Symptoms of a Bad or Failing Turn Signal Switch

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The turn signal switch performs several functions, both electrical, and mechanical, while indicating a vehicle turn. Electrically, it signals the turn signal flasher to flash either the right or left turn lights, both front and rear. Mechanically, it maintains the turn signal flasher function until the steering wheel is reversed from the turn direction selected. For example, if a left turn signal is selected, the turn signal switch will maintain a flashing left turn signal until the steering wheel is turned a certain amount counterclockwise (for a left turn), then turned clockwise back to a straight-ahead, or centered position. The same is true for a right turn. The flashing turn signal is then “cancelled”.

One of the most frequently used electrical components on a vehicle, a failed, or failing, turn signal switch may be indicated by the following symptoms:

This symptom likely reflects a failure of the mechanical portion of the turn signal switch. Unfortunately, we’ve all seen drivers cruising straight down the road, with their turn signal still blinking. This failure mode is the likely original cause.

2. Turn signal lights don’t continue flashing unless turn signal lever is held down

Similarly, this symptom also reflects a failure of the mechanical portion of the switch. Correction of this problem is best left to a YourMechanic professional mechanic who can provide you with a diagnosis, and then perform the turn signal switch replacement.

3. Left or right turn signals or the Hazard Warning Light not working properly

The hazard warning flasher and turn signal flasher functions are built into a single, integrated electrical unit, potentially affecting both turn signal and hazard flasher functions at the same time. A YourMechanic professional can confirm the hazard flasher failure, and replace the flasher unit if this is the failing component.


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Eladio

8 years of experience
128 reviews
Eladio
8 years of experience
Honda Civic - Brake Pads Replacement (Rear) - Greensboro, North Carolina
Eladio arrived at the scheduled time and was great to work with. He was very professional and I am very satisfied with his work. This was my first time using YourMechanic and I am very pleased with how easy and convenient this service has been from start to finish. Definitely would recommend.
Nissan Altima - Brake Pads Replacement (Front) - Greensboro, North Carolina
Eladio was on time, expedient, and very professional. Very pleased with provided service (brake shoes replacement).

Chris

13 years of experience
107 reviews
Chris
13 years of experience
Hyundai Sonata - Brake Pads Replacement (Front, Rear) - Port Richey, Florida
CHRIS IS THE BEST MECHANIC I HAVE EVER MEET IN MY LIFE. HE IS HONEST AND HE KNOWS HIS STUFF. VERY PROFESSIONAL AND KNOWLEDGEABLE. THANK YOU CHRIS!!!

Pardeep

19 years of experience
587 reviews
Pardeep
19 years of experience
Dodge Caravan - Brake Pads Replacement (Rear) - Fremont, California
Pradeep was early to my appointment and during his work he showed me that I didn’t need rear brake shoes saving me money.He cleaned and serviced the existing shoes and he also adjusted my parking brake cable. Great job. I will always use Your mechanic for any car repairs.

Oreste

12 years of experience
117 reviews
Oreste
12 years of experience
Dodge Avenger - Brake Pads Replacement (Front) - Miami, Florida
Orestes is very professional. He explained what was done to my vehicle and suggested upcoming maintenance needed. Great person

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