Audi A4 Owner's Manual page 19

document_0900452a81b1b9de.book Seite 17 Donnerstag, 26. Juli 2007 9:16 09
Note
If the glow plug indicator lamp should start flashing while the
vehicle is moving, this indicates a fault in the engine management
system. The engine should be serviced without delay.
If the indicator lamp fails to light up when the ignition is
switched on, this can mean that the glow plug system is defective.
The engine should be serviced.
Electronic stabilisation program (ESP)
This warning lamp monitors the electronic stabilisation
program.

The warning lamp has the following functions:
It flashes when the ESP or traction control system (ASR) inter-
venes while the vehicle is in motion.
The warning lamp will light up continuously if the ESP or the
traction control system (ASR) has been switched off using the ESP
OFF button ⇒ page 222.
It lights up when the ignition is switched on and should go out
again after about 2 seconds. This signals that the lamp is working
properly.
It will light up continuously if there is a malfunction in the ESP.
It will also come on if a fault should occur in the ABS because the
ESP operates in conjunction with the ABS.
If the battery has been disconnected, if the battery voltage is very
low, or if the engine has been started from an outside power source,
the ESP system will perform an initialisation of the various on-board
sensors while you drive the first few metres. The warning lamp will
light up during this period. It will go out when the initialisation has
been completed.
If the warning lamp lights up and stays on after the engine is
started, this may mean that the control system has temporarily
switched off the ESP. In this case the ESP can be reactivated by
Controls
switching the ignition off and then on again. If the warning lamp
goes out, this means the system is fully functional.
For further information on the ESP ⇒ page 222.
Airbag system
This warning lamp monitors the airbag and seat belt
tensioner system.
The warning lamp

ignition is switched on.
If the warning lamp does not go out, or if it lights up, flashes or
flickers when the vehicle is moving, this indicates a malfunction in
the system. This is also the case if the warning lamp does not light
up when the ignition is switched on.
If a malfunction should occur, have the system checked immedi-
ately by a qualified workshop. If this is neglected, there is a risk
that the airbag system and/or belt tensioners may not be acti-
vated in an accident.
Tyre pressure monitoring
The tyre pressure should be corrected as soon as possible
if it is too low.
If the
you switch on the ignition, there is a fault in the system. Please
contact the nearest qualified workshop as soon as possible.
For more detailed information on the tyre pressure monitoring
system, please refer to ⇒ page 39.
Safety Driving tips General maintenance
Instruments and warning/indicator lamps


should light up for a few seconds when the
WARNING


symbol flashes for about a minute and then remains lit after
Self-help
17
Technical data