At the same time, the underside of the vehicle
should be washed as well.
If the engine compartment is cleaned at any
time w ith grease removing solut ions
1>, or if
you have the engine washed, the anti-corro
sion treatment is a lmost always removed as
wel l. It is therefore essential to have a long
lasting corrosion protection reapplied to all
surfaces, seams, joints and components in the
engine compartment .
A WARNING
Be aware: The engine compartment of any
motor vehicle is a potentially hazardous
area.
- Before working in the engine compart
ment, be sure to read the informat io n
<=;>page 233.
- Before reaching into the front plenum
pane l, always remove the ignition key.
O therw ise, the windshield wiper system
cou ld unintentiona lly 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 ign it ion is
off.
- Do not wash, wax or dry the engine w ith
the engine running. Moving or hot parts cou ld injure you .
- Do not clean the underside of the chas sis, fenders, wheel covers, or other hard
to reach parts w ithout protecting your
hands and arms. You may cut yourse lf on
sharp-edged metal parts .
- Always read and heed all WARNINGS and
other information <::;>
page 216.
l) Use o nly the co rr ect clean in g s olu tio ns. Ne ve r use ga s
o line or d ie sel fuel.
Cleaning and protec tion 227
•
•
234 Checking and filling
-Apply the parking brake.
- Move selector lever of automatic trans- mission to P (Park).
- 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: -
First, fully apply the parking brake,
move selector lever of automatic trans
mission to P (Park).
- 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
c:> &, .
&_ 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 will 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 vehicle flu
ids, have your vehicle inspected by an au
thorized Audi dealer.
24 2 Ch ecking and filling
-If you drain the coolant, it must be
caught and safely stored in a p roper
conta iner clearly marked "poison".
(D Note
- Coolant pollutes the env ironment and
could cause an engine fire . Excess coo l-
ant will be forced out through the pres
sure relief valve 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 240 must be re
stored as soon as possible .
@ For the sake of the environment
Drained coolant should not be reused. Al
ways dispose of used coolant while observ ing all environmental regulations.
Radiator fan
The radiator fan switches on automatically by
itself
The radiator fan is driven by the engine via the
V-be lt . The viscous clutch regulates the speed
of the fan accord ing to t he temperature of the
coolant.
An auxiliary electric radiator fan* switches on
a nd off depending on coolant temperature
and other ve hicle operating conditions.
After you switch the engine off, the auxiliary
fan can cont inue running for up to 10 minutes
- even with the ignition off. It can even switch
on again later by itself¢&. , if
- the temperature of the engine coolant rises
due to the heat build-up from the engine in
the engine compartment, or
- the engine compartment heats up because
the veh icle is parked in intense sunlight.
_&. WARNING
- To reduce the r isk of personal injury nev
er to uch the radiator fa n. -
The a uxiliary electric fan is temperat ure
controlled and can switch on suddenly
even when the engine is not running.
- The auxiliary radiator fan switches on a u
tomatically when the engine coolant reaches a certai n temperature and will
continue to ru n until the coolant temper
ature drops.
Brake fluid
Checking brake fluid level
The brake fluid level can be checked with a
quick glance.
F ig. 2 00 Engine compart men t: cover on t he brake fluid
reservoir
Befo re you check anyth ing in the engine com
partment,
alway s read and he ed all WARN
INGS c::> ,&. in Working in the engine compart
ment on page 233.
.,. Read the brake fluid level from the b rake
fluid reservoir
c::> fig. 200, c::> page 235,
fig. 196.
The brake fl uid level m ust be be
tween the "MIN" and "MAX" markings.
T he bra ke fluid reservo ir is located at the rear
part ition o f the e ngine compartment on the
left s ide
c::> page 235.
The fluid level may drop slightly afte r some
t ime due to the a utomatic adjustment of the
brake pads. This is not cause for a larm .
If the brake fl uid level falls
considerably be
low the
"MIN" mar k, the brake war ning/ indi
cator light ( U.S. models:
1111 , Canadian
models :. will come on
c::> page 18 and
c::>page 29. Do not con tinue to operate the ve-
hicle . The comp lete brake system should be ..,.
I
I
I
-No. Consumer
6
Headlights range control sys-
tern/Co rnering light
7 Headligh t (corner ing l ight)
Control modules (electrome-
8
chanical parking brake, shock
absorber, quattro Sport, trailer
hitch), DCDC converter
9 Adaptive cruise contro
l or high
voltage battery (hybrid drive)
12 Headlight range contro
l, park
ing system
13 Airbag
14 Rear wiper
15 Auxiliary fuse (ins
trument pan
el)
Auxilia ry fuse terminal 15 (en-
16 gine area)
Fuse panel
@ (brown )
1 E lectric exhaust door
2
3
4
5
6
7 Brake light sensor or brake ped
al movement sensor (hybrid
drive)
Fuel pump
Brake booster (hybrid drive)
Left seat heating with/without
seat venti
lation
ESC
Horn
Left fron t door (window regula -
8 tor, central locking, mirror,
sw itch, lighting)
-9 Wiper motor
10 ESC
Left rear door (window regula
l l tor, sw itch, light ing)
12 Rain and light sensor
Fuse panel © (red)
3 Lumbar support
4 Dynam ic ste ering
5 Climatized cupholder
-Amps
5/ 7,5
7,5
5
5/7,5
5
5
5
15
10
40
5/10
5
25
25
1 5/30
5
15
30
30
2 5
30
5
10
35 10
-
Fu se s and bulb s 281
No. Consumer
6 W
indshield washer system,
headlamp washer system 35
7
Vehicle electrical system control
module 1 20
8
Vehicle electrical system control
module 1 30
9 Panorama su
nroof
10 Vehicle elec
trical system control
30
mod ule 1
11 Sun shade (panorama sunroof)
20
12 Anti-theft alarm warning sys-
tern 5
Right cockpit fuse assignment
Fi g. 22 5 Right cockp it : fuse panel wit h plast ic cl ip
No. Consumer Amps
Fuse panel @ (black )
5 Steering column switch module 5
7 Te
rm inal 15 d iagnost ic connec-
tor
5
8 Gateway (Databus diagnostic in-5 terface)
-..
9 Supp
lementary heater 5
Fuse panel @ (brown)
1 CD /D V D p layer 5