Audi 100 Quattro, Owner'S Manual

Page: 55 / 180

CONTROLS AND EQUIPMENT
53
Checking the display
With the car stationary and with the
ignition on, you can check the symbols
one after the other by briefly pushing on
the knob (arrow). The engine can either
be running or not. Performing this brief
check assures you that the display is
functioning properly. When driving, you
cannot check the function.
For USA models the display check is not
possible whenever red or yellow symbols
are displayed. For Canada models this
check is not possible with a red symbol in
the display.
When checking the symbols, other
symbols will appear which are not
described in this section because they do
not apply to your particular car.
Switching off the yellow symbols
On USA models, the yellow symbols in
the display can be switched off and then
on again by pushing the check button.
If an additional malfunction is detected by
the system or whenever the ignition is
switched on the total number of faults will
be shown in the display although the
yellow symbols have previously been
switched off.
Operation
When the ignition is turned on, the "OK"
signal will light up for a few seconds to
indicate proper vehicle operation.
In the event of a malfunction or
component failure the acoustic warning
tone and the respective light symbol will
be displayed instead of the "OK".
If neither the 'OK' light nor any other
warning light comes or after the ignition is
turned on the entire Auto-Check System
must be inspected.