Why is only one turn signal working?
If you've noticed that only one of your vehicle's turn signals is working, there could be a few potential reasons for this issue. In this article, we'll explore the common causes and provide steps to troubleshoot and fix the problem.
Potential Causes of a Single Turn Signal Failure
There are several reasons why a turn signal may stop working, and it's often isolated to just one side of the vehicle. Some of the most common causes include:
- Blown Fuse: A blown fuse in the turn signal circuit can cause one side to stop working. This is often an easy fix, requiring just a replacement fuse.
- Faulty Turn Signal Bulb: If the turn signal bulb on one side has burned out, it will cause that turn signal to not function properly.
- Wiring Issue: A break or short in the wiring harness for the turn signal can disrupt the electrical connection, leading to a single turn signal failure.
- Turn Signal Relay Failure: The turn signal relay is responsible for sending the electrical signal to the turn signal lights. If the relay fails, it can cause one side to stop working.
- Turn Signal Switch Malfunction: The turn signal switch, located on the steering column, controls the turn signal operation. If the switch is faulty, it may only activate one side.
Determining the exact cause will require some troubleshooting, which we'll cover in the next section.
Troubleshooting a Single Turn Signal Failure
To diagnose and fix a single turn signal that's not working, follow these steps:
- Check the Fuse: Locate the fuse for the turn signal circuit and inspect it for any signs of damage or burnout. Replace the fuse if necessary.
- Inspect the Turn Signal Bulb: Visually inspect the turn signal bulb on the non-functioning side. If the bulb is burned out, replace it.
- Test the Wiring: Use a multimeter to check the wiring harness for the turn signal, looking for any breaks or shorts in the circuit.
- Check the Turn Signal Relay: If the fuse and bulb are both good, the turn signal relay may be the issue. Test the relay or replace it if necessary.
- Inspect the Turn Signal Switch: If the above steps don't reveal the problem, the turn signal switch itself may be malfunctioning. Have a mechanic diagnose and replace the switch if needed.
By following these troubleshooting steps, you should be able to identify and resolve the issue with the single non-functioning turn signal on your vehicle.
Why is my turn signal only working on one side?
The most common cause of this problem is a failed turn signal bulb (or loose connection). Flasher relays depend on a certain amount of current flowing through the circuit. If a bulb fails, it results in less current, which results in it not blinking. Some cars have one blinker in front and one in back on each side.
Why won't my left turn signal work?
Burnt-out bulbs are the most frequent issue, but electrical problems like blown fuses, faulty wiring, and corroded connectors are also common. Additionally, a malfunctioning flasher relay can cause the signals to blink erratically or not at all.
How do I know if my turn signal fuse is bad?
Turn Signals Don't Work
This is the most common symptom of a faulty turn signal relay. Once the relay is broken, the lights won't turn on with the switch. On some vehicles, the hazard lights also rely on the turn signal relay, so those lights might also cease to function.
How can you tell if a signal switch is bad?
Common symptoms of a bad turn signal switch include:
- Turn signal lamps don't work at all.
- Only one side of the turn signal lights is working.
- Other car systems don't function properly or at all.
How much does it cost to fix a left turn signal?
$80-$110. The average cost to replace your turn signal bulb is $80 - $110. Pricing may vary based on the type of car you have, as well as the type of (and quality) auto shop that you go to. At NuBrakes, our technicians come to your office or home to do the repair.
Does each turn signal have a fuse?
No there is not a separate fuse for each turn signal.
How do I know if my turn signal relay is bad?
Turn Signals Don't Work
This is the most common symptom of a faulty turn signal relay. Once the relay is broken, the lights won't turn on with the switch. On some vehicles, the hazard lights also rely on the turn signal relay, so those lights might also cease to function.
Is it illegal to drive with a broken blinker?
Headlights, tail lights, and blinkers
Not only can driving without them be dangerous, having non-functional lights is illegal in almost every state. Driving without them could lead to getting pulled over and receiving a ticket.
Can I drive if my blinker is not working?
Because, driving without functional turn signals is unsafe and illegal in most places. And Tracy's Tire Pros professionals can diagnose and fix the issue, ensuring your turn signals work properly again.
How much does it cost to fix a broken blinker?
The average cost to replace your turn signal bulb is $80 - $110. Pricing may vary based on the type of car you have, as well as the type of (and quality) auto shop that you go to. At NuBrakes, our technicians come to your office or home to do the repair.
