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Gen II steering wheels controls don't light up

Discussion in 'Gen 2 Prius Main Forum' started by repnatl, Dec 21, 2017.

  1. repnatl

    repnatl Junior Member

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    On my 07 I noticed my steering wheel controls don't light up. I've tried two known working sets and they don't light up either. I have changed my radio out and don't have the steering wheel radio controls hooked up but the hvac and info buttons work fine. I did change out my MFD for a navigation MFD I don't know if that makes a difference or not. Only issue really is they don't illuminate on the steering wheel. Any suggestions?

    Posted via the PriusChat mobile app.
     
    #1 repnatl, Dec 21, 2017
  2. bisco

    bisco cookie crumbler

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    could it be the clock spring?
     
    #2 bisco, Dec 21, 2017
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  3. repnatl

    repnatl Junior Member

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    Don't think so no other issues in the steering area no noises like it's damaged no airbag light. Is there a fuse strictly for illumination?

    Posted via the PriusChat mobile app.
     
    #3 repnatl, Dec 22, 2017
  4. bisco

    bisco cookie crumbler

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    do not know, should be in the o/m. does the dimmer wheel affect it?
     
    #4 bisco, Dec 22, 2017
  5. edthefox5

    edthefox5 Senior Member

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    Lots of things replaced. After which device replaced did you lose the lights.

    Best Buy installed a new Pioneer Stereo in my 07 and I paid $15 for interface cable that allows steering wheel to stilll have radio controls. Works good. Steering wheel stereo controls is a must. You may have lost it with 5he new stereo.
    I will check later for fuses in illumination circuit I have the schema5ic for the g2.

    I would have posted this in the Gen 2 Accessories and modifications forum. Lots of stereo guys in there they may know, And use search forum.
     
    #5 edthefox5, Dec 23, 2017
    repnatl likes this.
  6. repnatl

    repnatl Junior Member

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    Dimmer has no effect.

    Posted via the PriusChat mobile app.
     
    #6 repnatl, Dec 23, 2017
  7. repnatl

    repnatl Junior Member

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    I think I still have the original radio in the garage along with the other MFD. I will try both of those after Xmas. I also posted in that section to see. I'm still working on the wrong for the aftermarket controls no luck yet I've emailed the manufacturer. Honestly don't remember if they worked at all I was used to the layout from the other gen II I own.

    Posted via the PriusChat mobile app.
     
    #7 repnatl, Dec 23, 2017
  8. JK919

    JK919 Member

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    I don't recall mine ever lighting up... but I've never looked for it either.

    Huh, maybe I'll go check.
     
    #8 JK919, Dec 24, 2017
  9. R-P

    R-P Active Member

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    I have the same problem but never spend any time finding out where the fault lies or if the old OEM radio would solve it.

    They work fine, but don't light up. I think it is also since I changed the OEM radio for an aftermarket one. I think they worked with the old OEM radio + non-OEM carkit. The carkit is a model that has an amplifier build in that splices into the speakerwiring to play MP3's (and phonecalls), so I used that cabling that turns the Toyota wiring into ISO wiring already put in there by the previous owner/installer when fitting the carkit.
     
    #9 R-P, Dec 24, 2017
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  10. repnatl

    repnatl Junior Member

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    [​IMG]<br /><br /><br />The illumination is controlled by this plug on the back of oem radio that. This is where the steering wheel control wiring is. Well got it figured out just need to do some wiring lol<br /><br />Posted via the PriusChat mobile app. 1514486242192.jpg

    Posted via the PriusChat mobile app.
     
    #10 repnatl, Dec 28, 2017
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  11. repnatl

    repnatl Junior Member

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    1514495967399.png

    This was how I wired the controls and lights up for the android head unit no other harness was needed it was built into the radio controls.

    Posted via the PriusChat mobile app.
     
    #11 repnatl, Dec 28, 2017
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  12. TomB985

    TomB985 Member

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    This thread is a bit old, but I am having issues with my steering wheel backlights as well.

    From the previous post, it would appear that one of the circuits in the above post affects the backlights. I installed the resistor as per the instructions between the white and pink wires of that harness, and all of my climate controls work. I can't make heads or tails of the wiring diagrams, does anybody know what I need do here? My plan is to only keep the car for a year or so, and I'll be reinstalling the factory head unit when it sells. So I don't want to chop up the factory wiring any more than I have to...which is why I'm foregoing the steering wheel controls.
     
    #12 TomB985, Nov 24, 2018
  13. George W

    George W Senior Member

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    The steering wheel controls are not backlit on my 08 Touring, but my Prius also doesn't remember it radio settings (I'm the 3rd owner, so who knows what glitches it may have).
     
    #13 George W, Nov 24, 2018
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