How to Replace Your Turn Signal Relay in Cars

by Contributing Writer; Updated June 12, 2017

Volkswagen car has designed their cars to make most minor repairs as simple as possible. This is a wonderful thing for the home mechanic but can end up being more expensive. The turn signal flasher relay is part of the emergency hazard flasher. If you have the flasher go bad on your turn signals, just replace the emergency flasher unit and your Volkswagen car is on the road with functioning turn signals.

Under The Hood:

 How to Replace Your Turn Signal Relay in a Toyota Camry

Check your turn signal lights. When one turn signal light goes bad, it will cause the circuit to appear that the flasher is going bad. Replace any bad bulbs that are bad and retest your turn signals.

Locate the turn signal and hazard flasher relay. It is located under the driver's side dash below and behind the fuse box. Remove the cover of the fuse box. Using a screwdriver, remove the screw holding the fuse box in place. Remove the fuse box and locate the flasher relay underneath.

Remove the bad flasher and replace with the new flasher. Reposition the fuse box and screw the holding screw back in. Replace the fuse box cover.

Start the Camry and test each of the turn signals and the flashers.

 How to Replace Your Turn Signal Relay in a Toyota Tacoma

Check the light bulbs on each of the four corners of the Truck. If one bulb goes bad it will give the symptoms that the flasher may be going bad. Replace any bulb that has burned out and then recheck your turn signals to see if they work again. If not, then proceed to change the flasher.

Find the interior fuse box. It is located on the lower dash panel under the steering column on the driver's side of the truck. Remove the cover of the fuse box and using a screwdriver remove the screw that holds it in place.

Locate the turn signal/hazard flasher behind the fuse box and remove the bad unit. Replace the flasher with the new one, set position the fuse box with the screw and replace the cover.

Start the Tacoma and check each of the turn signals that they work properly. Also check the hazard lights since the relay replaced operates them too.

Items you will need

  • Screwdriver

  • Fuses

  • Replacement flasher for your year of Tacoma

  • Replacement bulbs

 How to Replace Your Turn Signal Relay in a Kia Spectra

Peer underneath the steering wheel column and near the brake pedal to locate the relay panel. In most Kia Spectra's, it's actually on the steering column near the brake pedal. However, it can be on the left side foot well on the driver's side of the car, as well.

Use a screwdriver to remove the relay panel from the Kia Spectra. You need a Phillips head screwdriver to remove it successfully. Be careful during the removal as the panel is plastic and too much torque can strip the panel connections.

Check the diagram on the backside of the relay panel to locate the position of the turn signal relay. If there isn't a diagram, start at the top right hand corner and moving down, use trial and error to discover which one is the turn signal relay. Alternately, if you have an owner's manual, you can see if the relay is indicated in there.

Remove the old turn signal relay carefully and replace it with a new one. Make sure you don't damage any of the other fuses or relays in the box during the removal.

Switch on the turn signal to verify it works with the new relay. If it doesn't work, check that the relay is securely in place. Otherwise, if it works, replace the relay panel and you're finished.

Items you will need

  • New turn signal relay

  • Screwdriver

 How to Replace Your Turn Signal Relay in a Pontiac Grand Prix

Use a flashlight to locate the relay panel on the Pontiac Grand Prix. The panel should be on the left side of the steering wheel column above or to the left of the brake pedal.

Take a screwdriver and remove the relay panel. You'll need a Phillips head screwdriver to remove it successfully. Be careful when you remove the panel, as its plastic construction makes it brittle and prone to breaking. Put the screws in a safe place, so you don't lose them.

Look on the underside of the relay panel to locate the exact position of the turn signal relay. There should be a diagram showing a chart with each relay labeled. If not, the turn signal relay is usually in the upper right hand corner of the relay box.

Remove the broken turn signal relay and replace it with the new one. Make sure you're careful while removing and replacing the relay. You can damage the new turn signal relay and the relays near it, if you use too much force.

Activate the turn signal to make certain it works properly after the relay replacement. If not, check to be sure you installed the relay correctly and securely.

Put the relay panel back in place and dispose of the old turn signal relay.

Items you will need

  • Flashlight

  • Turn signal relay

  • Screwdriver

 How to Replace Your Turn Signal Relay in a Hyundai Sonata

Get down underneath the steering wheel and locate the relay or fuse box panel. In most year models of the Hyundai Sonata, it's located toward the bottom of the steering column.

Use a screwdriver to open the panel box. The panel will either have screws to remove it and in which case, you'll need a Phillips head screwdriver. If the panel has no screws present, use a flathead screwdriver to pry open the panel.

Look on the diagram on the bottom side of the panel lid to locate the turn signal relay switch. If there isn't any label, it should be at the top right hand corner of the panel box. Without the label, you may need to perform some trial and error testing to find the appropriate turn signal relay or consult your owner's manual, if you have one.

Extract the broken turn signal relay from the box and replace it with a new one. Be careful when you remove the old one, as you can damage the other items in the box, if you aren't careful.

Verify that the new turn signal relay works and then put the relay panel back into its original position.

Items you will need

  • Turn signal relay

  • Screwdriver (flathead or Phillips)

 How to Replace Your Turn Signal Relay in a VW Beetle

Aim the small extension nozzle from the can of contact cleaner or WD40 at the base of the turn signal arm and squirt a small amount of oil. Operate the signal arm up and down for about a minute to work the oil into the contacts. It will clean any dirt or residue from the contacts.

Locate the hazard light switch on the dashboard near the center and above the console. Pull the hazard lights switch out and then continue pulling firmly until it releases and pulls through the opening in the dashboard. The unit is a combination hazard light switch, hazard light flasher, turn signal flasher and turn signal relay. It certainly is possible that you have observed problems that could be due to one or more of the functions of this one unit.

Obtain a replacement hazard light switch for your specific year and model Beetle. Place the replacement switch back into the opening in the dashboard and press it in place. Remember to press firmly so that the switch seats securely in the flasher holder in the back of the dashboard.

Start the Beetle. Check each set of lights to make sure that they work properly. In particular, check the turn signals and hazard lights. Make sure that when you turn the switch, they activate and blink.

Items you will need

  • Contact cleaner

  • New replacement hazard flasher switch

 How to Replace Your Turn Signal Relay in a Hyundai Santa Fe

Find the relay box panel on the Hyundai Santa Fe. In most Santa Fe's, the panel is on the lower part of the steering column above the brake pedal.

Grab a screwdriver and remove the relay panel. You will either need a Phillips head screwdriver, if the panel has screws or a flat head, if the screws are absent. Either way, be sure to remove the panel carefully, as it's made of a breakable plastic.

Look on the underside of the panel lid at the relay and fuse diagram to locate the turn signal relay. The list may contain abbreviations, so examine the list for a comparable abbreviation. If there isn't any list, the turn signal relay is usually near the top right hand corner of the box.

Remove the faulty turn signal relay and replace it with the new one. Make certain to remove and replace this item carefully, as you can damage the relay or the parts near it, if you aren't alert.

Check to see if your turn signal works with the new relay installed. If not, check to make sure the relay is securely in place and you replaced the right one. If it works, replace the relay panel with the screwdriver.

Items you will need

  • New turn signal relay

  • Screwdriver

 How to Replace Your Turn Signal Relay in a Saturn VUE

Open the hood and locate the relay panel box on the Saturn VUE. You can find it on the driver's side near the front quarter panel.

Unfasten the panel box and look on its underside for the relay diagram. You may need to use a screwdriver to open the panel, but in most models, it just pops off. However, don't use too much force, because it's plastic and can break.

Remove the defective turn signal relay. There's a small clip, which holds the relay in place. This clip is somewhat fragile, so you never want to pull or twist the relay when removing it.

Install the new turn signal relay in the same place as the old one. Be careful on both removal and replacement that you don't damage any of the other parts near the turn signal relay.

Check to make sure the turn signal functions properly. If so, replace the panel cover and close the hood. If not, verify the turn signal relay installation. Should the problem persist, it's most likely a larger electrical problem with your Saturn VUE.

Items you will need

  • Screwdriver

  • Turn signal relay

 How to Replace Your Turn Signal Relay in a Nissan Sentra

Use a flashlight to locate the relay panel underneath the steering column and near the center console. On some models of the Nissan Sentra, there may not be a panel cover. On these models, it's simply open underneath the steering column.

Remove the relay panel cover with a screwdriver, if you have a cover. On most models, you'll need to use a Phillips head screwdriver to unfasten the panel. Be sure you put the screws in a safe place, so you don't lose them.

Look on the underside of the panel cover to find the location of the turn signal relay in the Nissan Sentra. There should be a diagram there, which details the position of all the relays and fuses.

Take out the old turn signal relay and replace it with the new one. Be sure you perform both removal and installation carefully, as you can damage the new relay or the parts near it, if you're too forceful.

Check the turn signal on the Nissan Sentra to verify the replacement fixed the problem. If it still doesn't work, verify that you seated the relay properly. Should it work correctly, put the relay panel cover back in place and dispose of the old turn signal relay.

Items you will need

  • Flashlight

  • Screwdriver

  • Turn signal relay

 How to Replace Your Turn Signal Relay in a Oldsmobile Alero

Grab a flashlight and locate the relay panel in your Oldsmobile Alero. It should be underneath the steering column and above the brake pedal. On some earlier models, there may not be a panel cover.

Use a screwdriver to remove the relay panel and look on the underside of that panel for a relay diagram. This diagram should tell you exactly where the turn signal relay is located. Also, make sure you put the screws in a safe place, so you don't lose them.

Remove the defective turn signal relay and put the new one in the same position. There may be a clip, which holds the turn signal relay in place. Release this clip before you remove the relay. Don't use too much force during removal or installation, as you could damage the new relay or other parts in the vicinity.

Check that the turn signal works by turning on the electrical system and activating the turn signal. If there's still a problem, verify that you installed the relay correctly.

Put the relay panel back into place and dispose of the old turn signal relay.

Items you will need

  • Flashlight

  • Screwdriver

  • Turn signal relay

 How to Replace Your Turn Signal Relay in a Honda CR-V

Check the turn signal lights again. Go around the CR-V and visibly check if there are any turn signal lights out. If there are any bulbs out, replace them with the proper bulbs for your year of CR-V. The other cause that is easily checked is to see if a fuse has blown for the turn signal circuit. Replace any burned out fuses you find.

Locate the interior fuse and relay box. It is located under the dash on the driver's side of the car. Look for the fuse box between the wheel well and the steering wheel. This fuse box holds fuses for most of the systems of the CR-V and a number of the relays.

Remove the cover of the fuse box and put your hand up in the area of the relays. Activate the turn signals and feel for the relay with mechanical clicking. This will be the turn signal relay.

Take out the bad relay from the fuse box and replace it with a new one. Replace the cover of the fuse box and start the CR-V. Go around the car once more and check all the turn signals to make sure they all work as expected.

Items you will need

  • Replacement turn signal relay

  • Replacement bulbs

  • Replacement fuses

 How to Replace Your Turn Signal Relay in a Lincoln Navigator

Locate the electronic module that houses the relays. The Navigator has a set of relays that are all connected in a strip module.

Search for the module above the accelerator pedal under the dash. The module is directly above the visible diagnostic tool connector. The module is a rectangular black box with a snap lid. It will be easier if you remove the module before trying to remove the relay.

Find the metal support that the module mounts onto and slide the module down. Once the module is free of the support, bring it out into the open. When the module is out in the open the lid will be easy to remove.

Remove the turn signal relay and replace it with the new one. Place the lid back on the module and slide it back up the support arm.

Start the Navigator and check all the lights, especially the turn signals.

Items you will need

  • New replacement turn signal relay

 How to Replace Your Turn Signal Relay in a GMC Sierra

Check the turn signal lights for bad bulbs. Replace any bulbs that are bad. Take the cover off the fuse box and locate the fuses that control the turn signal lights. Replace any bad fuses.

Find the access panel on the driver's end of the dash. The cover plate is triangular and underneath it are a set of flashers. Behind the fuse block is where the turn signal flashers are located.

Identify which flasher is for the turn signals. Touch the surface of the flasher and then turn on the turn signal. Feel for the mechanical click that is made when the flasher blinks. This flasher controls the turn signals. Remove the flasher and replace it with a new one.

Reattach the fuse block to the inside of the hole on the end of the dash. Screw the triangular plate back on the end of the dash. Start the truck and check all the turn signal lights. Turn them on and go around the Sierra to make sure that they all light.

Items you will need

  • Replacement flasher

  • Replacement bulbs

 How to Replace Your Turn Signal Relay in a Mercury Cougar

Locate the relay panel on your Mercury Cougar. In the Cougar, it's usually on top of the steering column. You may need to remove the steering column cover in order to gain access to the panel.

Remove the relay panel with a Phillips head screwdriver. On some models of the Mercury Cougar, you won't need the screwdriver as you can simply pull the relay panel off. In either situation, be careful not to use too much force as you can damage the panel.

Look on the underside of the relay panel to make sure you know which relay to remove. There should be a diagram on the underside of the panel. If not, then you need to consult your owner's manual or use trial and error to figure out which relay controls the turn signal.

Take out the potentially defective turn signal relay and replace it with a new one. Be careful when you replace the relay so as not to damage any of the surrounding relays.

Switch on the Mercury Cougar and test to see if the turn signal works. If not, check to make sure you installed the relay securely. Should the problem persist, the culprit may not be the turn signal relay.

Put the relay panel back into place and reinstall the steering column cover.

Items you will need

  • New turn signal relay

  • Phillips head screwdriver

 How to Replace Your Turn Signal Relay in a Nissan Maxima

Grab a flashlight and locate the relay panel that's underneath the steering column of your Nissan Maxima. On some models of the Maxima, you may need to remove the steering column panel to gain access.

Use a screwdriver to remove the relay panel and the steering column, if needed. Be sure that when you remove the screws from the relay panel that you put them in a safe place where they won't get lost.

Look on the underside of the relay panel to determine where the turn signal relay is located within the box. See the Resources section for a picture of a turn signal relay.

Remove the defective turn signal relay and install the new one. You don't need any special tools for the removal, but you must be careful not to damage any other fuses or relays during the removal and replacement.

Check to see if the turn signal is working correctly. Then, use the screwdriver to put the relay panel back into its original position.

Items you will need

  • Screwdriver

  • Flashlight

  • Turn signal relay