2015 AUDI A5 relay

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Trailer mode Driving with a trailer
General information
Your Audi was designed primarily for passenger
transportation.
If you plan to tow a tra iler, p lease remember that
the additiona l load will affect durability, econo­
my and performance .
T railer towing not on ly places more stress on the
vehicle, it also calls for more concentrat ion from
the driver .
F or this reason, a lways fo llow the operating and
d riving instructions provided and use common
sense.
Technical requirements
Traile r hitch
Use a weight-carrying hitch conforming to the
gross trailer weight. The hitch must be suitable
for your vehicle and trailer and must be mounted
securely on the veh icle 's chassis at a technically
sound
location . Use on ly a tra iler hitc h with a re­
movable ba ll mou nt. Always chec k w ith the t ra il­
e r hitch m anu fac tur er to make sure that you a re
using the co rrec t hitch.
Do not use a bumper hitch .
The hitch must be installed in such a way that it
does not in terfere with the impact-absorbi ng
bumper system. No mod ificat ions should b e
mad e to the vehicle exhaust and brake systems .
Fr om time to t ime, c hec k t hat a ll h itch mou nti ng
bo lts remain sec urely fastened .
When you are no t tow ing a trailer,
remove the
trai ler hitch ball mount . Th is prevents the hitc h
fr om caus ing damage should you r vehicle be
s truck from behind¢,&. .
Trailer brakes
If yo ur tra iler is equipped w it h a braking system,
check to be s ure that it conforms to all regu la­
tions.
Trailer mode
T he trailer hyd raulic brake system must not be di ­
rect ly connected to the ve hicle's hydraulic b rake
system ¢.&. .
Safety chains
Alw ays use s afety ch ains be tween your ve hicle
and t he tra ile r.
Trailer lights
Tra ile r li ghts must meet all regulations. Be sure
to check w it h your author ized Audi deal er for cor­
r e ct w iring, sw itches, and relays.
Mirrors
If you are unable to see the traffic behind you us­
i ng the regular o uts ide mirrors, then you
must in ­
sta ll extended mirrors .
It is importa nt that you
always have clea r vision to the rea r.
_&. WARNING
- I f a trai ler has elec trical brake s please note
th at these b ra kes are not acti va ted by the
factory -fitted contro l unit -ris k of acci dent!
- After removing the t railer hi tch, do n ot store
it in your vehicle . In case o f su dden braking,
the hi tch could fly forward and injure you or
your passe ngers.
Operating instructions
Maximum traile r weight
A trai ler for you r vehicle is limited to a typical
class 1 or class 2 trailer.
Trailer load distribution
B e sure the load in the t ra iler i s held secure ly in
pla ce to prevent it from sh ifting forw ard , back ­
war d or sideways .
Never allow a passenger to ride in a trailer¢.&.
in Driving in struc tion s on page 182.
Engine cooling system
Towing a trailer makes the engine work harder . It
is important that the cooling system's pe rform­
ance is up to the additional load . Ma ke s ure that
t h e coo ling system has enoug h fluid.
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~ Open the engine hood¢ page 191 .
~ Open the cover on the positive pole ~ fig. 166.
~ Connect the charger connectors accord ing to
the instructions to the
jump sta rt bolts . (Bolts
under the cover= "posit ive", Bo lt s with hex
head = "negat ive") .
~ Only now plug the ma ins lead for the charg ing
equipment into the wall outlet and turn it o n
~& -
~ Mak e sure the charging rate i s not o ver
30 amp s/14 .8 Volt .
~ When the battery is fully charged: Turn the
charging equipment
off and remov e the mains
l ead from the wall outlet.
~ Now remove the clamps for the charging equip-
ment.
~ Close the cover on the posit ive pole .
~ Close the hood 9 page 191.
A discharged battery can freeze at temperatures
of only 32 °F (0 °C). Allow a frozen battery to
thaw comp letely before attempting to charge it
9 & . However, we recommend not using a
thawed batte ry agai n because the batte ry casing
can be cracked due to ice forma tion a nd ca n leak
battery a cid.
Battery charging (Maximum charging rate of
30 amps /14.8 Volt )
When charging at low voltages (e.g. w ith a trickle
c harger ),
the battery cab les do not have to be
d isconnected first. The batte ry caps sho uld
not
be opened when charging a battery.
It is not necess ary to remove the ba tte ry from
t he luggage compa rtment.
Fast charging the battery (charging rate
above 14.8 Volts)
F or technica l reasons do no t use a ba ttery charg­
e r that uses voltage grea ter than 14.8 Vol ts to
charge your vehicle's battery .
A WARNING
Charging a battery can be dangerous.
- Always fo llow the operating instructions
provide d by the batte ry charge r manufactur ­
er when c harging your battery.
Checking and Fillin g
-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 wh ich were frozen.
The battery housing may have cracked and
weakened whe n the battery froze.
- Charge the battery in a well ventilated area.
K eep away from open flame or electrical
spark. Do not smoke. Hydrogen gas gene rat­
ed by the ba tte ry is explosiv e.
- To reduce the danger of explosion, never
connect or d iscon nect charger cab les wh ile
the charge r is operating.
- Fast cha rging a batte ry is dange rous and
should only be at tempted by a compe tent
technicia n w it h the proper eq uipment.
- Battery acid that may sp ill dur ing cha rging
should be washed
off with a solut io n of
warm water and baking soda to neutralize the a cid .
@ Note
Neve r use a fast charger as a booster to start
the e ng ine . T his w ill ser iously damage sensi­
tive elec tronic components, s uch as co ntrol
units , relays, radio, etc. , as we ll as the battery
cha rger.
Battery replacement
The new battery must have the same specifica­
tions and dimensions as the original equipmen t
battery.
Intelligent energy management in your vehicle is
r esponsible for distributi ng the elect rical energy
t hr ough out your veh icle
9 page 175. T he intelli ­
gen t energy management sys tem w ill keep the
engi ne battery cha rged better then vehicles with ­
out this system . To make s ure t he addit iona l elec­
trical energy is avai lab le once again after yo u
have changed the battery, we recommend that
you install bat teries of the same type and manu­
facture on ly (the same as those installed at the
t ime you r vehicle was del ivered) . Specificat ions
are listed on the battery hous ing . You r autho r­
i z ed Audi dea ler m ust code t he battery in the en-
ergy ma nagement system to en able you to use .,,.
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