Quote:
Originally Posted by FRS-Learner
No, no of the lights blink fast and the dash arrow does not blink fast. The only occurrence is the really weird sound. Sounds like something electrical from the turn signal stalk.
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The whining you hear on TV is usually the sound of a capacitor charging up to store current to be discharged from the defibrillator. In our cars the turn signals use an electromechanical relay which is also where the "click noise" comes from as the turn signals go on and off. Its under the steering wheel and above the foot well and you can literally grab at it and pull it out, in fact for people that do an LED swap this is a necessary evil so the LEDs turn signals blink at the correct rate. I am sort sure where the charging noise is coming from or if it's just some sort of coil whine, but I'm pretty positive it is from both the capacitors resonating at some weird frequency:
This is a good image of what's inside a flasher relay, not ours mind you, ours are sort of beige in color on the outside and has 8 pins not 2 prongs:
The arrow points to the capacitor
OR It could be from within the turn signal stalk
To fix this if the whining is a serious annoyance and if it's from the relay you're just gonna need to buy a new stock LED relay:
http://www.ebay.com/itm/2013-Scion-F...NSjoX6&vxp=mtr
Honestly I'd order it just in case when the relay might fail, because none of our cars do the charge up whine it might mean yours will fail prematurely.