210 Cleaning and protec tio n
Cor ro sion pr ote cti on
The engine compa rtment and transmiss ion
hav e been corrosion-protect ed at th e factory.
Good ant i-corrosion t reatme nt is very impor
tant, particularly in the winter. If the veh icle
is frequently driven on sa lt treated roads , the
enti re engin e compartment and pl enum panel
should be thoroughly cleaned at the end of
wint er and retreated to pr eve nt salt damag e.
At the same t ime, the underside of the vehicle
should be washed as well.
If the engine compartment is cleaned at any
t ime with gr eas e re moving solutions
1>, or if
you have the engine washed, the anti -corro
sion treatmen t is almost always removed as
well. It is therefore essential to have a long
lasting corrosion protection reapplied to all
surfaces, seams, joints and components in the
engine compartment .
_& WARNING
Be aware: The engine compartment of any
motor vehicle is a potentially ha zardous
area .
- Before working in the engine compart
ment, be s ure to read the in formation
Q page 216.
-Before reaching into the front plenum
pane l, always remove the ignition key .
Otherw ise, the windshield wiper system
cou ld unintentionally be switched on,
poss ibly causing personal injury from the
moving wiper linkage.
- Never reach into the area around or
touch the radiator fan. The auxiliary fan is temperature controlled and can switch
on suddenly -even when the ignit ion is
off .
- Do not wash, wax or dry the engine w ith
the engine running . Moving or hot pa rts
cou ld injure you .
- Do not clean the underside of the chas sis, fenders , wheel covers, or other hard
1l Use only th e correct clean in g so lu ti on s. Ne ver use ga s
o lin e or diesel fue l.
to reach parts without protecting your
hands and arms . You may cut yourself on
sharp-edged metal parts.
- Always read and heed all WARNINGS and
other information
Q page 200.
-Apply the parking brake.
- Move selector lever of automatic trans-
mission to "P" (Park); put manual trans
mission in Neutral.
- Always let the engine cool down . Hot
components will burn skin on contact.
- To reduce the risk of being burned, never
open the hood if you see or hear steam
or coolant escaping from the engine
compartment . Wait until no steam or
coolant can be seen or heard before care
fully opening the hood .
- Keep children away from the engine com
partment .
- Never spill fluids on hot engine compo
nents. They can cause a fire.
- Never touch the radiator fan. The auxili
ary electric fan is temperature controlled
and can switch on suddenly.
- Never open the coolant reservoir cap
when the engine is still warm. The cool
ant system is pressurized and hot cool ant could spray out .
-Protect your face, hands and arm from
steam or hot engine coolant by placing a
thick rag over the cap when you open the
coolant reservoir .
- Do not remove the engine cover under
any circumstances. This increases the
risk of burns.
- If work on the fuel system or the electri
cal system is necessary:
- Always disconnect the battery.
- Never smoke or work near heaters or
open flames. Fluids in the engine com
partment could start a fire.
- Keep an approved fire extinguisher im
mediately available.
- To avoid electrical shock and personal in
jury while the engine is running or being
started, never touch:
- Ignition cables
- Other components of the high voltage
electronic ignition system.
-If you must perform a check or repair
with the engine running:
Checking and filling 217
- First, fully apply the parking brake,
move selector lever of automatic trans
mission to "P" (Park); put manual
transmission in Neutral.
- Always use extreme caution to prevent
clothing, jewelry, or long hair from get
ting caught in the radiator fan, V -belts
or other moving parts, or from contact ing hot parts. Tie back hair before
starting, and do not wear clothing that
will hang or droop into the engine.
- Minimize exposure to emission and
chemical hazards~,& .
.8, WARNING
California Proposition 65 Warning:
- Engine exhaust, some of its constituents,
and certain vehicle components contain
or emit chemicals known to the State of
California to cause cancer and birth de
fects and reproductive harm. In addition,
certain fluids contained in vehicles and
certain products of component wear con
tain or emit chemicals known to the
State of California to cause cancer and
birth defects or other reproductive harm.
- 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 harms. Wash hands after handling.
(D Note
When adding fluids, always make sure that
they are poured into the proper container
or filler opening, otherwise serious dam
age to vehicle systems w ill occur.
@ For the sake of the environment
To detect leaks in time, inspect the vehicle
floor pan from underneath regularly. If
you see spots from oil or other veh icle flu
i ds, have your vehicle inspected by an au
thorized Audi dealer . •
•
scalding from hot coo lant by following
these steps.
- Turn
off the engi ne and a llow it to cool
down.
- Protect your face, hands and arms from
escapi ng fl uid and steam by cover ing
the cap with a large, thick rag .
- Turn the cap slowly and very ca refully
i n a cou nte r-clockw ise dir ect ion while
a pply ing lig ht, downwa rd p ress ure on
the top of the cap.
- T o avo id being burned, do no t sp ill an
tifree ze o r coolan t on t he exh aust sys
tem or ho t engine parts . Un der certain
conditions, the ethylene glyco l in en
gine coolant can catch fire .
- Antifree ze is poisono us. Always store an
tifreeze in its or iginal co ntainer and we ll
o ut o f the reac h of children.
- If you drain the coolant , it must be
caught and safely stored in a p roper con
tainer clear ly marked "poison".
(D Note
- Coolant po llutes the env ironment and
could ca use a n engine fire . Excess coo l
ant wi ll be forced out through the pres
sure re lief va lve in the cap when the en
gine becomes hot.
- If, in an emergency, only water can be
added , the correct ratio between water
and antifreeze¢
page 223 must be re
stored as soon as possib le .
@ For the sake of the environment
Drained coolant should not be re used . Al
ways dispose of used c oolant while observ
ing all envir onmental regulations .
Radiator fan
The radiator fan switches on automa tically by
itself
T he radiator fan is driven by the engine via the
V-be lt. The viscous clutch regulates the speed
of the fan according to the temperature of the
coolant .
Checkin g and fillin g 225
An auxiliary electric radiato r fan* sw itches on
and
off depending on coolant temperature
and othe r vehicle ope rat ing con ditions.
After yo u switc h the engi ne off, the aux iliary
f an can con tinue r unning for up to 10 minutes
- even with the ignition off. It can even switch
on again later by itself¢ & , if
- t he temperatu re of the engine coo lant rises
due to the heat b uild -up from the en gine in
the engi ne compartment, or
- the engine compartment heats up be cause
the vehicle is parked in intense sunlight.
A WARNING
- To reduce the risk of personal in jury nev
er touch the radiator fan.
- The a uxiliary electric fan is temperat ure
contro lled and can switch on sud denly
even when the engine is not running.
- The a uxiliary radiator fa n switches on a u
tomatically when the engine coo lant
reaches a certain temperature and will
continue to run until the coo lant temper
ature drops .
Brake fluid
Checking brake fluid level
The brake fluid level can be checked with a
qui ck glance.
Fig. 17 3 En gin e compar tment: Cover o n the brak e flu
i d reservoi r
Before you check anyth ing in the eng ine com
partment ,
always re ad and heed all WARN
INGS c::> ,& in Working in the engine compar t-
ment on page 216 . .,..
260 Fuses and bulb s
No.
5 Sound actuator/exhaust sound
tuning
6 Headlight range control sys
tem/cornering light
7
8
Headlight (corner ing light)
Control modules (electrome
chanical parking brake, shock
absorber, quattro sport, trailer
hitch), DCDC converter
9 Adaptive cruise contro l
10 Shift gate
1 1 Side ass ist
Headlight range control, park
ing system
13 Airbag
14 Rear wiper (allroad)
15 Auxiliary fuse (instrument pan
el)
1
16
Auxiliary fuse terminal 15 (en
gine area)
Fu se pane l @ (b row n)
2 Brake light sensor
5
6
7
Left seat heating with/w ithout
seat venti lation
ESC Horn
Front left door (window regula-
8 tor, central locking, mirror, switch, lighting)
9 Wiper motor
10 ESC Two-door models: rear left win
dow regulator, Fo ur-door mod-
11 els: rear left door (window regu lator, central locking, switch,
lighting)
12 Rain and light sensor
F u se p anel© (red )
3
4 Dynamic steer ing
Amps
5/15
5/7,5 7,5
5
5
5
5
5
5
15
10
40
5
25
15/30
5
15
30
30
25
30
-No . Consumer Amps
6
Windshield washer system,
35
headlight washer system
7
Vehicle e lectrical system control
20
module 1
8
Vehicle electrical system control
30
module 1
9 Sunroof 20
10 Vehicle electrical system control
30
module
1
11 Sun shade motor 20
-
12 Anti-theft alarm warning sys-
tern 5
Right cockpit fuse assignment
Fig.
193 Right cockpit : fuse panel wit h plastic cl ip
No. Consume r
Fuse pane l@ (black )
..
5 Steering column switch module
7
8
Terminal 15 diagnostic connec
tor
Gateway (Databus diagnostic interface)
9 supp lementary heater
Fuse pan el@ (bro wn)
1 CD/DVD player
Amp s
5
5
5
5
5
•
I