2013 AUDI A4 SEDAN AUX

Corro sion prot ecti on
The engine compa rtment and transmiss ion
have been corrosion-protect ed at the factory.
Good ant i-corrosion treatment is very impor­
tant , particularly in the winter. If the veh icle
is frequent ly driven on sa lt treated roads , the
enti re engine compartment and plenum panel
should be thoroughly cleaned at the end of
wint er and retreated to pr ev ent sa lt damage .
At the same time, the underside of the vehicle
should be washed as we ll.
If the engine compartment is cleaned at any
time with gr ease r emoving solutions
1l, or if
you have the engine washed, the anti-corro­ sion treatment is a lmost 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
e ngine compartment .
.8, WARNING
Be aware: The engine compa rtment of any
motor vehicle is a po ten tially h azardous
area .
- Before working i n the engine compart ­
ment, be s ure to read the in format ion
Q page 215 .
-Be fore rea ching into the front plenum
pane l, always remove the ignition key .
Otherw ise, the windshield wiper system
cou ld uni ntentiona 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 ig nition is
off .
- Do not wash, wax or dry the engine w ith
the engine running . Moving or hot parts
cou ld inju re you .
- Do not clean the underside of the chas ­
sis, fenders, wheel cove rs, or other hard
l ) Use o nly t he 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 209
to reach parts without protecting your
hands and arms . You may cut yourself on
sharp-edged metal parts.
- Always read and heed a ll WARNINGS and
other information
Q page 199.
•
•

216 Checking and filling
-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: -
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~&, .
.&_ 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.

224 Checking and filling
scalding from hot coolant by following
these steps.
- Turn off the eng ine and a llow it to cool
down.
- Protect your face, hands and arms from escaping flu id and steam by cover ing
the cap with a large, thick rag.
- Turn the cap slowly and very carefully
i n a counter-clockwise direction while
apply ing l ight, downwa rd p ress ure on
the top of the cap .
- To avo id being burned, do not sp ill an­
tifreeze or coolant on the exhaust sys­
tem or hot engine parts . Under certain
conditions, the ethylene glyco l in en­
gine coolant can catch f ire .
- Antifreeze is poisonous . Always store an­
tifreeze in its or iginal container and we ll
out of the reach of children .
- If you drain the coolant, it must be
caught and safely stored in a proper con­
tainer clear ly marked "poison".
@ Note
- Coolant po llutes 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, on ly water can be
added, the correct ratio between water
and antifreeze
c::> page 222 must be re­
stored as soon as possible .
@ For the sake of the environment
Drained coolant should not be re used. Al­
ways dispose of used coolant while observ­
ing all environmental regulat ions.
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 according to the temperature of the
coolant. An a
uxiliary electric radiator fan* switches on
and off depending on coolant temperature
and other vehicle operat ing condit ions .
After yo u sw itch the engine off, the aux iliary
f an can continue running for up to 10 minutes
- eve n wit h the ignition off. It can even switc h
on again later by itself
c::> &. , if
- t he tempe rature of the engine coo lant rises
due to the heat build -up from the engine in
the engine compartment, or
- the engine compa rtment heats up because
the vehicle is parked in i ntense sunlight.
_& WARNING
- To reduce the risk of personal in jury nev­
er touch the radiator fan.
- The auxiliary electric fan is temperat ure
controlled and can sw itch on suddenly
even when the engine is not running.
- The a uxiliary radiator fan sw itches on a u­
tomatically when the engine coo lant
reaches a certai n temperature and will
continue to run 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 . 17 1 Eng ine compartment: Cover on the brake flu­
i d reservo ir
Before you check a nyth ing in the engine com­
partment,
always read and h eed all WARN ­
INGS c::> .&. in Working in the engine compart-
ment on page 215. .,..

Fuses and bulbs 259
-No. No. Consumer Amps
5 Sound
actuato r/exhaust sound
5/15
tuning 6
Windshield washer system,
35
headlight washer system
.
6 Headlight range control sys-
5/7,5
tern/cornering light 7 Vehicle electrical system control
20
module 1
7 Headlight (cornering light) 7,5
Control modules (electrome-
8
Vehicle electrical system control
30
module 1
'
8
chanical parking brake, shock
5
absorber, quattro sport, trailer
hitch), DCDC converter 9 Sunroof 20
10 Vehicle electrical system control
30
module
1
9 Adaptive cruise control 5
11 Sun shade motor 20
10 Shift gate
5
11 Side assist 5 12 Anti-theft alarm
warning sys-
5
tern
I 12 Headlight range control, park-
5
ing system
Right cockpit fuse assignment
13 Airbag 5
14 Rear wiper (allroad) 15
15 Auxiliary fuse (instrument pan-
10
el)
I 16 Auxiliary fuse terminal 15 (en-
40
gine area)
Fuse panel @ (brown)
2 Brake light sensor 5
3 Fuel pump
25
4
5 Left seat
heating with/without
15/30
seat ventilation
6
7 Horn Front left door (window regula-
8 tor, central locking, mirror, 30
switch, lighting)
Fig. 191 Right cockpit : fuse panel with plastic cl ip
9 Wiper motor 30
10 ESC 25
No. Consumer Amps
Two-door models: rear left win-Fuse panel @ (black)
dow regulator, Four-door mod- 5 Steering column switch module 5
11
els:
rear left door (window regu-
30
lator, central locking, switch, 7 Terminal 15 diagnostic connec-
5
tor
lighting)
12 Rain and light sensor 5
8
Gateway (Databus diagnostic
5
interface)
-..
Fuse panel © (red) 9 supplementary heater 5
3
Fuse panel @ (brown)
4 Dynamic steering
1 CD/DVD player 5