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Old 04-17-2015, 09:30 PM   #1
CTScott
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DIY - Converting a 2nd gen Yaris to the best part of a 3rd gen (Steering wheel audio)

After driving my Subaru Crosstrek so much this winter I found that I really missed the audio controls and handsfree phone connectivity, so I decided to upgrade my 2009 Yaris with those features from a 3rd gen Yaris.

I purchased a 2013 Yaris headunit from someone on here and also got the microphone assembly from him as well. I then purchased a 2012 Yaris Hybrid steering wheel and airbag from a person in Lithuania. I went with the European
Yaris Hybrid steering wheel because it also included the phone controls (which the US 3rd gen steering wheels lacked). I also purchased a 2012 clockspring from a junkyard to upgrade mine to one with the extra wires required to have audio controls as well as cruise control. The final item I needed was an antenna adapter (off ebay) to adapt my antenna plug to the newer style of the 3rd gen headunit.

The hardest part of the install was figuring out where to put the rather large microphone assembly. After a bit of head scratching I realized that the perfect place was to the right of the steering wheel, where the push to start switch mounts on so equipped European and Japanese market cars. I just so happen to have a bunch of the trim pieces with the hole for the switch, so I glued a piece of speaker mesh over the hole and stuck the mic behind it.

The wiring changes are relatively simple.

Head unit wiring for the mic (brown, white, black and red on top) and steering wheel controls (blue, pink and red on the bottom):



Mic wiring:


Clock spring wiring for audio contols (red, pink and blue on the right):



Here's the mic mounted behind a push to start trim piece (I have loads of them on hand if someone else wants to do the same):


3rd gen clock spring with lots more wires running through the clock spring (but same connectors as the 2nd gen):


2012 European Yaris Hybrid Steering wheel and clock spring mounted:


2013 US Yaris headunit:
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Old 04-17-2015, 09:40 PM   #2
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Awesome mod! I have also been feeling my head unit lacking lately but haven't had the push to fix it. I think this is a bit beyond what I was thinking of doing
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Old 04-17-2015, 10:20 PM   #3
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This is sweet. How much was the steering wheel?

Do you also have a picture of the microphone assembly?
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Old 04-17-2015, 10:28 PM   #4
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Originally Posted by IllusionX View Post
This is sweet. How much was the steering wheel?

Do you also have a picture of the microphone assembly?
For some silly reason I did not snap a pic of the mic.

The cost for the parts was:

Steering wheel: $150
Airbag: $250
Headunit w/mic: $50
Clockspring: $35
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Old 04-17-2015, 11:32 PM   #5
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The master has done it again. I hope you develop the details like you did with cruise control. I am sure there are others on here that will give this mod a try. (guys, buy your parts from him if he has them). CTScott, you will never cease to amaze me....Way to go man!
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Old 08-30-2015, 08:08 AM   #6
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Only as addition and help for this radio and for work the bluetooth option, i find and purchase this set of cables with microphone USB and AUX that working very well with toyota oem radios. I probe in this t1816.

Are 6 Pcs and cost US$50.00 http://www.ebay.com/itm/6-PCS-Set-Wi...-/231639988790

Last edited by gatonico; 08-30-2015 at 08:34 PM.
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Old 09-09-2016, 07:13 PM   #7
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So after seeing this I bought a steering wheel out if a 2013 Yaris hybrid. I figured I could reuse my car's factory airbag since it is a 2014. However, the mounting system is actually different. I swapped the phone controls to my plastic steering wheel for now but I'm actually surprised that Toyota would make the airbags differently
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Old 09-09-2016, 07:53 PM   #8
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Quote:
Originally Posted by Dodge Aries K View Post
So after seeing this I bought a steering wheel out if a 2013 Yaris hybrid. I figured I could reuse my car's factory airbag since it is a 2014. However, the mounting system is actually different. I swapped the phone controls to my plastic steering wheel for now but I'm actually surprised that Toyota would make the airbags differently
The airbags use the same connectors, but they are physically very different.
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Old 09-09-2016, 08:18 PM   #9
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What I found when I looked further is that my car actually has two airbag connectors and the UK spec airbags apparently only have one connector. Oh well, at least I have phone switches now... Not sure that was worth $100 to have though lol.
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Old 07-27-2018, 12:21 PM   #10
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Lightbulb T1816 Din size

Is the size of the headunit is 2din (toyota stock size)?

On the mic connector, do we have the wiring pinouts on that one?

Planning to upgrade the cassette headunit of my rav4 '10 with this one.
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