1999 AUDI A4 traction control

01-228

"Brake
malfunction"
symbol ABS/EDL
warning
light
-K47- Traction
control
indicator
light
-K86- Possible reasons why the indicator lamps light up
on on on The ABS and traction control indicator lights go on, and three seconds after
the ignition is switched on the red "brake system malfunction" symbol goes
on.
WARNING!
The brake system is only partially functional. Because brake pressure at
the rear wheels is no longer regulated vie Electronic Brake Distribution
(EBD), the rear wheels can lock even during light braking (excessive
braking at rear axle). This can cause the rear of the vehicle to break
loose and thereby cause and accident.
Note: For vehicles with automatic transmission, the red "brake system
malfunction" symbol does not appear immediately after the ignition is
switched on. Instead, the note "Depress brake pedal before engaging gear"
appears in the display. Press the brake pedal and select a gear. The red
brake warning light appears, if the light control is working properly.
A malfunction deactivated the ABS/EDL, ASR/ESP and the "Electronic
Brake Distribution" (EBD).Check DTC memory page 01
-356
. Pa
ge 14 of 27 Electronic Stabilization Pro
gram
(ESP
) Bosch 5.3
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU02.01.14

01-229

"Brake
malfunction"
symbol ABS/EDL
warning
light
-K47- Traction
control
indicator light
-K86- Possible reasons why the indicator lamps light up
off off on
The traction control indicator light does not turn off after the self-
test.


There is a malfunction that only affects the traction control. The
ABS/EDL and EBD systems are not deactivated. Check DTC
memory page 01
-356
.
Traction control has been switched off using the traction control
button. If the traction control indicator light does not light up in this
case, check the switch and the indicator light, carry out the
"Electrical test", steps 19 and 20. Short circuit to B+ in the ASR/ESP button: The traction control
indicator light goes out five minutes after the ignition is switched on.
Carry out "electrical test", step 20. There is a short to Ground (GND) in the wiring that controls the
traction control indicator light between terminal 31 of the ABS
control module -J104- and the instrument cluster. Carry out
"electrical test", step 19.
Pa
ge 15 of 27 Electronic Stabilization Pro
gram
(ESP
) Bosch 5.3
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU02.01.14

01-230

"Brake
malfunction"
symbol ABS/EDL
warning
light
-K47- Traction
control
indicator light
-K86- Possible reasons why the indicator lamps light up
on on off
No DTCs are stored in DTC memory. The ABS and traction control
warning lights do not go out after the self-test, and three seconds
after the ignition is switched on the red "brake system malfunction"
symbol goes on. There is an open circuit or short circuit to B+ in the wiring that
controls the traction control indicator light between terminal 32 of
the ABS control module -J104- and the instrument cluster; carry
out "Electrical test" step 17. Voltage supply for control module less than 7 volts; carry out
"Electrical test" step 21.
on off off
No DTCs are stored in DTC memory. The red "brake system
malfunction" symbol remains lit after the ignition is switched on.
The brake fluid level is too lowMalfunction in instrument cluster: Carry out "Electrical test", step
18.
Pa
ge 16 of 27 Electronic Stabilization Pro
gram
(ESP
) Bosch 5.3
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU02.01.14

01-234

Code Control Module (function 07)


After installing a new ABS control module
(w/EDL) -J104- or a new steering angle sensor
-G85-, the ESP system must be coded again.
After the coding, the steering angle sensor
must be calibrated.
The coding of the ESP control module is used for
adaptation of the control module to the vehicle.
Coding is only possible if a dealership number is
stored in the VAG1551 scan tool.

Note:
If the control module is coded with code 00000 or
with a code that does not match the vehicle, the
ABS warning light -K47- and the traction control
indicator light -K86- remain continuously lit, and
the DTC 01044 - Control module incorrectly
coded - is stored in DTC memory of the control
module.
Before the control module can be coded, "Login
Procedure" function 11 must be successfully
carried out using the VAG1551/1552 scan tool.
Pa
ge 20 of 27 Electronic Stabilization Pro
gram
(ESP
) Bosch 5.3
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU02.01.14