Audi A4 Owner's Manual page 14

document_0900452a81b1b9de.book Seite 12 Donnerstag, 26. Juli 2007 9:16 09
12 Instruments and warning/indicator lamps
Warning symbol in instrument cluster

If the symbol lights up in the display, this means that either the
coolant temperature is too high or the coolant level is too low
⇒ page 33.
If the needle is at the top end of the dial, this means the coolant
temperature is too high. Stop the vehicle, switch off the engine and
wait for it to cool down. If the warning lamp starts flashing again
after just a short distance, contact a qualified workshop.
WARNING
Before opening the bonnet and checking the coolant level,
please observe the warning information on ⇒ page 255, "Working
on components in the engine compartment".
Never open the bonnet if you can see or hear steam or coolant
escaping from the engine compartment; there is a risk of being
scalded. Wait until you can no longer see or hear escaping steam
or coolant.
Caution
Additional lights and other accessories in front of the air inlet
reduce the cooling effect of the radiator. At high outside tempera-
tures and high engine loads, there is a risk of the engine over-
heating.
The front spoiler also ensures proper distribution of the cooling
air when the vehicle is moving. If the spoiler is damaged this can
reduce the cooling effect, which could cause the engine to overheat.
You should obtain professional assistance.

Rev counter
The rev counter indicates the number of engine revolu-
tions per minute.
You should select a lower gear if the engine speed drops below
1500 rpm. The start of the red zone on the dial indicates the
maximum engine speed which may be used briefly when the engine
is warm and after it has been run in properly. However, it is advisable
to change up a gear or move the selector lever to "D" (or lift your
foot off the accelerator) before the needle reaches the red zone.
Caution
Never allow the rev counter needle
the red zone on the dial for more than a very brief period: there is a
risk of damaging the engine. The start of the red zone on the dial is
different for some engine versions.
For the sake of the environment
Changing up a gear early will help you to save fuel and minimise
engine noise.
SET button
This button has a number of different functions.
A ⇒ page 11, fig. 2 to go into
2
Fig. 3 Instrument
cluster: SET button