Caution: Removal and installation of individual components of the steering column switch must be carried out in the prescribed sequence. After installation of the new control unit for steering column electronics "J527", it must be programmed (encode). If the steering column switch does not function correctly, it is necessary to check the coding of the steering column electronics control unit "J527".
Fault detection and error indication
The steering column electronics control unit "J527" is equipped with a self-diagnosis system, which facilitates troubleshooting. To troubleshoot, use the tester -VAS 5051A- in the "guided troubleshooting" mode.
- 1 - Direction indicator switch, observe the sequence of removal and installation. "Direction indicator switch" consists of the elements of the direction indicator switch "E2", manual switch for low beam headlights and high beam light signal "E4" and, depending on the configuration (cruise control) from the cruise control switch "E45". The picture shows the "turn signal switch" without the cruise control switch "E45"
- 2 - Steering column switch bracket
- 3 - Windscreen wiper switch "E"
- 4 - Mounting bolt
- 5 - Steering column electronics control unit "J527"
- 6 - Airbag coil spring and return ring with slip ring "F138"
- 7 - Steering angle sensor "G65"
Sequence of removal and installation of the steering column switch design elements
When removing the steering column switch assembly with the bracket, it is disassembled and the steering column lock housing is also removed. New shear screws are required to install the steering column lock housing. Even if it is necessary to remove or replace only one component of the steering column switch, it is always necessary to follow the procedure described below. Disconnect the battery. Remove the steering wheel. Remove the steering column trim. Remove the components of the steering column switch in the following order.
- Steering column electronics control unit "J527"
- Airbag coil spring and return ring with slip ring "F138"
- Steering Angle Sensor "G85"
- Direction indicator switch "E2"
- Windscreen wiper switch "E"
- Steering column switch bracket
Installation is carried out in reverse order.
Removal and installation of the steering column electronics control unit "J527"
Caution: Removal and installation of individual components of the steering column switch must be carried out in the prescribed sequence. After installation of the new control unit, it must be coded. If the steering column switch does not function correctly, the coding of the control unit must be checked.
Unscrew screw "1", On the steering column control unit "J527" insert the corresponding wire "2" approximately 45 mm into the hole "arrow 1" and release the front locking tab "arrow 2".
Using a suitable screwdriver, press the tab of the rear lock "arrow A" backwards towards the steering wheel to release the lock. Carefully pull the steering column electronics control unit "J527" downwards off the steering column stalk.
Instructions: When tightening, make sure that the steering column electronics control unit "J527" comes down straight and without any distortion.
Unlock "arrow A" connector "1" and disconnect it from the steering column electronics control unit "J527". Remove the lock "3" from connector "2". Unlock "arrow B" connector "2" and disconnect it from the steering column electronics control unit "J527".
Installation is carried out in reverse order.
Instructions: When connecting the connectors, make sure that the contacts are not bent and that the connector clicks into place.
Removal and installation the airbag coil spring and return ring with contact ring "F133"
Instructions: When dismantling, the coil spring must not be twisted from a position other than neutral; the wheels must be in the "straight-ahead position".
Slightly lift the "arrow" tabs on the coil spring "1" and pull the coil spring back off the steering column and switch module.
Installation is carried out in reverse order.
Instructions: When installing, the coil spring must be in the neutral position and the wheels must be turned to the "straight ahead position".
The neutral position of the coil spring is shown below, which varies by manufacturer. The color-coded protrusion (black rectangle) "arrow" must be in the viewing window "1".
The yellow colored tape "arrow" must be in the viewing window "1".
Instructions: After installing a new steering angle sensor "G95", it is necessary to perform a "basic setup".
Removal and installation the steering wheel angle sensor "G85"
Pull the steering wheel angle sensor "G85" "1" back from the steering column switch "arrow".
Installation is carried out in reverse order.
Removal and installation the turn signal switch
Instructions: "The turn signal switch" consists of the turn signal switch "E2", the low beam switch and the light signal "E4" and, depending on the configuration (cruise control) cruise control switch "E45". For clarity, the figure shows the removed steering column switch with the cruise control switch "E45".
Unlock the "arrow" mounting brackets using a 1.0 mm "1" feeler gauge and remove the "turn signal switch" backwards (to the back of the car).
Installation is carried out in reverse order.
Instructions: The "turn signal switch" should lock into place with a clearly audible click.
Removal and installation the wiper switch "E"
Instructions: For clarity, the figure shows the steering column switch removed.
Unlock the "arrow" mounting brackets using a 1.0 mm feeler gauge "1" and remove the windscreen wiper switch "E" back (to the back of the car).
Installation is carried out in reverse order.
Instructions: The wiper switch "E" should lock into place with an audible click.
Removal and installation the steering column switch bracket
Instructions: To remove the bracket for the steering column switch "2", it is necessary to drill out the shear screws of the steering column lock housing. New shear screws "1" are required for subsequent installation. Before drilling out the shear screws, it is necessary to check that all components attached to the bracket have been previously removed. Due to drilling, chips may get into adjacent elements, which may cause malfunctions and/or incorrect operation of the components! Therefore, when removing the structural elements of the steering column switch, the prescribed sequence must be followed.
Disconnect the battery. Remove all elements fixed to the bracket in the prescribed sequence. After all elements of the structure fixed to the bracket have been removed, the bracket itself can be removed. Drill out the mounting screws -1-of the steering column lock housing "3".
Instructions: Screws M8 "1", thread hole diameter 6.8 mm.
Pull the steering column lock housing and the "2" paddle shift bracket back off the steering column. Remove the steering column lock housing from the paddle shift bracket.
Installation
Insert the steering column lock housing into the steering column switch bracket. Push bracket "2" as far as possible onto the steering column. Connect the "arrow" connector to the reading coil "3". Screw the steering column lock housing to the steering column with new shear screws "1". Tighten the new shear screws "1" until the heads break off. Install all the elements of the steering column switch in the reverse order.
Visitor comments