Removing and installing steering column electronics control unit J527, version with mechanical ignition lock — AUDI

Removing and installing
steering column electronics control unit
J527
, version with mechanical ignition lock
The
airbag coil connector and return ring with slip ring
F138
and the
steering angle sender
G85
are integrated in the
steering column electronics control unit
J527
.
If control unit is to be renewed, select the
“Replace control unit”
function for appropriate control unit in
Vehicle diagnostic tester
.
Removing
Note
Return ring with slip ring must be removed/installed in centre position (wheels in straight ahead position).
Move steering wheel down and to rear as far as possible, making use of full range of steering column adjuster.
Remove airbag (driver side)
General body repairs, interior
Rep. gr.
69
Airbag (driver side); Removing and installing airbag unit with igniters
.
Remove steering wheel
Running gear, axles, steering
Rep. gr.
48
Steering wheel; Removing and installing steering wheel
.
Remove trim for steering column switch module
General body repairs, interior
Rep. gr.
68
Shelves / trim panels; Exploded view - steering column trim
.
Pull out connector locking element
4
, press down release mechanism and unplug electrical connector
3
.
WARNING
Risk of irreparable damage to electronic components due to static discharge.
Before disconnecting the electrical connection, the mechanic must discharge static by briefly touching striker plate for door or similar.
Pull out connector locking element
1
, press down and unplug electrical connector
2
.
Apply screwdriver
7
at retaining hook
6
, as shown in illustration, and carefully release electrical connectors
1, 3, 4, 5
.
Remove bolts
arrows
.
Detach
steering column electronics control unit
J527
item 2
from steering column switch module.
Installing
Installation is carried out in the reverse order; note the following:
Make sure all electrical connectors are properly engaged.
Install trim for steering column switch module
General body repairs, interior
Rep. gr.
68
Shelves / trim panels; Exploded view - steering column trim
.
Install steering wheel
Running gear, axles, steering
Rep. gr.
48
Steering wheel; Removing and installing steering wheel
.
Install airbag (driver side)
General body repairs, interior
Rep. gr.
69
Airbag (driver side); Removing and installing airbag unit with igniters
.
After renewing return ring with slip ring, perform calibration of
steering angle sender
G85
in
“Guided Functions”
mode
Vehicle diagnostic tester
.
Tightening torques
Chapter
“
Exploded view - steering column switch module (with mechanical ignition lock)
”