change time AUDI A3 2012 Owner´s Manual

Intelligent technology Notice about data
recorded by vehicle
control modules
Your vehicle is not equipped with an Event Da­
ta Recorder (EDR), installed by some manu­
facturers for the express purpose of capturing
data for retrieval after an accident or crash
event. EDR's are sometimes called "crash re­
corders".
Some state laws restrict the retr ieval or down­
loading of data stored by EDR's that were in­
stalled in a vehicle for the express purpose of
retrieving data after an accident or crash
event without the owner's consent.
Although your vehicle is not equipped with an
EDR, it is equipped with a number of electron­
ic control modules for various vehicle systems
such as, for examp le, engine function, emis­
sion control, as well as for the airbags and
safety belts.
These electronic control modules also record
vehicle-related data during norma l vehicle op­
eration for diagnostic and repair purposes.
The recording capacity of the electronic con­
trol modules is limited to data (no sound is re­
corded) and only a small amount of data is ac­
tually recorded over a very limited period of
time and stored when a system fault or other
condition is sensed by a control unit. Some of
the data then stored may relate to vehicle
speed, direction, braking as we ll as restraint
system use and performance in the event of a
crash or other condition. Stored data can only be read and downloaded with special equip­
ment.
Electronic Stabilization
Program (ESP)
Description
ESP helps to improve road holding and vehicle
dynamics to help reduce the probability of
skidding and loss of veh icle control. It works
only when the engine is running. ESP detects
Intelligent technology 161
certain difficult driving situations, including
when the vehicle is beginning to spin (yaw)
out of control and helps you to get the veh icle
back under control by se lectively braking the
wheels, and/or reducing engine power and
providing steering ass istance to help hold the
vehicle on the driver's intended course. The in­
dicator light
G] in the instrument cluster
blinks when ESP is taking action to help you
control the vehicle.
ESP has limitations. It is important to remem­
ber that ESP cannot overcome the laws of
physics.
It will not always be able to help out
under all conditions you may come up against.
For example, ESP may not always be able to
help you master situations where there is a
sudden change in the coefficient of friction of
the road surface. When there is a section of dry road that is suddenly covered with water,
slush or snow, ESP cannot perform the same
way it would on the dry surface . If the vehicle
hydroplanes (rides on a cushion of water in­
stead of the road surface), ESP will not be
able to help you steer the vehicle because con­
tact with the pavement has been interrupted
and the vehicle cannot be braked or steered .
During fast cornering, particularly on winding
roads, ESP cannot always deal as effectively
with difficult driving situations as at lower
speeds. When towing a trailer, ESP is not able
to help you regain control as it would if you
were not tow ing a trailer.
A lways adjust your speed and driving style to
road, traffic; and weather conditions. ESP can­
not override the vehicle's physical limits, in­
crease the available traction, or keep a vehicle
on the road if road departure is a result of
driver inattention. Instead, ESP improves the
poss ibility of keeping the vehicle under con­
trol and on the road dur ing extreme maneu­
vers by using the driver's steering inputs to
help keep the vehicle going in the intended di­
rection. If you are traveling at a speed that
causes you to run off the road before ESP can
provide any assistance, you may not experi­
ence the benefits of ESP .
•
•

164 Intelligent technolog y
Faults in the bra ke sys tem
If you should notice a sudden increase in
b rake peda l travel, then one of the two brake
circuits may have failed¢.& .
Low brake flu id le vel
Malfunct ions can occur in the brake system if
the brake fluid level is too low . T he brake fluid
l eve l is moni to red electronica lly .
Bra ke lining w ear st atu s
Brake l ining wear may be checked by visual in­
spection of the condition of the brake pads
through the openings in the whee l. If neces­
sa ry, the wheel may be removed for this in ­
spection
¢page 236, Wheel change.
A WARNING
-You should perform braking maneuvers
for the purpose of cleaning the brake
system on ly if road conditions permit.
Other road users must not be put at risk -
you may cause an acc ident!
- Before descending a steep grade, reduce
speed and shift transmiss ion into a lower
gear or lower driving range . Do not ride
the brakes or hold the pedal down too long or too often. This cou ld cause the
brakes to get hot and dimin ish braking
efficiency.
- Do not "r ide the brakes" by resting your
foot on the pedal when yo u do not intend
to bra ke . This may cause the brakes to
overheat, premature wear and increased
stopping distance .
- Under certain climat ic and operating
condit ions such as passing through wa­
ter, driving in heavy rain or after washing
the vehicle, the effectiveness of the brakes can be reduced. In winter, ice can
accumulate on the brake pads, linings,
discs and drums . Carefully apply brakes
for a test . Brakes will dry and ice coat­
ings will be cleaned off after a few care­
ful brake applications.
- Driv ing for an extended period of time on
salt-covered roads w ithout us ing your
brakes can also affect braking efficiency . Clean off accumulated salt coating from
brake discs and pads with a few careful
brake applications.
- If you damage the front spoiler, or if you
install a different spoiler, be sure the a ir
flow to the front brakes is not obstruct­ ed. Otherwise the brake system could
overheat reducing the effectiveness of
the entire brake system.
- Failure of one brake circuit will impa ir
the braking capab ility result ing in an in­
creased stopping distance. Avoid driving
the vehicle and have it towed to the near­
est a utho rized Audi dea le r or q ualified
wo rkshop.
Brake booster '
The brake booster adds extra broking power.
The brake booster works with vacuum pres­
sure which is created only when the eng ine is
run ning ¢.&_ .
_&. WARNING
-Never let the vehicle roll to a stop with
the engine shut off.
- I f the b rake booster is not working, for
examp le when towing yo ur vehicle, or
because the brake booster has somehow
been damaged, the brake pedal must be
pressed conside rably harder to make up
for the lack of booster assistance.
Functioning of Anti-Lock Brake System
(ABS)
ABS prevents the wheels from locking up un­ der broking.
.
The ABS contributes effectively to vehicle con­
trol since it prevents the whee ls from
locking
when the brakes are applied. This means that
the vehicle remains steerable and is less likely
to sk id .
With ABS you do not need to pump th e
brake. Ju st hold the b ra ke pedal down.

190 Fuel supply and filling your fuel tank
- Blend must contain not more than 1S%
MTBE.
Sea sonally adju sted ga soline
Many gaso line g rades are blended to perform
espec ia lly we ll for winte r or summe r d riv ing .
Du ring seasonal change-ove r, we suggest that
you fill u p at busy gas s tat ions where the sea­
sona l adjus tment is more likely to be made in
time .
(CT) Note
-Methanol fuels which do no t mee t these
r equirements may cause co rrosion and
damage to plastic and rubber compo ­
nents i n the fuel system .
- Do no t use fue ls that fai l to meet the
spec ified criteria in this chapter.
- If yo u are unable to de term ine whether
or not a particular fue l blend meets the
specifications, ask your service station or
i ts fuel s upplier.
- Do not use fue l for which the contents
cannot be identified.
- Fuel sys tem damage and performance
problems resulting from t he use of fuels
different from those specified a re not
the respons ibility of Audi and are not
covered under the New Vehicle or the Emission Control System Warranties.
- If you experience a loss of fue l economy
or driveability and performance prob­ l ems due to the use of one of these fuel
blends, we recomme nd that yo u sw itch
to unblended fuel.
Gasoline additives
A majo r concern among ma ny auto manufac ­
turers is carbon deposit build -up caused by
the type of gasoline you use .
A lthough gasoline grades differ from one
manuf acturer to anothe r, they h ave certa in
things in common. All gaso line g rades contain
substances that can cause deposits to co llect
on vital engine parts, such as fuel injectors
and intake valves. Although most gasoline
brands incl ude additives to keep engine and fuel systems clean, they a
re not equally effec­
tive .
A udi re commends using TOP TI ER De tergent
Gasoline. For mo re info rmat ion on TO P TI ER
Detergent Gasoline, please go to the official
website (www.toptiergas.com).
After an extended period of using inadeq uate
f uels, bui lt-up carbon deposi ts can rob yo ur
engine of peak performance.
(D Note
Dam age or ma lf u nction due to poor fuel
quality is not covered by the Au di New Ve­
hi cle Limited Warran ty.
Diesel fuel
Applies to veh icles: w ith diesel engine
Always use ULSD (Ultra Low Sulfur Diesel) sul­
fur content 15 ppm or less.
T he ULSD ( Ultra Low Sulfur Diese l) meets the
ASTM-D-97S (grade 2).
Die sel fu el with a higher c oncentration than
ULSD -Die sel No. 2 ASTM 0 975 and Bio-die­
sel with a higher c oncentration than S
% like
B11 , B20 or B100 are strictl y prohib ited.
Se rv ice stat io n fue l pumps a re labe led with
the cor rect fuel information fo r easy recogn i­
t ion by the use r. If the d iesel fue l pump is no t
l abeled ask the station operator what fue l is
being dispensed before filling up you r vehicle .
Serv ice stat ions offering d iesel fue l are gene r­
ally located on truck routes or major high­
ways . Directories of diesel fuel stations a re
u su a lly availab le at d iese l fue l stat ions .
Some sta tes in the USA req uire permi ts to
purchase diese l fue l. Check wi th your Sta te
Motor Vehicle Department.
Diesel fue l may no t be ava ilable outside t he
USA and Canada. Be s ure to che ck befo re trav -
eling to othe r countries . .,..

198 Checking and filling
Mo dern engine lubrication has taken a quan­
tum leap in the last few years. Many synthetic
oils ava ilable today provide better engine lu­
brication that can outlast traditional petrole­
um-based o ils, making them a smart choice
for use throughout the life of your Audi .
Whether you use synthetic or petroleum ­
based engine oil, the oil that yo u use must
conform to Audi 's oil quality standard
VW 502 00 (veh icles with gasoline engine)
and VW 507 00 (vehicle with diesel engine) to he lp keep your vehicle's eng ine runn ing
smoothly and help prevent the fo rmation of
harmf ul depos its , somet imes ca lled "sludge,"
that over t ime can lead to expensive repairs.
At the time of printing , engine oils availab le in
the U .S . and Canada that meet the exa cting
specifi cations o f A ud i oi l st andard VW 502 00
(vehicles wi th gaso line engine) and
VW 507 00 (vehicles with diese l engine) are
synthetic engine oils . This does not mean,
however, that every synthetic engine oil wi ll
meet Audi oil standard VW 502 00 (gasoline
engines) and VW 507 00 (d iesel engines). So
a lway s be sure that you use a n approved o il.
To help prevent the fo rmation of harmful de­
posits use only oil w ith the following specifi ­
c ations printed on the oil conta iner:
- Ga soline engines: Audi oil standard
VWS0200
- Die sel engines: Audi oil standard
vw 50 7 00
Oil container labe ls may carry t he specifica­
tion s ingly or in comb inat ion with other des ig ­
nations and oil qua lity standards.
Vi scosity
Eng ine oi ls are graded according to their v is ­
cosity . The proper v iscosity grade o il for your
engine depends on cl imactic or seasonal con­
d itions w here you dr ive. Yo u can use oi l w ith a
viscosit y grade of SAE 5W-40 a cross all tem ­
perat ure ranges for normal d riving conditions .
H owever, if eng ine o il viscos ity grade SAE
5W-40 is not ava ilable, you can a lso use vis­
cosity g rade SA E 5W-30 or SAE OW-40 as long as it meets A
udi o il quality standard
VW 502 00 (vehicles wit h gasoline engine) or
VW 50 7 00 (vehicles wit h diese l eng ine) spec ­
ifications.
Beca use engine o il that meets the Audi oil
sta ndard may not be availab le everywhere
when you need it, we strong ly recommend
that you a lways carry with you an extra qua rt
( li ter) of oil that express ly conforms to the
VW 502 00 (vehicles wit h gasoline eng ine) o r
VW 507 00 (vehicles w it h diesel eng ine) spec­
i fication, i n case you have to top off the oi l
wh ile on the road.
App lies to vehicle s with gasoline engin e on­
ly:
Only if the level of the o il is at or below the
min imum ma rk - and no o il that expressly
c onfo rms to Audi oil standa rd VW 50 2 00
specifica tions is available - may you top off
with a high quality engine o il , pre fera bly syn ­
t h etic-based, that meets ACEA A3 or API SM
specifications, but even then, only in viscosity
grades SAE 5W-40, SA E 5W-30, or SA E
OW-40. However, dur ing the entire time be­
tween oil change interva ls, never top off with
more than a total of 0.5 qt/liter engine o il
that does not confo rm to Aud i oil spec ification
vw 502 00 .
Applies to vehicles with diesel engine only:
Only if the level of the oil is at or be low the
min imum ma rk - and no o il tha t expressly
confo rms to Audi oil standa rd VW 507 00
spe cifications is available - may you top off
wi th a high quali ty engine o il, that meets
AC EA C3 o r API CF specifica tions, but even
then , on ly in viscosity grades SAE 5W-40 , SAE
5W-30, or SAE OW-40 . However, during the
entire t ime between oil change intervals, nev­
er top off with more than a tota l of 0.5 qt/li­
ter engine oil that does no t conform to Aud i
o il specification VW 507 00 .
For more information about eng ine oi l that
has been approved for your veh icle, please
contact e ither your au thorized Aud i dealer or
Audi Custome r Re lations at 1 (800) 822 -2834
o r vis it our web site at www.audiusa .com or
www.aud icanada .ca. He re you w ill also find a
c ur rent l ist of oi ls (manufac turers, brand .,.

names etc.) that conform to Audi oil standard
VW 502 00 (vehicles with gasoline engine) or
VW 507 00 (vehicles with diesel engine).
C hang ing th e engin e oil
The engine oil and oi l filter must be changed
according to the m ileage (kilomete rs) and
time inte rva ls specified in yo ur vehicle's War­
ranty
& Maintenance booklet. Do not exceed
these intervals -harmful deposits from old
engine oil can reduce engine performance and
can lead to expensive eng ine repairs.
Changing the o il at the recommended inter ­
va ls is so very important because the lubricat ­
ing properties of oi l decrease gradually during
norma l vehicle use . If you are not sure when
you have your oi l changed, ask your author­
ized Audi Service Advisor.
Under some circumstances the engine oi l
should even be changed more frequently.
Change o il more often if you drive mostly
short distances, operate the vehicle in dusty
areas or mostly under stop-and-go traffic con­
d itions, or when you use your veh icle where
temperatures stay below freezing point for
l ong periods.
Detergent addit ives in the o il w ill make fresh
oil look dark after the eng ine has been run­
n ing for a short time. This is norma l and is not
a reason to change the o il mo re often than
r ecommended.
D amage or ma lf u nction s du e to lac k of
ma int enance
It is essential that you change your oil at the
recommended interva ls using only engine oil
that complies with Audi oil standard
VW 502 00 (veh icles with gasolin e engine) or
VW 507 00 (veh icles with diese l engi ne). Yo ur
L im ited New Vehicle Warra nty does not cover
damage or ma lfunctions due to failure to fol­
l ow recommended maintenance and use re­
quirements as set forth in the A udi Owner's
Manual and Warranty
& Maintenance book let.
Your dealer will have to deny warranty cover­ age un less you present to the dea ler proof in
the form of Service or Repa ir Orders that a ll
Checking and fillin g 199
scheduled maintenance was performed in a
timely manner.
· Engine oil consumption
The engine in your vehicle depends on an ade ­
quate amount of oil to lubricate and cool all
of its moving parts.
In order to prov ide effective lubrication and
cooling o f inte rna l engine components, all in ­
ternal combustion engines consume a certain amount of oil. Oil consumpt ion varies from
engine to engine and may change sign ificantly
over the life of the engine. Typically, engines
with a spec ified break-in period (see
Q page 169) consume more oil during the
break-in pe riod than they consume after o il
consump tion has stabilized.
Under normal cond itions, the rate of oi l con­
sumption depends on the quality and viscos ity
of the oil, the RPM (revolut ions per minute) at
which the engine is operated, the ambient
temperature a nd road conditions. Further fac ­
tors are the amount of oil dilut ion from wa ter
condensation or fue l residue and the oxida ­
tion level of the oi l. As any engine is subject to
wear as mi leage builds up, the oil consump­
tion may increase over time until replacement
of worn components may become necessary.
With a ll these variab les coming into p lay, no
standard rate of oil consumption can be es­
tablished or spec ified. There is no alternative
to regular and frequent check ing of the oil lev­
el, see
Not e.
If the yellow engine oil level warning symbo l
in the instrument cluster
Ill! lights up, you
shou ld check the oil leve l as soon as possib le
with the oil dipstick q page 200 . Top off the
o il at your earliest conven ience
Q page 200.
&_ WARNING
Before you chec k anything in the engine
compartment, always read and heed al l
WARNI NGS
Q .&. in Working in the engine
compartment on page 194 .
•
•

Before you check anything in the engine com­
partment,
always r ead and heed all W ARN­
ING S
¢ A in Working in the engine compart­
ment on page 194.
.. Park your vehicle so that it is horizontally
level.
.. Stopping the eng ine.
.. Unscrew the cap
«t=;,. to the engine oil fill ing
hole
¢fig. 161 .
.. Carefully top off with the appropriate o il in
0 .5 lite r doses.
.,. Check the o il leve l again after two minutes
¢ page 200.
.,. Top off the oil again, if necessary.
.. Screw the cap back on the filling hole and
slide the oil dipstick in as far as it will go.
A WARNING
- While topping off, the oil must not come
in contact with hot engine parts -fire
hazard!
- The oil filler cap must be properly se­
c u red to prevent oil from being sprayed
on the hot engine and exhaust system
when the eng ine is running - fire hazard!
- If your skin has come in contact w ith the
engine oil, you must subsequently
cleanse it tho roughly .
(D Note
-The oil leve l must not be above range~
- danger of converter or eng ine damage!
Contact a qualified workshop to draw off
oi l, if necessary .
-Audi does not recommend the use of o il
add iti ve s. They may damag e the engine
and adve rsely affect you r New Vehicle
Limited Warranty .
@) For the sake of the environment
-Under no circumstances can the o il come
i n contact with the sewage network or
the soil.
- Observe and follow legal regu lations
when d isposing of empty oil containers.
Checkin g and fillin g 201
Changing the engine oil
We recommend that have your oil changed by
an authorized Audi dealer or a qualified serv­
ice station .
Before you check anyth ing in the eng ine com­
partment,
alw ays read and h eed all WARN­
INGS ¢
A in Working in the engine compart­
ment on page 194 .
The engine oil mus t be changed according to
the intervals spec ified in your Warranty
&
Maintenance booklet. This is very important
because the lubricat ing properties of o il di­
min ish g radually du ring normal vehicle use .
Under some c ircumstances the engine oil
should be changed more frequent ly . Change
o il more ofte n if you drive mostly short d is­
tan ces, opera te the veh icle in dus ty a reas or
u nder p redominant ly stop -and-go traffic con­
ditions, or have you r vehicle where tempera ­
tures remain below freezing for extended pe­
riods .
Dete rgent additives in the oil will make fres h
o il look dar k after t he engine has been run ­
ning for a sho rt time. T his is normal a nd is not
a reason to change the oil more often t han
recommended.
Because of the prob lem of p roper disposal,
along with the specia l tools and necessary ex­
pertise req uired, we strongly recommend that
you have your oil changed by an authorized
Audi dealer or a qualified service station.
If you choo se to change your oil your self ,
please note the fo llowing important informa ­
tion:
A WARNING
To reduce the risk of personal injury if you must change the eng ine oil in your vehicle
yourself:
- Wear eye protect ion.
- To reduce the risk of burns from hot en-
gine oil, let the engine cool down to the
touch.
•
•

206 Checking and filling
Brake fluid
Checking brake fluid level
The brake fluid level can be checked with a
quick glance .
Fig. 163 Engine compartme nt: brake flu id reservo ir
Before you check anything i n the engine com ­
partment,
a lwa ys rea d and h eed a ll WA RN·
ING S c:> & in Working in the engine compart ­
ment on page
194.
~ Read the brake fluid level from the bra ke
fluid reservoir. The brake fluid Level must be
between the "MIN" and "MAX" markings
9fig. 163 .
The brake f lu id rese rvoir is located at the rear
partition of the engine compartment on the
L eft side
¢page 196.
The fluid level may drop slightly after some
time due to the automatic adjustment of the b rake pads . This is not cause for alarm .
I f the b rake fluid Level falls
considerably be­
low the "MIN" mark, the brake wa rning/ind i­
cator Light (U.S. models:
1111 , Canadian
models:
llllt will come on c:> page 15 . Do not
continue to operate the vehicle . The complete
brake system sho uld be thoroughly checked
by an authorized Audi dealer or other quali­
fied facility and the cause corrected. If the
brake fluid level is too low, the brake warn ing/
indicator Light w ill illuminate . Contact an au­
thor ized Audi dealer
imm ediatel y.
Changing brake fluid
Have the brake fluid changed by an experi­
enced technician .
Brake fluid absorbs moisture from the air. If
the water content in the brake fluid is too high, corrosion in the brake system may result
after a period of time . The boiling point of the
brake flu id will also decrease conside rably and
decrease braking pe rformance.
Therefore, the brake fluid must be changed
eve ry two y ears. Always use new brake flu id
which conforms to Federal Motor Veh icle
Standard "F MVSS 116 DOT 4".
The brake fluid reservoir can be diff icult to
reach, therefore, we recommend that you
have the b rake fluid changed by your author­
ized
Audi dealer . Your dealer has the correct
tools, the right brake fl uid and the know -how
to do this for you.
A WARNING
- Brake fluid is poisonous . It must be stor­
ed only in the closed original container
out of the reach of children!
- Brake failure can resu lt from o ld or inap­
propriate brake flu id. Observe these pre­
cautions:
- Use only brake f luid that meets SA E
specifica tion
J 1 7 03 and conforms to
Federa l Moto r Ve hicl e Standard 1 16.
Always check with yo ur authorized Aud i
dealer to make sure yo u are using the
correct brake fluid. The correct type of brake f lu id is also ind icated on the
brake flu id reservoir.
- The brake fluid must be new. Heavy use
of the brakes can cause a vapor lock if
the brake fluid is left in the system too
l ong. This can seriously affect the effi­
c iency of the brakes as well as your
safety. This cou ld resu lt in an accident.
(D Note
Brake fluid will damage the paint of your
vehicle .

@ For the sake of the environment
Because of the problem of proper disposal
of brake fluid as we ll as the special tools
req uired and the necessary expert ise, we
recommend that you have the brake fluid
changed by your author ized Audi dealer.
Battery
General information
All work on the battery requires technical
knowledge!
F ig . 1 64 Eng ine co mpa rtment: Batte ry w it h cover*
The battery is located in the engine compart­
ment
c::> fig. 164 and is near ly m ain te nance­
fre e.
The condition of the battery is checked in the
framework of the inspection.
Disconnecting the battery
The batte ry should not be disconnected. Some
ve hicl e functions such as power windows are
unavailable if the battery termina ls are dis­
connected. These funct ions have to be re­
l earned after the battery term inals are con­
nected aga in. To prevent this, the battery
should only be disconnected from the vehicle
electrical system if absolutely necessary .
Function
Power window
one-touch up/
down function
Master key with
remote control
Reprogramming
c::, page 45, Reactivating
the system after battery
disconnection
Synchronization
~page 38
Checkin g and fillin g 207
Reprogramming
Digita l clock c::, page 11
ESP indicator light The indicator ligh t goes
out after driving a few
meters
Vehicl es not driven for long periods and
sho rt -d is tance op eration
If you do no t drive your vehicle for several
days or weeks, electrical consumers are grad ­
u ally scaled back or switched off . This reduces
energy use and ensures the vehicle will be
able to start after long periods of time
c::, page 167. Some convenience functions
such as opening w it h the remote control key
may not be available. These conve nience func­
tions wi ll be available again once you switch
the ignit io n on and sta rt the engine. Even
whe n consume rs a re switched off, the battery
will become deeply discharged by stand -by
power consumers if the vehicle is not driven
for several months . Deep discharging results
in a chemical reaction that destroys the inside
of the battery. The battery must be charged
every month to prevent th is
c::, page 209. Do
not disconnect the battery or the anti-t heft
alarm system* will not work .
Winter operation
Cold weather places higher demands on the
battery. This results in reduced starting abili­
ty. Have the battery checked and recharged if
necessary befo re the cold weather begins.
Avoid unnecessary power consumpt ion, par­
ticularly in city traffic or when traveling only
short distances . Let your authorized Audi
dealer check the capacity of the vehicle bat­
tery before winter sets in
c::, page 209 . A well
c harged bat tery will not o nly prevent s tarti ng
problems when the weather is cold, but will
also last longer .
(D Note
-All wo rk on the batte ry requ ires techn i­
cal know le d ge. P lease con ta ct an Audi
dealership or another authorized fa cility
lill>

-When a battery is charged, it produces
hydrogen gas which is explosive and
could cause personal injury.
- Always keep the battery well out of the
reach of children.
- Before work is done on the electrical sys­
tem, disconnect the negative ground ca­
ble.
- Before performing any work on the elec­
trical system, switch off the engine and
ignition as well as any electrical equip­
ment. The negative cable on the battery
must be disconnected. If you are just go­
ing to replace a light bulb, then it is
enough to switch off the lights.
- Before disconnecting the battery, switch
off the anti-theft alarm system! Other­
wise you will set off the alarm.
- When disconnecting the battery, first
disconnect the negative cable and then
the positive cable.
- Before reconnecting the battery, make
sure all electrical consumers are switch­
ed off. Reconnect the positive cable first
and then the negative cable. Never inter­
change the cables -this could start a fire!
- Never charge a frozen or a thawed-out
battery. It could explode! If a battery has
frozen, then it must be replaced. A dis­
charged battery can freeze over at
32 °F
(0 oc).
-Mak e sure the vent hose is always attach­
ed to the opening on the side of the bat­
tery.
- Never use batteries which are damaged.
There is the danger of an explosion! Al­
ways replace a damaged battery.
_& WARNING
California Proposition 65 Warning:
- Battery posts, terminals and related ac­ cessories contain lead and lead com­
pounds, chemicals known to the State of
California to cause cancer and reproduc­
tive problems. Wash hands after han­ dling.
Checking and filling 209
(D Note
- Do not disconnect the vehicle battery
when the ignition is switched on or when
the engine is running, otherwise, you will
damage electronic components in the
electrical system.
- When working on the engine, protect the
battery housing from ultraviolet (UV)
rays by not parking the vehicle in direct
sunlight .
- If your vehicle is going to stand for a
long period of time without being driven,
protect the battery from "freezing", oth­
erwise it will be damaged and will then
have to be replaced
~ page 209.
Charging of battery
All work on the battery requires technical knowledge!
Fig. 165 E ngine compart ment: conne ctors for a charg­
er and jump start cables
A charged battery ensures good starting per­
formance . A discharged battery can
freeze at
temperatures of only
O 0C. A frozen or thawed
battery must be replaced, as the battery
housing may be cracked due to freezing and
could therefore leak acid.
.,. Always read and heed all WARNINGS be­
low~ .&, and ~.&, in
Working on the bat­
tery on page 208.
... Switch off the ignition and all electrical con­
sumers .
.,. Make sure the area is well ventilated when
you charge the battery.
.,. Connect charger cables.
Charger cables
must always be connected POSITIVE
G to ..,.

214 Tires and wheels
Maximum loaded vehicle weight
means the sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight, and
(d) Production options weight
Maximum (permissible) inflation pressure
means the maximum cold inflation pressu re
to which a tire may be inflated. Also called
"maximum inflation p ressure."
Normal occupant weight
means 150 lbs. (68 kilograms) times the
number of occupants seated in the vehicle up
to the total seating capacity of your vehicle.
Occupant distribution means distribution of occupants in a vehicle .
Outer diameter means the overa ll diameter of an inf lated new
tire.
Overall width
means the linear distance between the exteri­
ors of the sidewalls of an inflated tire, includ­
ing e levations due to labeling, decorations, or
protective bands or ribs.
Ply
means a layer of rubber-coated parallel cords.
Production options weight
means the comb ined weight of those installed
regular production options weighing over 5
lbs . (2 .3 kg) in excess of those standard items
which they replace, not previously considered
in curb weight or accessory weight, including
heavy duty brakes, r ide leve lers, roof rack,
heavy duty battery, and specia l trim .
Radial ply tire
means a pneumatic tir e in which the p ly cords
that extend to the beads are laid at substan­
tially 90 degrees to the centerline of the
tread . Recommended inflation pressure
see
~
page 213, Cold tire inflation pressure.
Reinforced tire
means a t ire designed to operate at higher
loads and at higher inflation pressures than
the corresponding standard tire . Re inforced
t ir es my be identified as "XL", "xl", "EX TRA
LOAD", or "RF" on the sidewall.
Rim
means a metal support for a tire or a t ire and
tube assembly upon which the tire beads are seated.
Rim diameter
means nom inal d iameter of the bead seat. If
you change your wheel s ize, you w ill have to
purchase new tires to match the new r im di­
ameter .
Rim size designation
means rim diameter and width.
Rim width
means nominal distance between rim flanges .
Sidewall
means that portion of a tire between the
t read and bead.
Speed rating (letter code)
means the speed at which a tire is designed to
be driven for extended periods of time. The
ratings range from 93 mph (150 km/h) to
186 mph (298 km/h)
~ page 224 . You may
not find this information on all tires because
it is not requ ired by law.
The speed rating letter code, where applica­
ble, is molded on the tire sidewall and indi­
cates the max imum pe rmissibl e road speeds
~ A in Winter tires on page 228.
Tire pressure monitoring system*
means a system that detects when one or
more of a veh icle's tires are underinflated and
illuminates a low tire pressure warning tell­
tale.