Right side steering wheel buttons.

[Voodoo101]

My 2009 Vellfire only has buttons on the right side of the steering wheel. My Android head unit can read these buttons through the canbus and control the volume etc.

 

I have seen that some have both right and left side buttons. I'm guessing these are for hand's free calling. I assume that Toyota, like everything else has the wiring in for these button and will also send signals to the canbus for my head unit to read. Has anybody added these button?

[Chris.ac]

right side? picture please, usually the volume, back/forward, mode and display are on the left, handsfree calling answer/hangup and voice activation mode on right.

[Chris.ac]

But yes, from all the wiring diagrms i have, the buttons shouold be plug and play, as there are only really 3 signal wires and the head unit is just detecting different resistance levels when you press buttons, to determine which button was pressed.

[Sorin]

On 8/13/2022 at 9:40 AM, Chris.ac said:

But yes, from all the wiring diagrms i have, the buttons shouold be plug and play, as there are only really 3 signal wires and the head unit is just detecting different resistance levels when you press buttons, to determine which button was pressed.

Chris, do you know where I can find these 3 wires? I don't have them in the harness at the back of the head unit and I want to look for them at the other end, but where is the other end of the wires?

[Chris.ac]

[Sorin]

On 3/16/2024 at 8:33 AM, Chris.ac said:

Hi Chris, I found all three wires, SWG, SW1 and SW2. Thank you so much. I have connected the sw1 and sw2 to the coresponding wires on my 16 pin head unit connector, but still nothing. I am sure that I have to connect the swg wire too, but I don't know where. Do you have an ideea, please?

[smurf]

Without SWG connected in some way it just isn't going to work. It needs it to measure the resistance and determine which button has been pressed. 

[Geralt]

20 minutes ago, Sorin said:

I am sure that I have to connect the swg wire too, but I don't know where.

@smurf is right. You've got to connect SWG (Green) to GND. Any spare GND on any connector on the head unit will do. Then don't forget to program the switches in head unit settings.

[Sorin]

14 minutes ago, smurf said:

Without SWG connected in some way it just isn't going to work. It needs it to measure the resistance and determine which button has been pressed. 

I understand this and yhis is exactly why I am asking where to connect it. I do not see any reference of it in other posts here and nothing on the pin names from my head unit

[Geralt]

Any spare GND on any connector on the head unit will do.

[Sorin]

12 minutes ago, Geralt said:

Any spare GND on any connector on the head unit will do.

🤣 We both posted in the same time!

[Sorin]

50 minutes ago, Geralt said:

Any spare GND on any connector on the head unit will do.

Geralt, thank you so much, you are a star! Connected the swg to ground and ..... all working fine now!🙌