Audi R8 Spyder 2011 Owner's Manual page 222

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220
What
do I do now?
connected to the battery of
another
vehicle,
using a pair of jumper cables to start the en-
gine.
Both batteries must be rated at 12 volts. The
capacity (Ah) of the booster battery must not
be substantially less than the capacity of the
discharged battery.
Jumper cables
Use
only
jumper cables of sufficiently large
cross section to safely carry the starter cur-
rent. Refer to the manufacturer's
specifica-
tions.
Use only jumper cables which have
insulated
terminal clamps and are properly marked for
distinction :
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
injury. Follow the instructions below for
safe handling of your vehicle's battery.
- Always shield your eyes and avoid lean-
ing over the battery whenever possible.
- A discharged battery can already freeze
at temperatures
just below 32 °F (0 °C).
Before connecting a jumper cable, the
frozen battery must be thawed com-
pletely, 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 gas-
es. Keep sparks, flame and lighted ciga-
rettes 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 bat-
tery. Use of batteries of different voltage
or substantially different "Ah" rating
may cause an explosion and personal in-
jury.
- Never charge a frozen battery. Gas trap-
ped in the ice may cause an explosion.
- Never charge or use a battery that has
been frozen . The battery case may have
be weakened .
- Use of batteries of different voltage or
substantially different capacity (Ah) rat-
ing may cause an explosion and injury.
The capacity (Ah) of the booster battery
should not be lower than that of the dis-
charged battery.
- Before you check anything in the engine
compartment,
always read and heed all
WARNINGS
9
page 175, Working in the
engine comportment.
(!)
Note
-Applying a higher voltage booster bat -
tery will cause expensive damage to sen-
sitive electronic components, such as
control units, relays, radio, etc.
- There must be no electrical contact be-
tween the vehicles as otherwise current
could already start to flow as soon as the
positive(+) terminals are connected.
(D
Tips
- The discharged battery must be properly
connected to the vehicle's electrical sys-
tem.
- Switch off any car phone, or follow the
car phone instructions for this situation.

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