Removing and installing active steering safety lock actuator F437 — AUDI

Removing and installing
active steering safety lock actuator
F437
Special tools and workshop equipment required
Vehicle diagnostic tester
Torque wrench
V.A.G 1783
Removing
WARNING
Note the following before working on the steering column.
Steering components are safety components!
For reasons of safety, all work on the steering system must be carried out by suitably trained and qualified personnel. Work that is not performed properly can result in serious accidents.
Restore the layout of the electrical wiring harnesses exactly as it was prior to removal.
Restore the attachments of the electrical wiring harnesses exactly as they were prior to removal.
Note
The steering wheel must not be turned and the straight-ahead position or the steering angle of the front wheels must not be altered when the
active steering safety lock actuator
F437
(dynamic steering) has been removed. Otherwise the steering wheel may not be properly centred after the work is completed. It is important to keep all components clean when carrying out the following steps.
Turn steering wheel to straight-ahead position (front and rear wheels must be in line) and allow steering lock to engage in straight-ahead position if possible.
Switch off ignition and remove ignition key.
Mark position of
active steering safety lock actuator
F437
(dynamic steering)
arrow
for subsequent installation.
Unplug electrical connector
4
on
active steering safety lock actuator
F437
(dynamic steering)
3
.
Clean paint residue out of heads of bolts
1 and 2
.
Remove bolts
1 and 2
and detach
active steering safety lock actuator
F437
(dynamic steering)
3
from steering column.
To remove bolts
1 and 2
, use socket provided in repair kit for new
active steering safety lock actuator
F437
(dynamic steering).
Installing
Installation is carried out in the reverse sequence. Note the following points:
After renewing the
active steering safety lock actuator
F437
(dynamic steering), you must perform a software update of the
active steering control unit
J792
; start the corresponding program on the
vehicle diagnostic tester
.
If a new
active steering safety lock actuator
F437
(dynamic steering) is being installed, transfer the marking from the old part to the new part before installation.
Fit
active steering safety lock actuator
F437
(dynamic steering) according to marking made before removal and secure with two new bolts
1 and 2
as specified in table below, using socket supplied in repair kit.
Sequence
Bolt no.
Tightening torque
1
1
2 + 2 Nm
2
2
4 + 2 Nm
3
1
8 + 2 Nm
4
2
8 + 2 Nm
Plug in electrical connector on
active steering safety lock actuator
F437
(dynamic steering).
Erase event memory.
Drive vehicle to initialise system - turn wheels to approx. 45° from the straight-ahead position in both directions.
Checking function
Road test vehicle in an area closed to traffic and check the function of the steering:
Steering force
Self-centring
Play
Noise
Warning lamp
Read out event memory after road test. The event memory must not show any faults.