relay AUDI S6 2009 Owners Manual

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Trailer towing
Driving with a trailer
General information
Your Audi was designed primarily for passenger transpor­
tation.
If you plan to tow a trailer, please remember that the additional load
wi ll affect durability, economy and performance.
Trai ler towing not on ly p laces more stress on the vehicle, it a lso ca lls
for more concentration from the driver.
For this reason, always fol low the operating and driving instructions
provided and use common sense.
0 Note
If you are going to tow a trai ler, you must activate the trailer opera­
tion mode =>
page 186, "Towing a trailer".
Technical requirements
Tra iler 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 secure ly on the ve hicle's chass is at a
technically sound
location. Use only a trailer hitch with a removable ball mount.
Always check with the trai ler hitch manufacturer to make sure that
you are using the correct hitch .
Do not use a bumper hit ch.
The hitch must be installed in such a way tha t it does not interfere
with the impact-absorbing bumper system. No modifications should be made to the vehic le exhaust and brake systems. From time to time, check that all hitch mounting bolts remain securely
fastened.
When you are no
t towing a trailer, remove the traile r hitch ball
mount. This prevents the hitch from causing damage shou ld your
vehic le be struck from behind=>& .
Traile r br akes
If your trailer is equipped with a braking system, check to be sure
that it conforms to al l regu lations .
The trai ler hydraulic brake system must no t be direct ly connected to
the vehicle's hydraulic brake system.
Safet y chains
Always use safety chains between your vehicle and the trailer.
Trailer light s
Trailer lights must meet a ll regulations. Be sure to check with your
Audi dealer for correc t wiring, sw itches and relays .
Mirrors
If you are unable to see the traf fic behind you using the regu lar
outside mirrors, then you
must install extended mirrors. It is impor­
tant that you
always have c lear vision to the rear.
& WARNING
After rem oving the tr aile r hitch , do not store it in your vehi cle. In
ca se of sudde n braking , the hit ch co uld fl y for ward and injure you
or your p asseng ers. a

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& WARN ING (c ontinu ed )
• Bef ore you chec k anything in the engin e compartment , always
re ad and h eed all W ARNINGS =>
page 293, "Engine compa rtment".
0 Note
• Applying a higher voltage booster battery wil l cause expensive
damage to sensitive electronic components, such as contro l units,
relays, radio, e tc.
• There must be no electrical contact between the vehicles as
otherwise current could already start to flow as soon as the positive
( + ) terminals are connected .
[ i ] Tip s
• The discharged battery must be properly connected to the
vehic le's e lectrical system. When jump starting or charging the
battery, never connect the negative ground cable to the battery
negative pos t because the battery manager system must be ab le to
detect the battery's state of charge . Always connect the negative
ground cable to the negat ive ground post of the battery manager
control unit. •
Use of jumper cables
Make sure to connect the jumper c able clamps in exac tly
the order described below!
F ig . 27 0 Engin e
co mpartm ent : Co nnec­
to rs for ju mp er ca ble s
and cha rger
F ig . 2 71 Jump starti ng
w ith th e battery of
anot her veh icle: A -
d isc harg ed veh ic le
b att ery, B -boost er
batt ery
The proced ure descr ibed below fo r connecti ng jumper
cables is int ended to prov ide a j ump start f or y our vehicle .
Vehicle with dis charg ed battery:
- Turn off lights and accessories, move lever of automatic
transmission to
N (Neutral) or P (Par k) and set parking
brake .
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