2016 AUDI A3 CABRIOLET relay

<( co .... N ,.__
N .... 0 ,.__
> co
Trailer mode Driving with a trailer
General information
Your Audi was designed primarily for passenger
transportation .
If you plan to tow a trailer, please remember that
the additiona l load will affect durability, econo­
my and performance.
T railer tow ing not only p laces more stress on the
vehicle, it a lso calls for more concentration from
the dr iver.
F or this reason, always follow the operating and
driving instructions provided and use common
sense.
Technical requirements
Trailer hitch Use a weight -carrying hitch conforming to the
gross tra iler weig ht. The h itch must be suitab le
for your vehicle and tra iler and must be mo unted
securely on the vehicle's chassis at a technically
sound
location . Use on ly a trailer hitch with a re­
movable ba ll mou nt. Always che ck wit h the t rail­
e r hitch manufac turer to make s ure that you are
usi ng the correct hitch .
Do not u se a bumper hitch .
The hitc h must be installed in such a way t hat it
does not interfere with the impact -absorbing
bumper system . No modifications should be
made to the vehicle exhaust and brake systems .
Fr om time to time, chec k that a ll hitc h mount ing
bo lts rema in securely faste ned.
When you are not towing a trailer,
remove the
tra iler hitch ba ll mount . This prevents the hitch
from ca using damage s hou ld your veh icle be
s truck from beh ind
~ ,&. .
Trailer brakes
If your trailer is equipped with a braking system,
check to be su re that it conforms to all regula­
tions .
Trailer mode
The t rai ler hydra ulic brake sys tem must not be
directly connected to the vehicle's hydra ulic
bra ke system.
Safety chains
Always use safety ch ains be tween your ve hicle
and the trailer.
Trailer lights
T ra ile r ligh ts must meet all regulations . Be sure
to chec k w it h your Aud i dea le r fo r correct wir ing,
swi tches and relays .
Mirrors
If you are unab le to see the traffic behind you us­
i ng the regular outside mir rors, then you
must in­
sta ll extended mirro rs . It i s important that you
always have clear vision to t he rear.
,8. WARNING
Afte r remov ing the tra ile r hi tch , do no t st o re
i t in yo ur vehicle. In ca se of sudden brak ing,
the hitch could fly fo rward and injure you or
your passengers .
Operating instructions
Maximum trailer we ight
A tra iler for your vehicle is lim ited to a typical
class 1 or class 2 trailer.
Trailer load distribution B e sure the load in the tra ile r i s held se curely in
pla ce to p reve nt i t from shifting forward, bac k­
ward or si deways.
Never allow a passenger to ride in a trailer~.&.
in Driving instructions on page 86.
Engine cooling system
Towing a tra iler makes the engine work harder. It
is important that the cooling system's perform ­
ance is up to the additional load . Make sure that
the coo ling syst em has enoug h flu id.
Tire pressure
When towing a trailer, inflate the tires of your
vehicle to the cold tire pressure listed under
"Full ..,.
85

<( co .... N ,.__
N .... 0 ,.__
> co
can be cracked due to ice format ion and can leak
battery acid.
Battery charging (Maximum charging rate of
30 amps/ 14.8 Volt)
When charging at
low voltages (e.g. with a trick­
le charger), the battery cables do not have to be
d isconnected first. The battery caps should
not
be opened when charging a battery.
It is not necessary to remove the battery from
the luggage compartment, and it is also not nec­
essary to disconnect the cables.
Fast charging the battery (charging rate
above 14.8 Volts)
F or technical reasons do not use a battery charg­
er that uses voltage greater than 14.8 Volts to
charge your vehicle's battery.
A WARNING
Charging a battery can be dangerous.
- Always follow the operating instructions
provided by the battery charger manufactur­
er when charging your battery.
-Never charge a frozen battery. It may ex­
plode because of gas trapped in the ice. Al­
low a frozen battery to thaw out first.
- Do not reuse batteries which were frozen.
The battery housing may have cracked and
weakened when the battery froze .
- Charge the battery in a well ventilated area.
Keep away from open flame or electrical
spark. Do not smoke . Hydrogen gas generat­
ed by the battery is exp losive.
- To reduce the danger of explosion, never
connect or disconnect charger cables wh ile
the charger is operat ing.
- Fast charging a battery is dangerous and
should only be attempted by a competent
technician with the proper equipment.
- Battery acid that may spill during charging
should be washed off with a solution of
warm water and baking soda to neutralize
the acid.
Checking and Filling
(D Note
Never use a fast charger as a booster to start
the engine. This will seriously damage sensi­
tive electronic components, such as control units, relays, radio, etc., as well as the battery
charger.
Battery replacement
The new battery must hove the some specifica­
tions and dimensions as the original equipment
battery.
Intelligent energy management in your vehicle is
responsible for distribut ing the e lectrical energy
throughout your vehicle
c;, page 121 . The intelli ­
gent energy management system will keep the
engine battery charged better than vehicles with­
out this system. To make sure the additional
electrical energy is available once again after you
have changed the battery, we recommend that
you install batteries of the same type and manu­
facture only (the same as those installed at the
t ime your vehicle was delivered). Specifications
are listed on the battery housing . Your author­
ized dealer must code the battery in the energy
management system to enable you to use the en­
ergy management functions correctly after re­
plac ing the battery.
The new battery must have the same capacity,
voltage (12-volts), amperage, construction and plug seal ing.
When install ing the battery, make sure the ign i­
t ion and all electr ical consumers are switched
off .
(D Note
Make sure the venti lation hose on the s ide of
the battery is connected, otherwise fumes or battery acid can leak out .
@ For the sake of the environment
Because of the problem of proper d isposal of
a battery, we recommend your authorized
Audi dealer change the battery for you. Bat­
teries contain sulfur ic acid and lead and must
always be disposed of properly in compliance .,.
201

<( co ..... N
" N ..... 0 r--. > 00
-Some of the equipment listed in the follow­
ing tables applies only to certain model ver­
s ions or certain optional equipment .
Interior fuse assignment
Fig. 188 Vehicle interior: fuse assignment
No. Equipment
Fl Engine components
F2 Seat
adjustment
F3 Power top hydraulic pump
F4 MMI control panel, MMI components
FS Gateway
F6 Selector
lever (automatic transmission)
.... ~ N
0
>
"' (0
F7 Climate/heating control, auxiliary heating,
rear w
indow defogger relay
Diagnosis, electromechanical parking
FB brake switch, light switch
, rain/light sen-
sor, inter ior lighting, communications box,
anti-theft alarm system
F9 Steering column switch module
FlO Display
Fll Reversible driver's side safety belt tension
-
ers
F12 MMI area
F13 Damper control module/ service plug
No.
Fl4
FlS
Fl6
F 17
FlB
F19
F20
F23
F 24
F2 5
F2 6
F27
F28
F29
F 31
F32
F 33
F 34
F35
F 36
F37
F38
F39
F40
F41
F42
F4 3
F44
F 47
Fuses and bulbs
Equipment
Climate control system blower
Electronic steering column lock
MMI area
Instrument cluster
Rearview camera
Convince key system control module, tank
system
Tank system
Exterior lighting, heated washer fluid noz -
zles
Panorama sunroof/ power top control
module, power top latch (Cabriolet)
Door/driver's side doors (for examp le pow-
er windows)
Seat heating
Sound-amplifier
Power top control module, electro nics
(Cabriolet)
Inter ior lights
Exterior lighting
Driver assistance systems
Airbag
Button illumination, coils for neck heating
r elay and socket relay, interior sound,
back-up light switch, temperature sensor
Function lighting, diagnosis, headlight
range control system, air quality sensor,
automat ic dimming rearview mirror
R ight cornering light/ right LED-headlight
Left cornering light/ left LED-headlight
High-voltage battery
Door/front passenger's side doors (for ex-
ample, power windows)
Sockets
Reversible front passenger's side safety
belt tensioners
Central locking components, windshield
washer system
Headlights, lighting
all wheel drive Rear w indow wiper
241

Fuses and bulbs
No . Equipment
F48 Exterior sound actuator
F49 Starter, clutch sensor, headlight relay coil,
high-voltage
battery
FS3 Rear window defogger
The power seats* are protected via
circuit break­
ers
that automatically switch on after a few sec­
onds after the overload has been reduced.
(D Tips
Note that the following table was accurate at
the time of printing and is subject to change.
Left engine compartment fuse assignment
Fig . 189 Engine compartment: fuse assignment
No. Equipment
Fl ESC control module
F2 ESC control module
F3 Engine control module (gaso line/diesel)
Engine cooling, engine components, auxili-
F4 ary heater coil relay (1+2), secondary air injection pump relay
FS Engine components,
tank system
F6 Brake light sensor
F7 Engine components, water
pumps
242
No. Equipment
F8 Oxygen sensor
F9 Engine
components, exhaust door, glow
time control module, SU LEV valve
FlO Fuel injectors, fuel control module
Fll Auxiliary heater heat ing element 2
F12 Auxiliary heater heating element 3
F13 Automatic transmiss ion control module
FlS Horn
F16 Ignition coil/ power electronics
F17 ESC control module, engine control mod-
ule
F18 Terminal 30 (reference voltage)
F19 Windshie ld w ipers
F20 Horn
F22 Terminal SO diagnosis
F23 Starter
F24 Auxiliary heater heating element
1, brake
booster
F31 Vacuum pump/ water pump
F32 LED headlights
F33 Brake booster reservoir
F34 Brake booster control
F3S Relay
@ Tips
Note that the following tab le was accurate at
the time of printin g and is subject to change.
Bulbs
Replacing light bulbs
For your safety, we recommend that you have
your authorized Audi dealer replace burned out bulbs for you.
It i s becom ing increasingly more and more diffi­
cult to replace vehicle light bulbs since in many
cases, other parts of the car must first be re­
moved before you are ab le to get to the bulb.
This applies especially to the light bulbs in the
front of your car which you can only reach
through the engine compartment .

Emergency situations
Emergency situations
General
This chapter is intended for trained emergency crews and working personnel who have the nec­
essary tools and equipment to perform these
operations.
Starting by pushing or
towing
CD Note
Vehicles with an automatic transmission can­
not be started by pushing or towing.
Starting with jumper
cables
If necessary, the engine con be started by con­
necting it to the battery of another vehicle .
If the engine should fail to start because of a dis­
charged or weak battery, the battery can be con­
nected to the battery of
another vehicle, using a
pair of jumper cables to start the engine.
Jumper cables
Use only jumper cables of sufficiently large cross
section
to carry the starter current safely. Refer
to the manufacturer's specifications.
Use only jumper cables with
insulated terminal
clamps which are distinctly marked :
plus(+) cable in most cases colored red
minus(-) cable
in most cases colored black .
A WARNING
Batteries contain electricity, acid, and gas.
Any of these can cause very serious or fatal in­
jury. Follow the instructions below for safe hand Ling of your vehicle's battery .
-Always shield your eyes and avoid leaning
over the battery whenever possible.
-A discharged battery can freeze at tempera­
tures just below 32 °F (0 °C). Before con­
necting a jumper cable, you must thaw the
244
frozen battery completely, otherwise it could explode .
- Do not allow battery acid to contact eyes or
skin. Flush any contacted area with water immediately.
- Improper use of a booster battery to start a
vehicle may cause an explosion.
- Vehicle batteries generate explosive gases.
Keep sparks, flame and lighted cigarettes
away from batteries.
- Do not try to jump start any vehicle with a
low acid level in the battery .
- The voltage of the booster battery must also
have a 12-volt rating. The capacity (Ah) of
the booster battery should not be lower
than that of the discharged battery. Use of
batteries of different voltage or substantial­
ly different "Ah" rating may cause an explo­
sion and personal injury .
- Never charge a frozen battery. Gas trapped in the ice may cause an explosion .
- Never charge or use a battery that has been
frozen . The battery case may have be weak­
ened .
- Use of batteries of different voltage or sub­ stantially different capacity (Ah) rating may
cause an explosion and injury. The capacity
(Ah) of the booster battery should not be
lower than that of the discharged battery.
- Before you check anything in the engine
compartment, always read and heed all
WARNINGS
~page 188.
CD Note
-Applying a higher voltage booster battery
will cause expensive damage to sensitive
electronic components, such as control
units, relays, radio, etc.
- There must be no electrical contact between
the vehicles as otherwise current could al­
ready start to flow as soon as the positive
(+) terminals are connected.
@ Tips
The discharged battery must be properly con-
nected to the vehicle's electrical system. .,..