How Does the Turn Signal Switch Know to Reset When My Car Stops Turning?

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When you drive, it is not uncommon to see a motorist with a turn signal on when there is no approaching exit or turn, and obviously no intention on changing lanes or turning anytime soon. In this situation, either the turn signal cancel cam is not working or they have forgotten to turn their signal off manually. How does your car know when you finish a turn so it can turn the signal light off?

Turn signals operate in a few simple steps:

  1. Power is supplied to the turn signal lights when the signal lever is pressed. The flow of electricity to the turn signals is sent through a fused circuit and a flasher to the bulbs. The signal lever stays caught in place at this time.

  2. The turn signals continue to operate while the steering wheel is turned. Power continues to flow to the turn signals in that same manner while you make the turn. It isn’t until your turn is complete and you return your steering wheel to the center position that the signal lights turn off.

  3. The turn signals are cancelled when the steering is turned to center. As you turn the steering wheel back to the center position, a cancel cam on the steering column comes into contact with the turn signal lever inside the column housing. The cancel cam lightly presses on the signal lever and turns the signal lever off. The signal lights no longer flash.

If you are making a slight, gentle turn, or if the cancel cam is broken or worn out on your steering column, you will need to manually turn off your signal lights. A light press on the signal lever will let it spring back to the off position, turning off the signal lights.


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Rigoberto

9 years of experience
706 reviews
Rigoberto
9 years of experience
Chevrolet Equinox - Brake Pads Replacement (Rear) - Niles, Illinois
Rigo was great! He got there early, finished the job early, left everything clean. He changed my rear pads and rotors. The original quoted time was 90 minutes, he was done in about 60. He knows what he is doing and I am recommending him to all my friends and coworkers.
Mercedes-Benz C250 - Brake Pads Replacement (Front, Rear) - Chicago, Illinois
Rigo is a maverick hands down. Don’t take your car for work elsewhere. Especially great at Mercedes—this guy knows his profession! I will be using him for everything related to my car going forward.

Arturo

25 years of experience
35 reviews
Arturo
25 years of experience
Kia Forte - Brake Pads Replacement (Front) - San Diego, California
ARTURO is great! very professional , fast, replaced my front brake pads and oil an filter change. everything now works and works well. Brakes have much improved stopping power and engine is smooth and quiet.Arturo is also kind and thoughtful. "Your mechanic" is very fortunate to have Arturo Lopez represent your company. I enthusiastically recommend him and "Your mechanic> as a fine operation Best regards to the Team Peter Marto
Nissan Maxima - Brake Pads Replacement (Front, Rear) - San Diego, California
Arturo was prompt and completed my brake repair, including new rotors in a very efficient manner. I am very pleased with the quality of the work and the parts and will definitely look to have him service our other car in the near future.

Scott

32 years of experience
345 reviews
Scott
32 years of experience
Lexus IS250 - Brake Pads Replacement (Rear) - Denver, Colorado
Always on time, speedy, professional, and pleasant to interact with. The work is always consistent and we'll done. I can't reccomend Scott highly enough!

Michael

10 years of experience
15 reviews
Michael
10 years of experience
Nissan Sentra - Brake Pads Replacement (Front) - Conyers, Georgia
He was promptly on time and got the job done efficiently in a timely manner. I really appreciate the rapid respone on getting the job done! I would most definitely use this service again.

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