Where is the flasher relay located?

The flasher relay, also known as the turn signal relay, is a crucial component in the electrical system of a vehicle that controls the operation of the turn signal lights. Its location can vary depending on the make and model of the car, but it is typically found in one of a few common places.

Common Locations of the Flasher Relay

• Under the dashboard: The flasher relay is often located under the dashboard, near the steering column or fuse box. This is a common placement as it keeps the relay close to the turn signal switch and other related electrical components.


• In the fuse box: Many vehicles have the flasher relay integrated into the main fuse box, which is usually located in the engine bay or under the dashboard.


• In a separate relay box: Some cars have a dedicated relay box or panel that houses the flasher relay, along with other relays and fuses. This box is typically found in the engine bay or under the dashboard.

Knowing the exact location of the flasher relay in your vehicle can be helpful when troubleshooting issues with the turn signals, such as a blinking light or a complete failure of the turn signals to function.

Identifying the Flasher Relay

The flasher relay is usually a small, rectangular or square-shaped component that is easily identifiable in the vehicle's electrical system. It may be labeled with the term "flasher" or "turn signal" on the relay itself or in the vehicle's owner's manual or wiring diagram.

If you're unsure of the location of the flasher relay in your car, consult your owner's manual or search for a wiring diagram specific to your make and model. This will provide the most accurate information to help you locate and identify the correct component.

How to fix a blinker that is blinking really fast?

To fix a fast-blinking turn signal, you most likely need to replace the burnt-out bulb on the side that is flashing quickly. If that doesn't work, inspect the socket for corrosion, clean it if necessary, or replace the turn signal flasher relay. For modern cars or if you installed LED bulbs, the issue might be caused by the low power draw of LEDs, requiring a replacement with an LED-compatible relay or the installation of inline resistors. 
1. Replace the bulb 

• Why: A burnt-out bulb is the most common cause of fast blinking because it changes the resistance in the circuit. 
• How:
  • Activate the turn signal to identify which side is flashing fast. 
  • Find the bulb by locating the turn signal assembly, usually near the headlight. 
  • Remove the assembly by opening the hood or trunk and removing any fasteners. 
  • Remove the old bulb by twisting it counterclockwise and insert the new one. 
  • Important: Avoid touching the glass of the new bulb with your bare hands, as oils and salt can cause it to burn out prematurely. 

This video demonstrates how to replace a burnt-out turn signal bulb: 59sThomas of All TradesYouTube · Sep 28, 2023
2. Inspect and clean the socket 

• Why: Corrosion or carbon buildup on the bulb or inside the socket can cause a poor connection.
• How:
  • Carefully remove the bulb and examine both the bulb's prongs and the inside of the socket for any signs of corrosion (green or blue residue) or damage.
  • If you find issues, clean the socket using a contact cleaner and a small, soft-bristled brush.
  • Install a new bulb and see if the flashing speed returns to normal. 

3. Replace the flasher relay 

• Why: On older cars, the flasher relay is a separate component. On newer cars, it's often integrated into the fuse block. If the relay is faulty, it can cause the fast blinking.
• How:
  • Locate the relay (check your vehicle's manual if unsure).
  • Purchase a compatible replacement relay.
  • Swap the old relay with the new one and check if the blinking speed has normalized. 

4. Address LED hyperflashing 

• Why: LED bulbs use much less power than standard bulbs, and the car's original relay may not be designed for this lower load, interpreting it as a burnt-out bulb. 
• How:
  • Replace the existing flasher relay with an LED-compatible one. 
  • Alternatively, you can use an inline load resistor kit, though this requires more complex wiring and can potentially damage the vehicle's wiring if done incorrectly. 

5. Check wiring and other issues 

• Why: Although less common, a fast-blinking turn signal could indicate a more complex wiring problem or a faulty ground connection. 
• How:
  • If the above steps don't work, have a mechanic inspect the wiring and connectors for any damage or loose connections. 

You can watch this video to learn how to diagnose other potential issues like faulty wiring: 46s1A Auto: Repair Tips & Secrets Only Mechanics KnowYouTube · May 18, 2020

What does a turn signal relay look like?

And there's a little tiny tab on each side. And as the electricity flows through the tab it bends. And it makes a connection between the two tabs.

How much does it cost to replace a flasher relay?

A flasher relay replacement typically costs between $60 and $120 at a professional mechanic, with the part costing around $30-$60 and the rest going to labor. DIY replacement is cheaper, with the part alone costing about $15-$60, though it can be higher depending on the part and vehicle. 
This video explains how to replace the flasher relay and provides an estimate of the cost: 1mMaxTheCarGuyYouTube · Jul 17, 2024
Cost breakdown

• Parts cost: $15–$60 for the relay itself. Some high-quality or specific OEM parts may cost more, while aftermarket options can be as low as $15. 
• Labor cost: Approximately $30-$60 when performed by a mechanic, but this can vary depending on your vehicle and location. 
• Total cost:
  • DIY: The cost of the part only, around $15–$60. 
  • Professional: A total of $60–$120, including parts and labor. 

Factors that influence the cost

• Vehicle: The specific make and model of your car can affect the cost of the part and the complexity of the labor. 
• Part quality: The price of the relay will vary depending on if it's an OEM (original equipment manufacturer) or an aftermarket part. 
• Labor rates: The hourly rate charged by the mechanic in your area will influence the final price. 
• Complexity: Some vehicles may require significant disassembly of the dashboard, increasing labor time and cost. 

How to save money

• Do it yourself: Replacing the flasher relay is often a straightforward DIY task that can save you labor costs. 
• Shop for parts: Compare prices for aftermarket or generic relays from different retailers before buying. 
• Get multiple quotes: If you're having a shop do the work, get estimates from a few different mechanics to compare labor costs.

What are the symptoms of a bad flasher relay?

Symptoms of a bad flasher relay include turn signals or hazard lights not working at all, flashing too fast or too slow, or staying on solid instead of blinking. Other signs can include no clicking sound, dim lights, or related electrical issues in other systems on some vehicles.
 
Common symptoms

• No flashing or lights: The most common sign is that the turn signals or hazard lights will not turn on at all when you use the switch. 
• Flashing too fast: A rapid blinking rate often indicates a burnt-out bulb on that side, but a faulty relay can also cause this. 
• Flashing too slow or erratically: An inconsistent or abnormally slow blinking can be a sign of a failing relay. 
• Lights stay on solid: If the turn signal light stays on solid without blinking, it's a strong indicator that the relay has failed and is stuck in the "on" position. 

Other potential symptoms

• No clicking sound: A bad relay may not produce the usual clicking sound when the turn signals are activated. 
• Dim lights: The lights may appear dimmer than usual before failing completely. 
• Other electrical problems: In some vehicles, a failing relay can affect other lights or electrical components, such as headlights or dashboard lights. 

How to troubleshoot

• Check bulbs first: A burnt-out bulb is a very common cause of fast flashing, so it's a good first step to check your bulbs before replacing the relay, notes LiveAbout and this YouTube video. 
• Consult the owner's manual: Your car's manual can help you locate the flasher relay, which can be in different places depending on the model. 
• Listen for clicks: The normal clicking sound of the flasher relay is a sign that it is working. If there is no sound, or an unusual sound, it points to a problem with the relay itself or another electrical component. 
• Test or replace: If the bulbs are good, the next step is to check the relay. You can often replace it with a new one to see if the problem is resolved, says LiveAbout.