change key battery AUDI Q7 2009 Owner´s Manual

Opening and closing
Check light in the master key
The check light in the m aster key provides information
about different conditions .
Check light functions in the master key:
V eh icle wi thin r an ge of th e key
Fig . 31 Che ck light in
th e m aste r k ey
If the vehic le is within range of the key, the check light comes on
briefly once when a button is pressed .
V ehicle outside the r an ge of th e key
If the vehicle is outs ide the range of the key, the check l ight comes
on briefly once and then shows the status of the vehicle door locks:
• If the light is flashing qu ickly, the vehicle is not locked .
• If the light is flashing slowly, the vehicle is locked .
St ate o f ma ste r ke y batt ery
If the check light does not come on, the battery is dead and has to
be rep laced. In addition, when the battery is dead the,.. symbol
appears in the instrument cluster display as well as the message :
Please change key battery
Battery replacement~ page 50.
[ i ] Tips
P lease note that the current state of the vehicle door locks can only
be recalled with the master key that was last used to lock the
vehic le. It is possib le that a different state is shown for the door
locks on the other master key which is not the same as that of the
vehic le .•
Master key battery replacement
Each mas ter key contains a battery housed under the
cover.
F ig. 3 2 Master key :
open ing the cov er
We recomme nd having the battery changed by an autho ­
ri zed Audi dealer. However, if yo u w ish to rep lace the dead
battery yourself, proceed as follows:
- Pry apart t he base => fig . 32 @and the cover ®
carefully
with a coin .
- Remov e th e co ve r (arr ow).
- Remove the dead battery from the cover .
- Insta ll the new battery. Please make certain t hat the"+"
sign o n the batte ry faces down. Correct pola rity is shown
on t he cover. _,,,

-~_C_ h_e _c _ k_ i_n ...:::g::;...._ a_n_ d_ f_ i_ll _in -'g:::;.._ ___________________________________________ _
& WARN ING (c o ntinued )
• Brake failure can re sult from old or inappr opriate brake fluid .
Ob serve the se precautio ns:
- Use only brake fluid that meets SAE specific ation J 1703 and
c onform s to Fed era l Moto r Vehi cle St anda rd 116. Al ways c heck
with your authori zed Audi dealer to make sure you are u sin g
the corre ct brake fluid. The correct typ e of brake fluid i s also
indicated o n the brake fluid reser vo ir .
- The br ake flu id mu st be ne w. Heavy u se of the brake s can
c au se a vapor lock if the brake fluid i s left in the s ystem too
long. Thi s can seriou sly affect the effi cien cy of the brake s as
w ell a s your safet y. Thi s could re sult in an acci dent .
0 Note
Brake fluid will damage the paint of your vehicle .
For the sake of the environment
Because of the problem of proper disposal of brake fluid as well as
the special too ls required and the necessa ry expertise, we recom­
mend that you have the brake fluid changed by your authorized Audi
dea ler .•
Battery
General information
Under normal operating condi tions, the battery in your Audi does
not need any maintenance. With
high outside temperatures or long
daily drives we recommend that you have the e lectrolyte level
checked by an au thorized Audi dealer or qualified workshop . The
e lectrolyte level should also be ch ecked each time the battery is
charged ~
page 344.
Have the battery checked when you take your vehicle in for service .
Yo u are well advised to replace a battery that is o lder than 5 years .
With certain types of airbag dep loyment, the battery is discon ­
nected from the vehicle electrical system for safety reasons~
& in
"Repair, care and disposal of the airbags" on
page 255.
Disconnecti ng th e batt ery termin als
Some vehicle functions (power window regulators , for example) are
lost if the battery termina ls are disconnected. These functions have
to be relearned after the battery terminals are connected again . To
prevent this, the battery should only be disconnected from the
vehic le electrical sys tem when abso lutely necessary for repairs .
Vehicles not driven for long per iods
If you do not drive your vehicle ove r a period of several days or
weeks, electrical components are gradually cut back or switched off .
T his reduces energy consumption and maintains starting capab ility
over a longer period
~ page 295 .
Take i nto consideration that whe n you u nlock your vehicle, some
convenience functions, such as the master key remote function or
powe r seat adjustme nt, may not be ava ilable. The convenience
functions will be available again when you turn on the ignition and
start the engine .
Wint er op erati on
Duri ng the winter mont hs, batte ry capacity tends to decrease as
temperatures drop . This is because more power is also consumed
whi le star tin g, and the headlights, rear window defogger, etc ., are
used more often.
Avoid unnecessary power consumption, particular ly in city traffic or
when trave li n g o nly short dis tances . Let your authorized Audi dea ler
check the capacity of the vehicle battery before winter sets in
~ page 344. A we ll cha rged battery w ill not only preven t starting
problems when the weather is cold, but will also last longer . ..,_