2016 AUDI A4 radiator

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-To avoid being burned, do not spill anti­
freeze or coolant on the exhaust system or hot engine parts. Under certain condi­
tions, the ethylene glycol in engine cool­ ant can catch fire.
- Antifreeze is poisonous. Always store anti­
freeze in its original container and well out
of the reach of children.
- If you drain the coolant, it must be caught
and safely stored in a proper container
clearly marked "poison".
(D Note
-Do not add coolant if the expansion tank is
empty . Air could enter the cooling system
and damage the engine. If this is the case,
do not continue driving. Seek professional
assistance.
- Coolant pollutes the environment and could
cause an engine fire. Excess coolant will be
forced out through the pressure relief valve
in the cap when the engine becomes hot.
- If, in an emergency, only water can be add­
ed, the correct ratio between water and an­
tifreeze
c::> page 208 must be restored as
soon as possible.
@) For the sake of the environment
Drained coolant should not be reused. Always
dispose of used coolant while observing all
environmental regulations.
Radiator fan
The radiator fan switches on automatically by it­
self.
The radiator fan is driven by the engine via the V­
belt . The viscous clutch regulates the speed of
the fan according to the temperature of the cool­
ant.
An auxiliary electric radiator fan* switches on and
off depending on coolant temperature and other
vehicle operating conditions.
After you switch the engine off, the auxiliary fan
can continue running for up to 10 minutes -even
Checking and Filling
with the ignition off. It can even switch on again
later by itself
c::> & , if
- the temperature of the engine coolant rises due
to the heat build-up from the engine in the en­
gine compartment, or
- the engine compartment heats up because the
vehicle is parked in intense sunlight.
A WARNING
-To reduce the risk of personal injury never
touch the radiator fan.
- The auxiliary electric fan is temperature
controlled and can switch on suddenly even
when the engine is not running.
- The auxiliary radiator fan switches on auto­
matically when the engine coolant reaches a
certain temperature and will continue to run
until the coolant temperature drops.
Brake fluid
Checking brake fluid level
The broke fluid level con be checked with o quick
glance .
Fig. 185 En gi ne compartmen t: Cover on the b rake fl uid
reservoir
Before you check anything in the engine compart ­
ment,
always read and heed all WARNINGS
c::> _.& in Working in the engine comportment on
page 203.
.,. Read the brake fluid level from the brake fluid
reservoir
c::> fig. 185, c::> page 205, fig . 181 . The
brake fluid level must be between the "MIN"
and "MAX" markings.
211

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0 ::..:: co ..... ..... today's automobiles, have steadily reduced the
scope of maintenance and repairs which can be
carried out by vehicle owners.
Also, safety and
environmental
concerns place very strict limits
on the nature of repairs and adjustments to en­
gine and transmission parts which an owner can perform .
Maintenance, adjustments and repairs usually re­
quire special tools, testing devices and other
equipment available to specially trained work ­
shop personnel in order to assure proper per­
formance, reliability and safety of the vehicle and its many systems.
Improper maintenance, adjustments and repairs
can impair the operation and reliability of your
vehicle and even void your vehicle warranty .
Therefore, proof of servicing in accordance with
the maintenance schedule may be a condition for upholding a possible warranty claim made within
the warranty period.
Above all , operational safety can be adversely af­
fected, creating unnecessary risks for you and
your passengers.
If in doubt about any servicing, have it done by
your authorized Audi dealer or any properly equipped and qualified workshop. We strongly urge you to give your authorized Audi dealer the
opportunity to perform all scheduled mainte­ nance and necessary repairs. Your dealer has the
facilities, original parts and trained specialists to keep your vehicle running properly .
Performing limited maintenance yourself
The following pages describe a limited number of
procedures which can be performed on your vehi­
cle with ordinary tools, should the need arise and
trained personnel be unavailable. Before per­
forming any of these procedures, always thor­
oughly read all of the applicab le text and careful­
ly follow the instructions given . Always rigorously
observe the
WARNINGS provided .
Before you check anything in the engine com­
partment, always read and heed all WARNINGS
c::> .&. and c::> .&. in Working in the engine compart­
ment on page 203 .
Consumer information
A WARNING
-Serious personal injury may occur as a result
of improperly performed maintenance, ad­
justments or repairs .
- Always be extremely careful when working
on the vehicle. Always follow commonly ac­
cepted safety practices and general com­
mon sense. Never risk personal injury.
- Do not attempt any of the maintenance,
checks or repairs described on the following pages if you are not fully familiar with these
or other procedures with respect to the ve­ hicle, or are uncertain how to proceed.
- Do not do any work without the proper tools
and equipment. Have the necessary work
done by your authorized Audi dealer or any
properly equipped and qualified workshop.
- The engine compartment of any motor vehi­
cle is a potentially hazardous area. Never
reach into the area around or touch the radi­
ator fan. It is temperature controlled and
can switch on suddenly - even when the en­
gine is off and the ignition key has been re­
moved. The radiator fan switches on auto­
matically when the coolant reaches a certain
temperature and will continue to run until
the coolant temperature drops.
- Always remove the ignition key before any­
one gets under the vehicle.
-Always support your vehicle with safety
stands if it is necessary to work underneath
the vehicle. The jack supplied with the vehi­
cle is not adequate for this purpose and
could collapse causing serious personal in­
jury.
- If you must work underneath the vehicle
with the wheels on the ground, always make
sure the vehicle is on level ground, that the
wheels are always securely blocked and that
the engine cannot be started.
- Always make sure the transmission selector
lever (automatic transmission) is in "P"
(Park position) or Neutral (manual transmis-
sion) and the park brake is firmly applied . ..,.
259

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0 ::..:: co ..... ..... Determin ing correct load limit . . . . . . . . . . 23 1
Dig ita l clock . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Dig ita l compass . . . . . . . . . . . . . . . . . . . . . . . 57
Di mensions . . . . . . . . . . . . . . . . . . . . . . . . . . 256
Dimming the rearview mirror . . . . . . . . . . . . 52
Doors Chil d safety loc ks . . . . . . . . . . . . . . . . . . . . . 41
emergency locking . . . . . . . . . . . . . . . . . . . . 36
Dr iver information system . . . . . . . . . . . . . . . 23
E nhanced s hift ind icator . . . . . . . . . . . . . . . 27
Open door or front lid warning . . . . . . . . . . 23
Outside temperature disp lay. . . . . . . . . . . . 23
Sound system display . . . . . . . . . . . . . . . . . 23
D river seat
refer to Sea ting pos ition . . . . . . . . . . . . . . 122
Dr iving economically . . . . . . . . . . . . . . . . . . 187
Driving offroad . . . . . . . . . . . . . . . . . . . . . . . 188
D riving s afe ly . . . . . . . . . . . . . . . . . . . . . . . . 12 1
Driving through wate r . . . . . . . . . . . . . . . . . 185
Driving time . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Dust filte r
refer to Pollutant filte r (automat ic A/C sys-
tem) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Dynamic steering ............. 111,177,181
E
E85 (Fu el) . . . . . . . . . . . . . . . . . . . . . . . . . . . 199
E ff iciency p rogram . . . . . . . . . . . . . . . . . . . . . 26
Fu el economy messages . . . . . . . . . . . . . . . 28
M emory levels . . . . . . . . . . . . . . . . . . . . . . . 24
Other equipment . . . . . . . . . . . . . . . . . . . . . 27
Shift indicator . . . . . . . . . . . . . . . . . . . . . . . 27
E lect ro-mechan ica l powe r ass ist . . . . . . . . . 18 1
E lect romechan ical park ing brake
E me rgency brak ing . . . . . . . . . . . . . . . . . . . 87
I ndicator ligh t . . . . . . . . . . . . . . . . . . . . . . . 85
Par king . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Re leas ing and closing . . . . . . . . . . . . . . . . . 85
Starting assist . . . . . . . . . . . . . . . . . . . . . . . 86
Starting from rest . . . . . . . . . . . . . . . . . . . . 86
Starting
off w ith a trailer . . . . . . . . . . . . . . . 86
Wa rning/indicator lights . . . . . . . . . . . . . . . 16
E le ctronic differential lock
Wa rning/indicator lights . . . . . . . . . . . . . . . 18
E lect ronic D ifferential Lock . . . . . . . . . . . . . 177
Index
Electron ic differentia l lock (ED L)
War ning/indicator lights . . . . . . . . . . . . . . . 19
El ectron ic immobili zer . . . . . . . . . . . . . . . 12 , 3 7
E lectron ic power control
(EPC) warn ing/ indicator light . . . . . . . . . . . 20
E lectron ic speed limiter . . . . . . . . . . . . . . . . . 29
El ectron ic stabilization control
offroad mode . . . . . . . . . . . . . . . . . . . . . . . 178
Spo rt mode . . . . . . . . . . . . . . . . . . . . . . . . 178
E lectron ic Stab ilization Contro l . . . . . . . . . . 177
E lectronic Stabilization Contro l (ESC)
War ning/ indicato r lights . . . . . . . . . . . . . . . 18
E mergency actuation
D oo rs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Ign it ion key . . . . . . . . . . . . . . . . . . . . . . . . . 3 4
Rear lid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Sliding/ti lting sunroof . . . . . . . . . . . . . . . . . 43
E mergency b raking . . . . . . . . . . . . . . . . . . . . . 87
Emergency flasher . . . . . . . . . . . . . . . . . . . . . 50
Warning/ indicato r lights . . . . . . . . . . . . . . . 22
Emergency key . . . . . . . . . . . . . . . . . . . . . . . . 32
Start ing engine . . . . . . . . . . . . . . . . . . . . . . 82
E mergency ope ration
E mergency braking function (par king b rake) .87
E mergency start ing . . . . . . . . . . . . . . . . . . . 250
Energy management . . . . . . . . . . . . . . . . . . 182
Battery power. . . . . . . . . . . . . . . . . . . . . . . . 16
Driver notif ication . . . . . . . . . . . . . . . . . . . . 16
E ngine
Compartment . . . . . . . . . . . . . . . . . . . . . . . 205
Coo lant . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
Start ing . . . . . . . . . . . . . . . . . . . . . . . . . 80, 83
Start ing with jumper cables . . . . . . . . . . . 250
Stopp ing . . . . . . . . . . . . . . . . . . . . . . . . . 82, 84
Engine compartment . . . . . . . . . . . . . . . . . . 205
Safety instr uctions . . . . . . . . . . . . . . . . . . . 203
Working the engine compartment
203
E ngine coolant
Ind icator light . . . . . . . . . . . . . . . . . . . . . . . 17
E ngine coolant system . . . . . . . . . . . . . . . . . 208
Adding coo lant. .. .. ............... .. 210
Checking cool ant level . . . . . . . . . . . . . . . . 209
C hecking the engine coo lant level . . . . . . . 2 09
Radiator fan . . . . . . . . . . . . . . . . . . . . . . . . 211
E ngine coolant temperat ure
T emperatu re gauge . . . . . . . . . . . . . . . . . . . 10
265

Index
Engine hood Closing . . . . . . . . . . . . . . . . . . . . . . . . . . . .
203
How to release the hood . . . . . . . . . . . . . . 203
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . 205
Adding .. .. .. ............... .... ... 207
Additives . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
Changing . . . . . . . . . . . . . . . . . . . . . . . . . . 208
Check oil level . . . . . . . . . . . . . . . . . . . . . . 207
Consumption . . . . . . . . . . . . . . . . . . . . . . . 207
Indicator light .. .................. 17, 20
Oil consumption . . . . . . . . . . . . . . . . . . . . . 206
Pressure malfunction . . . . . . . . . . . . . . . . . 17
Sensor defective . . . . . . . . . . . . . . . . . . . . . . 20
Specification and viscosity . . . . . . . . . . . . . 205
Engine speed limitation . . . . . . . . . . . . . . . . . 20
Environment
Catalytic converter . . . . . . . . . . . . . . . . . . .
186
Disposing of your vehicle battery . . . . . . . 215
Driving at high speeds . . . . . . . . . . . . . . . . 187
Fuel. .... .. .. .. ............. .... .. . 200
Leaks under your vehicle . . . . . . . . . . . . . . 203
Letting the vehicle stand and warm up . . . 187
Proper disposal of drained brake fluid . . . 212
Proper disposal of drained engine coolant 210
Proper disposal of drained engine o il 207, 208
Recycling used engine oil . . . . . . . . . . . . . 207
Roof rack . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Unleaded fuel . . . . . . . . . . . . . . . . . . . . . . . 198
What should I do with an old battery? 215
E PC
refer to Electronic power control . . . . . . . . 20
Ethyl alcohol (Fuel) . . . . . . . . . . . . . . . . . . . . 199
Event Data Recorder (EDR) . . . . . . . . . . . . . 176
Expansion tank
Exterior lighting
Exterior mirrors 209
48
Adjusting . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
D ' . 1mming ... .. .. ................ ..... 52
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
F
Fan
Radiator
211
Fastening
Booster seats . . . . . . . . . . . . . . . . . . . . . . .
166
Convertible chi ld safety seats . . . . . . . . . . 164
Infant seats . . . . . . . . . . . . . . . . . . . . . . . . 163
266
Fastening eyes
refer to Tie-downs . . . . . . . . . . . . . . . . . . . . 72
flexib le fue l . . . . . . . . . . . . . . . . . . . . . . . . . . 199
Floor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Floor mats . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Fog lights/rear fog light(s) . . . . . . . . . . . . . . 48
Fold ing the rear seats . . . . . . . . . . . . . . . . . . . 69
Foot pedals . . . . . . . . . . . . . . . . . . . . . . . . . . 125
For the sake of the environment
Environmentally -friendly driving . . . . . . .
187
Gasoline fumes and the environment . . . . 200
Letting the engine warm up . . . . . . . . . 80, 83
Refueling . . . . . . . . . . . . . . . . . . . . . . . . . . 200
Sav ing fuel by early upshifting . . . . . . . . . . 11
Front airbags
Description . . . . . . . . . . . . . . . . . . . . . . . . .
142
How they work . . . . . . . . . . . . . . . . . . . . . . 146
Frontal collisions and the laws of physics . . 131
Front passenger 's door emergency locking . . 36
Front seats
Adjusting . . . . . . . . . . . . . . . . . . . . . . . . . .
123
Child restraints in the front seat . . . . . . . . 139
Fuel
Additives .. ... ... ... ...... ....... ...
198
Blended gasoline 198
Consumption . . . . . . . . . . . . . . . . . . . . . . . . 24
Fuel gauge . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Gasoline add it ives . . . . . . . . . . . . . . . . . . . 200
Low fue l level symbol . . . . . . . . . . . . . . . . . 20
Octane rating . . . . . . . . . . . . . . . . . . . . . . . 198
Recommendation ... ................. 198
Refuelling . . . . . . . . . . . . . . . . . . . . . . . . . . 200
Reserve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Saving fuel . . . . . . . . . . . . . . . . . . . . . . . . . 187
Tank capacity . . . . . . . . . . . . . . . . . . . . . . . 256
Tank system . . . . . . . . . . . . . . . . . . . . . . . . . 20
Unlocking the fuel filler flap by hand . . . . 202
Fuel economy messages (efficiency program) 28
Fuel filler flap
Unlocking the fuel filler flap by hand . . . .
202
Fuses
A . ss 1gnment . .. .. .. .. .. ..... 246, 247, 248
Replacing . . . . . . . . . . . . . . . . . . . . . . . . . . 246
G
Garage door opener (HomeLink) . . . . . . . . . . 44

Index
Proper occupant seating positions . . . . . . . 122
Proper safety belt posi tion . . . . . . . . . . . . . . 134
Proper seating posit ion
Front passenger . . . . . . . . . . . . . . . . . . . . . 123
Occupa nts . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Rear passengers . . . . . . . . . . . . . . . . . . . . . 124
Protecting . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
P rotective l iner . . . . . . . . . . . . . . . . . . . . . . . . 75
Q
Qua rtz clock . . . . . . . . . . . . . . . . . . . . . . . . . . 12
quattro
refer to all-wheel drive . . . . . . . . . . . . . . . 182
Q uestion
What happens to unbel ted occupants? 13 1
R
Radiator fan . .. .. ............. .... .. . 211
Ra in/light sensor
H eadlig hts . . . . . . . . . . . . . . . . . . . . . . . . . . 48
I ntermittent (w indshield wipers) . . . . . . . . 54
Sensor defective . . . . . . . . . . . . . . . . . . . . . . 2 1
Ra is ing the veh icle . . . . . . . . . . . . . . . . . . . . 254
R eading ligh ts . . . . . . . . . . . . . . . . . . . . . . . . . 51
Rea r doo r su n shade . . . . . . . . . . . . . . . . . 53, 54
Rear fog lights .. .. .. .. .. .. .. .. .. .. .. .. 48
Re ar lid
Autom atic o peration . . . . . . . . . . . . . . . . . . 38
Emergency release . . . . . . . . . . . . . . . . . . . . 40
Escape hand le . . . . . . . . . . . . . . . . . . . . . . . 40
Opening and clos ing . . . . . . . . . . . . . . . . . . 37
Rea r light
D efe ctive . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Rea r parking sys tem . . . . . . . . . . . . . . . . . . . 114
Rea r parking system with rearview camera . 115
Rea r view came ra
Par king mode 1 . . . . . . . . . . . . . . . . . . . . . 1 18
P a rking mode 2 . . . . . . . . . . . . . . . . . . . . . 119
Rea r view m irror . . . . . . . . . . . . . . . . . . . . . . . 52
Rear window heat ing . . . . . . . . . . . . . . . . . . . 78
Re ar window su n sha de . . . . . . . . . . . . . . . . . 54
Rear window washer system . . . . . . . . . . . . . 54
R ecirc ulation mode (automatic climate con -
trol) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Ref uell ing . . . . . . . . . . . . . . . . . . . . . . . . . . . 200
270 Release
lever for hood . . . . . . . . . . . . . . . . . 203
Remote control Gar age door opene r (Home link) . . . . . . . . . 44
Remote control key . . . . . . . . . . . . . . . . . . . . 32
Personaliz ing . . . . . . . . . . . . . . . . . . . . . . . . 32
u nlocking/lock ing . . . . . . . . . . . . . . . . . . . . 34
Remote rear lid release . . . . . . . . . . . . . . . . . 3 7
Repair manuals . . . . . . . . . . . . . . . . . . . . . . . 258
Repairs Airbag system . . . . . . . . . . . . . . . . . . . . . . 151
Replacement key . . . . . . . . . . . . . . . . . . . . . . 32
Replacing Windshie ld w iper b lades . . . . . . . . . . . . . . . 56
Replacing bulbs . . . . . . . . . . . . . . . . . . . . . . 249
Replacing wiper blades . . . . . . . . . . . . . . . . . 56
Reporting Safety Defects . . . . . . . . . . . 128, 129
Reset button . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Ret rac to r . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Revers ible f loor . . . . . . . . . . . . . . . . . . . . . . . . 75
Reversible mat . . . . . . . . . . . . . . . . . . . . . . . . 73
R igh t hand dr ive . . . . . . . . . . . . . . . . . . . . . . . SO
Rims .......... .. .. .. ............. .. 232
Roof rack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Roof load . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Roof weight . . . . . . . . . . . . . . . . . . . . . . . . . 68
s
SA FE 12
Safe d riving habits . . . . . . . . . . . . . . . . . . . . 121
Safelock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
S afety
Airbag system ... .. ... .. .. ..... ... . .
Be lts
.. ... .. .. .. .. .. ... . .. .... ... ..
Cargo 138
130
126
Correct seat ing pos ition . . . . . . . . . . . . . . 122
Pedal area . . . . . . . . . . . . . . . . . . . . . . . . . . 12S
Safety be lt pos ition . . . . . . . . . . . . . . . . . . . 134
Safety be lt heig ht adjustment . . . . . . . . . 135
Safety be lts worn by pregnant women . . . 135
Safety be lt pretens ione r
Se rvice and disposal. .. .. ........... .. 13 7
Safety be lts . . . . . . . . . . . . . . . . . . . . . . 130, 133
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . 195
Danger to passengers who do not wear a
safety be lt . . . . . . . . . . . . . . . . . . . . . . . . . 131
Fastening 133