Skip the auto shop - Our mechanics make house calls
  1. Home
  2. Articles
  3. Symptoms of a Bad or Failing Turn Signal Switch

Symptoms of a Bad or Failing Turn Signal Switch

turn signal switch

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:

1. Turn signal indicator continues to blink when the steering wheel returns to the center

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.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
Still not sure about your car's issue?
Diagnose your car
What kind of issue are you experiencing?
Brakes are squeaking
Car is not starting
Car is overheating
Car is shaking (vibrating)
Fluids are leaking
Heating and A/C
Smoke or steam is coming out of the car
Warning light is on
Icon-warranty_badge-02

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

More related articles

Auto Safety Tips
Driving is more than a way to get from point A to point B. Owning and driving a car can also be a highly enjoyable experience. Whether a person is driving...
P0608 OBD-II Trouble Code: Control Module VSS Output "A" Malfunction
P0608 means there is an malfunction in the vehicle speed sensor A control module often due too faulty speed sensor or shorted electrical wiring.
P0684 OBD-II Trouble Code: Glow Plug Control Module to PCM Communication Circuit Range/Performance
P0684 code means there is a failing connection within the Glow Plug Control Module often due too corroded wires and solenoid failures.


Related questions

Q: Headlight Issue

Hello. The daytime running lights are not supposed to function at the same time as the headlights. The daytime running lights are only supposed to come on during the day, to provide additional visibility for daytime driving, independently of the...

Q: My son's honda civic A/C comes on some of the time and does not at other times. It that a wiring issue?

Hello, thank you for writing in. We need to determine what is coming on and what is not. If the air blows but it is warm, you may have low refrigerant. If no air blows at all, and the climate...

Q: Brake light out message

Hello. From what you describe it would appear that your vehicle may be experiencing some sort of electrical issues related to the brake light circuit. If the bulbs are new and functioning correctly then there may be some sort of...