Having functioning turn signals in your vehicle is an important safety element every time you drive. But when your turn signals start malfunctioning and flashing randomly or not at all, it likely means the turn signal relay needs replacing.
This small electrical relay activates the blinking of your turn signal lights. Knowing where this component is located and how to replace it can save you the hassle and cost of a mechanic visit.
The turn signal flasher relay sometimes called the hazard flasher relay, is usually in the fuse box, behind the dashboard, or under the hood in the engine bay. Consulting your owner’s manual or an auto parts store can help pinpoint the exact location of your specific vehicle make and model.
Once you’ve found it, verifying a faulty relay is relatively straightforward – non-blinking lights, fast hyperflashing, or clicking noises signal a problem. Replacing the flasher relay involves removing the old one and plugging in an appropriate new replacement.
With the new relay installed, your turn signals should go back to flashing correctly when signaling turns or using your hazard lights. So the next time your turn signals start acting up, check the relay first before assuming a more significant electrical issue. Locating and replacing it yourself can be a quick, easy, and inexpensive fix.
In our guide, you can learn more about finding the flasher relay location to fix any issues. By the end, you’ll better understand how to have a better experience when driving. You’ll also see how to upgrade incandescent to LED bulbs without saying “please help” to a local garage or mechanic. (Read Dodge Ram 1500 Turns Over But Wont Start)
What Is the Turn Signal Relay?
When you use your turn signals, a small electrical component known as the turn signal relay, also known as the flasher relay, your turn signals will blink. The turn signals in your car depend on this crucial part of the electrical system.
When actuated, the relay often breaks the circuit for the signal lights, causing them to flicker on and off. It typically resides behind the dashboard or in the fuse box.
Types of Turn Signal Flashers
There are several different types of turn signal flasher relays, each with their own features and drawbacks:
- DOT flashers – These produce an audible clicking noise and are commonly mounted on the dash panel. They require current to flow to both bulbs, so a burnt-out bulb will cause steady illumination rather than flashing.
- Bimetal flashers – Bimetal relays are current-sensitive and will cease to blink if one bulb fails. Their lifespan is typically shorter than other designs.
- Hybrid flashers – Hybrid units use an electromechanical relay and electronic timing circuitry. This provides a wider operating voltage and temperature range.
- Solid-state flashers – With no moving parts, solid-state flashers have the longest lifespan. Their internal circuit controls timing and switching with no mechanical components.
When replacing your flasher relay, you might upgrade to a solid-state or hybrid model for enhanced longevity and performance. But most standard designs should restore functionality when installed properly. Knowing the differences can help narrow down the optimal replacement part.
Where Is the Turn Signal Relay Located?
The exact location of the turn signal flasher relay can vary depending on the make and model of your vehicle. Here are some of the most common locations to check:
- Fuse box – The relay may be located in the fuse box under the dashboard or under the hood. Check the fuse box lid or manual for a diagram showing its location.
- Behind the dashboard – It may be mounted behind the dashboard near the steering column. You may need to remove trim panels to access it.
- Under the hood – Some vehicles house the relay in the engine bay, often near the battery. Refer to your owner’s manual.
- Lower left of the steering wheel – Some models place the flasher relay right under the dash to the lower left of the steering column.
If you’re unsure where to look, consulting your vehicle repair manual will give you the exact location. Auto parts stores may also be able to look up the info for your specific make and model. (Read 4 Wire O2 Sensor Wiring Diagram Nissan)
How Do I Tell If the Turn Signal Relay Is Bad?
Some signs your turn signal flasher relay may be malfunctioning:
- Turn signals don’t blink or flash. They either stay on solid or don’t light at all.
- Turn signals blink rapidly or slowly. The normal 1-2 second interval is disrupted.
- Clicking noise coming from the relay when operating turn signals.
- Only one side’s turn signals work (left or right). The other side stays solid or inactive.
If you notice these issues, it likely means the relay needs to be replaced.
How Do I Replace the Turn Signal Flasher Relay?
Replacing a faulty turn signal relay is usually a quick and straightforward repair, or if you are changing to LED lights. A quick click on a product link online can take you directly to the site where to find your LEDs.
Locate and remove the old relay.
Refer to your vehicle repair manual to find the exact location. Pull the old black plastic relay out of the electrical connector assembly or unscrew it from its mounting inside the fuse box.
Get an appropriate replacement relay.
Check with an auto parts store to match it to your vehicle’s specs. The new one should plug right in.
Install the new flasher relay.
Insert it into the electrical connector or screw it into place. Ensure during installation; it clicks or seats firmly.
Test the turn signals.
Switch on your hazard lights or signal a few turns. The new relay should restore regular flashing operation.
With the new flasher relay installed, your turn signals should work properly again. Take it slowly and follow all precautions when dealing with your car’s electrical system. Replacing the relay on your own can save time and money compared to a trip to the mechanic. Let us know if the new relay solves your turn signal issues!
Conclusion: Fixing or Changing a Turn Signal Light
Troubleshooting faulty turn signals often leads to a bad flasher relay. This small component manages the electrical signal to make your turn signal lights blink on and off. Before replacing the relay, inspect bulbs, fuses, switches, and wiring.
If you’ve verified the relay is defective, locate it in the fuse box, behind the dash, or under the hood using your vehicle repair manual.
Remove the old relay and get an exact replacement from an auto parts store. Install the new turn signal flasher relay by plugging it in.
Test your LED signal and hazard lights to ensure normal flashing has been restored. With a new relay, your turn signals should work again, providing safe operation and avoiding hazards. Replacing it yourself only takes a few minutes, saving time and money. (Learn How To Use A Beam Torque Wrench)
FAQs
Why are my turn signals not working?
Aside from a bad flasher relay, other causes include burnt-out bulbs, faulty wiring, blown fuses, or issues with the turn signal switch or hazard light switch. Inspect these components first before assuming it’s the relay.
Where is the turn signal relay in a 2001 Ford Focus?
The turn signal flasher relay is located behind the fuse box on the passenger side of the dashboard in a 2001 Ford Focus. Remove the cover on the box to access it.
How do I know if my turn signal relay is bad?
The main symptoms are irregular flashing, no blinking, hyper-flashing, one side not working, and clicking noises coming from the relay. Testing with a multimeter can confirm if the relay is faulty.
Can I drive with a bad turn signal relay?
You can drive with a malfunctioning relay, but it’s not recommended. Non-working turn signals are a hazard for yourself and other drivers. Replace the bad relay as soon as you can. (Read Can A Bad Speed Sensor Cause Stalling)
Why do my hazard lights work but not turn signals?
The flasher relay may activate the hazards normally but not the turn signals. Try replacing the relay first. If that doesn’t fix it, there may be an issue with the turn signal switch.
