Specifica-
tions” chapter).
Normal paint maintenance consists in
washing at intervals depending on the con-
ditions and environment of use. For exam-
ple, in highly polluted areas, or if the roads
are sprayed with salt, it is wise to wash the
car more frequently.Do not wash the vehicle after it has been
left in the sun or with the bonnet hot: this
may alter the shine of the paintwork.
Exterior plastic parts must be cleaned in
the same way as the rest of the vehicle.
Where possible, do not park under trees;
the resinous substance many species release
give the paint a dull appearance and in-
crease the possibility of triggering rust
processes.
IMPORTANTBird droppings must be
washed off immediately and thoroughly as
the acid they contain is particularly aggres-
sive.
Windows
Use specific products to clean the windows.
Use clean cloths to avoid scratching or al-
tering the transparency of the glass.
IMPORTANTThe inside of the
rearscreen should be wiped gently with a
cloth in the direction of the filaments to
avoid damaging the heating device. Detersives pollute water.
The car should therefore be
washed in areas equipped
for the collection and purification
of the liquid used in the washing
process.
To correctly wash the car:
1) Remove the aerial from the roof to pre-
vent damage to it if the car is washed in
an automatic system.
2) Spray the vehicle with a low pressure
jet of water.
3) Pass a sponge moistened with a light
detergent solution, rinsing the sponge fre-
quently.
4) Rinse well with water and dry with a
jet of air or chamois leather.
When drying, take particular care with the
less visible parts like door surrounds, bon-
net and around the headlights where wa-
ter may stagnate. The vehicle should not be
taken to a closed area immediately, but left
in the open so that residual water can evap-
orate.