relay AUDI A4 1999 B5 / 1.G ABS Bosch 5.0 Workshop Manual
Page 3 of 12
45-8
 
  
4 - 
Rubber grommet 
5 - 
ABS wiring harness connector 
Release and removeThe connector is part of the ABS wiring 
harness. Be aware of different versions for 
FWD and AWD models Make sure connector is in the correct 
position and properly locked 
6 - 
Screw 5 Nm (44 in lb)
7 - 
Cover panel 
8 - 
ABS solenoid valve relay 
9 - 
ABS return flow pump relay 
Pa
ge 3 of 12 Anti-lock Brake S
ystem 
(ABS
), Bosch 5.0
11/19/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU03.45.2 
Page 4 of 12
45-9
 
  
CAUTION! 
Apart from replacing the two relays, repair work 
on the ABS hydraulic unit is not permitted. Do 
not loosen bolted connections.  10 - 
ABS hydraulic unit 
  Be aware of different versions:
ABS FWD modelsABS/EDL FWD models, ABS/EDL/ASR 
FWD models   Fig. 1
 
ABS/EDL AWD models   05.95   Fig. 2ABS/EDL AWD models 05.95     Fig. 3Replace complete ABS hydraulic unit, if 
necessary. The ABS hydraulic unit is supplied as a 
replacement part that is pre-bled. 
Pa
ge 4 of 12 Anti-lock Brake S
ystem 
(ABS
), Bosch 5.0
11/19/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU03.45.2