exhaust AUDI A4 2013 User Guide

The location of the coolant expansion tank
can be seen in the engine compartment illus­
tration
q page 221 .
To obtain an accurate read ing , the eng ine
must be switched off .
The expa nsion tank in you r vehicle is equipped
with an elec tric coolant level sensor.
When the coolant level is too low, the warning
light in the Auto-Check System
q page 18 wi ll
b lin k until you add coo lant and the level has
been restored to norma l. Even t hough the re is
an e lec tric coolant level sensor, we s till rec ­
ommend you check the coolant leve l from
time to time .
Coolant loss
Coolant loss may indi cate a leak in the coo ling
sys tem. In the event of coolant loss, the cool­
ing system should be inspected immedia tely
by your authorized A udi dealer. It is not
enough merely to add coolant.
I n a
s ealed system, losses can occur only if
the boiling point of the coolant is exceeded as
a result of overheating.
A WARNING
The cooling system is unde r press ure and
can get ve ry hot. Reduce the risk of sca ld­
ing from hot coolant by following these
steps.
- Turn off the engine and allow it to coo l
down.
- Protect yo ur face, hands and arms from
escaping fluid and steam by covering the
cap with a large, thick rag.
- Turn the cap slowly and very carefu lly in
a counter-clockwise direction wh ile ap­
plying light, downward pressure on the
t op of the cap .
- To avoid being bu rned, do not spill ant i­
freeze or coo lant on the exhaust system
o r hot eng ine parts . Unde r certai n condi­
t ions, the ethy lene g lycol in engine cool­
an t ca n catc h fire.
Checkin g and fillin g 22 7
@ Note
Do not ad d any type of radiator leak sea l­
ant to your ve hicle's engine coolant. Add ­
i ng radiator repa ir flui d may adverse ly af­
fect the funct ion and performance of your
cooling system and could result in damage not cove red by your New Vehicle l imi ted
Warranty .
Adding coolant
Be very careful when adding engine coolant.
Before you check anyth ing in the eng ine com ­
partment,
always read and heed all WARN­
INGS q & in Working in the engine compart ­
ment on page 219 .
.,. Turn off the engine.
.,. let the engi ne cool down.
.,. Place a thick rag over the coolant expansion
tank
q page 226, fig . 187 and carefully turn
the cap counter-clockwise
~ &_ .
.,. Add coo la nt.
.,. Twist the cap o n aga in
tightly.
Rep lacement engine coo lant must confo rm to
exact specificat ions ~
page 226, Coolant. We
recommend using on ly coo lant additive G 12+
+ , G 13 or in an eme rgency G12+. Do
not use a
different additive. In an emergency use pla in
water until you can get the correct additive
and can restore the correct ratio . This sho uld
be done as soon as possible.
If you have los t a cons iderab le amount o f
coolant , then you sho uld add cold antifreeze
and co ld water on ly when the engine is cold.
A lw ays use
new engine coo lant w hen refilling.
Do not f ill coo lant above t he "MAX" mark. Ex­
cess coola nt w ill be fo rced o ut through t he
pressure relief valve in the cap when the en­
gine becomes hot.
A WARNING
- The cooling system is under pressure and
can get very hot. Reduce the risk of ..,.
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228 Check ing and filling
scalding from hot coolant by following
these steps .
- Turn off the eng ine and allow 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 press ure on
the top of the cap .
- To avo id being burned, do not spi ll 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 re lief 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
c::> page 226 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
T he radiator fan is driven by the engine via the
V-be lt . The viscous clutch regulates the speed
of the fan accord ing to the temperature of the
coolant. An a
uxiliary electric radiator fan* switches on
and off depend ing 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 ignit ion 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 injury 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 au­
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 . 1 88 Engin e compart men t: Cover on the b rak e flu­
i d reservo ir
Before you check a nyth ing in the engine com­
partment,
always read and hee d all WARN ­
INGS c::> .&. in Working in the engine compart-
ment on page 219 . .,..

266 Fuses and bulbs
No.
5 Sound actuator/exhaust
sound tuning
6 Headlight
range control sys-
tern/cornering light
7 Headlight (cornering light)
Control modules (electro-
mechanical parking brake,
8 shock absorber, quattro
I
sport, trailer hitch), DCDC
converter
9 Adaptive cruise control
10 Shift gate
11 Side assist
12 Headlight range control,
parking system
13 Airbag
14 Rear wiper (allroad)
15 Auxiliary fuse (instrument
panel)
16 Auxiliary fuse
terminal 15
(engine area)
Fuse panel @ (brown)
2 Brake light sensor
3 Fuel pump
4
5 Left seat heating with/with-
out seat ventilation
6 E5C
7 Horn
-Front left door (window reg·
8 ulator, central locking, mir-
ror, switch, lighting)
9 Wiper motor
10 ESC
Two-door models: rear left
window regulator, Four-door
11 models: rear left door (win-
dow regulator, central
lock-
ing, switch, lighting)
12 Rain and light sensor
Fuse panel © (red)
3 Lumbar support
Amps
5/15
5/7,5 7,5
5
5
5
5
5
5
15
10
40
5
25
5
15/30
5
15
30
30
25
30
5
10
No. Consumer
4 Dynamic steering
6
7
8
9
Interior lighting (Cabriolet)
Windshield washer system ,
headlight washer system
Vehicle electrical system
control module 1
Vehicle electrical system
control module 1 Left rear window regulator
motor (Cabriolet)/sunroof
10 Vehicle electrical system
control module 1
11 Right rear window regulator
(Cabriolet)/sun shade motor
12 Anti-theft
alarm warning
system
Right cockpit fuse assignment Amps
35
5
35
20
30
7,5/20
30
7,5/20
5
Fig. 211 R ight cockpi t: fuse pane l wit h plastic cl ip
No. Consumer Amps
Fuse panel @ (black)
5 Steering column switch
5
module
7 Terminal 15 diagnostic
con-
nector 5
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2 76 General information
designated seating position) and luggage
weight ¢.&, .
Gross Axle Weight Rating
The Gross Axle Weight Rating is the maximum
lo ad that can be applied at each axle of the
vehicle ¢Lr!, .
Vehicle capacity weight
The vehicle capac ity we ight (max. load) is list­
ed on the driver's side 8-p illar.
Roof weight
The maximum permissible roof weight is
198 lbs. (90 kg). The roof weight is made up
of the weight of the roof rack system and the
weight of the object be ing transported
¢ page 68, Loading the roof rack .
.&_ WARNING
- T he actual Gross Axle Weight Rating at
the front and rear axles should not ex­
ceed the permissible weights, and their
combination must not exceed the Gross
Vehicle Weight Rating .
- Exceeding permissib le weight ratings can
result in vehicle damage, accidents and
persona l injury.
(D Note
- The vehicle capacity weight figures apply
when the load is distributed evenly in the
vehicle (passengers and luggage). When
transporting a heavy load in the luggage
compartment, carry the load as near to
the rear axle as possible so that the vehi­
cle's handling is not impaired .
- Do not exceed the maximum permissible
axle loads or the maximum gross vehicle
weight . Always remember that the vehi­
cle's handling will be affected by the ex­
tra load . Therefore, adjust your speed ac­
cordingly.
- Always observe loca l regu lations .
.
Dimensions
The specifications refer to the basic model.
Differences may occur depending on the mod­
el type and options ordered, for example, tire
sizes.
~ Note
When driving up steep ramps, on rough
roads, over curbs, etc. it is important to re­
member that some parts of your vehicle,
such as spo ilers or exhaust system compo­
nents, may be close to the ground . Be
careful not to damage them .

_______________________________ ___:I~n ~d ~e:.::x 287
Changin g engine oi l
Chass is 225
U ndercoat ing ............ .... .. .. . 208
Checking
Eng ine coolant level ........ . .. .. .. .
226
Checking tire pressure .............. . 241
Ch ild restraints
D anger of usin g child restraints in the
front seat . . . . . . . . . . . . . . . . . . . . . . . .
146
Where can I get additional information
about child restraints and their use? ..
184
Child restraint system anchors . .. ... .. 180
Ch ild safety .. ............. .... .. ... 166
Convertible locking retractor . . . . . . . . . 176
Important safety instructions for using
ch ild safety seats .... ... .. .. .. .. .. .
169
Impo rtant th ings to know when driv in g
wi th children ............ .... .. ...
166
Insta lling a chi ld res traint using the
L A TCH system ............ .. .. .. .. .
18 1
Mounting and releasing the ancho rage
hook .... .. .. ............. .. .. ...
18 1
Tether anchors . . . . . . . . . . . . . . . . . . . . 182
Tether straps . . . . . . . . . . . . . . . . . . . . . 182
Child safety loc ks
Power windows .......... .. .. .. ....
42
Rear doors ... ........... .. .. ...... 42
Child safety seats .......... .... .. .. . 172
Booster seats ................ .. .. . 17 4
Convertible child seats .... .. .. .. .. .
173
Convertible locking retractor .. .. .. .. . 176
Danger of using child restra ints in the
front seat . . . . . . . . . . . . . . . . . . . . . . . .
146
How do I properly install a child safety
seat in my vehicle? ........ .. .. .. .. .
169
Infant seats . . . . . . . . . . . . . . . . . . . . . . 172
Installing ............ ...... .... .. 176
LATC H system ......... ...... .... .. 18 1
Saf ety inst ruc tions ........ .. .. .. .. . 169
Unused safety belts on the rear seat 17 1
Ch ild seats
L ower ancho rages ........... .. ....
18 1
Cigarette lighter . . . . . . . . . . . . . . . . . . . . . 63
Cleaning
Alcantara® (syn thetic suede) .. .. .. .. .
212
En gine compartment .............. . 213
Exhaust tail pipes ............... .. . 209
Fabr ics and fabric coverings ......... 209
Instrument panel ... . .......... .. .. 210
Interior ... .. .. .. .. . .. .......... .. 209
Leather . . . . . . . . . . . . . . . . . . . . . . . . . . 211
Matte finish paint ................. 204
MMI display/controls ... ......... ... 209
Plastic and vinyl .. .. . .. .. .. ... ... .. 206
Plastic parts ..... .. .. .. .. ......... 210
Safety belts ... .. .. . .............. 21 2
Trim strips .. .. .. .... ........... .. 206
Cleaning and protection . .. .......... . 202
Climate controls ..... . .. .......... .. . 76
Climate control system
Au tom atic recir culat ion ......... .. .. .
79
Supplementary heater ............... 79
synchronizing . . . . . . . . . . . . . . . . . . . . . . 79
Clock .. ... ... .. .... .. .. ...... ... .. . 12
Closing
Power w indows ................... .
42
Sliding/tilting sunroof ............... 44
Sunshade ....... .. . .. ......... ... . 44
Closing/opening
at the lock cylinder .. ........... .... .
38
by remote control ............. .. .. . 35
with the centra l locking sw itch ........
36
with the conven ience key . .......... .. 36
Cold tire inflation pressure .......... .. 238
Coming home ... .. .... ........... .. . 48
Compact spare tire .................. 256
also refer to Spare tire ....... ... .. .. 256
Compartments . . . . . . . . . . . . . . . . . . . . . . 66
Compass in the mirror ... ......... ... . 56
Compliance . . . . . . . . . . . . . . . . . . . . . . . . 283
Consumer Information . . . . . . . . . . 135, 280
Contacting NHTSA .... .. ......... ... 135
Convenience key
Ind icator lights .. ................. .
84
Starting engine (START ENGINE STOP
button) . .. .. .. .. .. . .. .. ..... ..... .
83
Stopping the engine (START ENGINE
STOP button) . . . . . . . . . . . . . . . . . . . . . .
84
Switching on ignition ............... . 83
un locking/loc king ............. ..... 36
Convenience opening/clos ing .......... 43
Convertible child safety seats ......... 173
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