DIY Cruise Control for 2012 Yaris - Good News!

[CTScott]

Originally Posted by meszar

Brown - 0
Grey (right of brown) - 5 - 5,5

Interesting. I have not had the opportunity to measure the voltage on the CCS wire of a third generation Yaris, so the 5V, rather than 12V might be OK.

Try jumping the brown to the grey with the Ignition ON, but engine off (you can use a bent paper clip or small piece of wire). If you touch those two terminal together briefly you should be able to toggle the cruise control symbol on and off on the cluster, if it works.