Table of contents: Removal the multifunction steering… ↓ Installation ↓
To achieve the best control of the infotainment system, telephone and navigation system, a number of buttons are built into the steering wheel. With Tiptronic, additional switches for controlling this system are installed on the left and right. Used multifunction steering wheel "J453" (under the right button) reads information about button presses and transmits it via the LIN bus (single-wire bus) to the steering column electronics control unit "J527". From the used steering column electronics "J527" information is transmitted via the CAN bus (Comfort) and the diagnostic interface of the data bus "J533" to individual devices. Troubleshooting is carried out in the "Guided Fault Finding" mode.
- 1. Multifunctional buttons
- 2. Bolt 3 Nm
Completeness in MMI version 1. Multifunctional steering wheel; 2. Used steering column "J527" on the steering column; 3. Diagnostic interface of the data bus "J533" (behind the glove compartment on the left); 4. CD-changer "R41" (in the glove compartment); 5. Radio receiver "R" (MMI) (behind the left trunk trim); 6. Used electronic communications 1 "J794" (in the front panel); 7. Used digital acoustic package "J525" (behind the left trunk trim); 8. TV tuner "R78" (behind the left trunk trim); 9. CAN bus (Comfort)
Removal the multifunction steering wheel buttons
Switch off all electrical consumers. Switch off the ignition. Remove the driver's airbag. Remove the decorative ring from the steering wheel. Disconnect the plug connection "1" on the multifunction steering wheel button "2".
Press button "2" in the direction of the arrow out of the steering wheel. Turn the multifunction button. Disconnect plug connection "2" from the Tiptronic switch on the multifunction steering wheel button "1" and remove the button.
Installation
Installation is in reverse order. Removal of the left button of the multifunctional steering wheel is carried out in a similar manner.
[The article was copied from the website: AUDIMANUAL.RU]