ABS/Differential Lock Display - Continuously On

91audi05

Group: 45

Number: 91-02

Date: July 31, 1991


Subject: ABS and Differential Lock Display Continuously On


Model(s): 80 Quattro, 90 Quattro, Coupe Quattro


Condition:

Switch on rear axle differential corroded due to water ingress.


Production:

Improved rubber boot on wiring harness for switch.
From: November 1989
VIN: 8A_LA100508
8B_LA006992


Service:

1) Check Switch - P/N 013 941 521A and replace if necessary.

2) Check wiring harness P/N 443 971 559 and replace if necessary.

Only replace the printed circuit board, (P/N 893 919 216) if the repair according to points 1 an 2 are not successful.