Why are my turn signals not working on the right side?

Right-side turn signals failing typically points to a faulty bulb, socket, fuse, or wiring. Start with the simplest checks like bulbs and fuses, then move to wiring and switching diagnostics.

Common causes and quick fixes

Most one-sided failures stem from a few repeat culprits. Here are the main suspects and the remedies you can try safely at home.

• Burned-out bulbs on the right side (front or rear).


• Corroded or loose bulb sockets on the right side.


• Blown fuse or faulty relay related to right-side signals.


• Damaged or frayed wiring or a loose connector on the right-side harness.


• Faulty turn signal switch or stalk (less common if only the right side fails).


• Grounding issue on the right side (poor ground can cause dim or non-working lights).

Most of these fixes are straightforward: replace bulbs, reseat connectors, replace fuses, or clean grounds. If you’re not sure, consult a mechanic.

How to diagnose the problem

Use a systematic approach to confirm the exact cause before replacing parts.

1. Check both front and rear right bulbs with the hazard lights to see if any bulb is out; replace as needed. Note if both bulbs on the right side fail or just one.


2. Inspect the fuses and relays associated with the right-side turn signals, usually marked Turn Signal or Lighting; replace blown fuses and test again.


3. Inspect the right-side bulb sockets for corrosion or moisture; unplug, clean, and reseat the bulbs; check for a tight ground connection.


4. Test the electrical ground on the right side by inspecting the chassis ground near the light assemblies; ensure a solid metal-to-metal connection.


5. Evaluate the turn signal switch and the vehicle’s body control/module if the signals are controlled electronically; signs include odd blinking rates or non-functioning signal when other functions still operate.


6. If the problem persists, check the wiring harness for damage, chafing, or disconnected wires; use a multimeter to verify continuity and voltage supply to the right-side lights.

By following these steps, you typically identify the culprit. If the diagnosis points to a more complex issue like a module fault, a professional diagnostic with manufacturer-specific tools is advisable.

Prevention and maintenance

Regular checks can prevent future right-side signal failures. Here are practical tips:

• Periodic bulb inspection and replacement of any signs of dimming or flicker.


• Keep sockets clean and free of corrosion; check for moisture seals around the light assemblies.


• Inspect fuses and relays as part of routine electrical checks, especially after battery/disconnect events or after wiring work.


• Ensure wiring harnesses are secure and protected from road debris and heat; address any chafing promptly.

Regular maintenance reduces the chance of a right-side signal failing unexpectedly and helps maintain overall vehicle signaling reliability.

Professional help and warranty considerations

If you’ve tried the basic checks and the right-side signals still fail, or if you notice fault codes from the vehicle’s computer, seek professional service. Some issues, like BCM/ECU faults or controlled light modules, require specialized diagnostic tools. If your vehicle is still under warranty, contact an authorized service center to avoid voiding coverage.

Summary

Right-side turn signals not working typically come down to bulbs, sockets, fuses, or wiring, with stalk or module issues as possible culprits in newer vehicles. Start with a quick bulb and fuse check, then inspect sockets and grounds, and escalate to switch or computer-controlled components if needed. With a methodical approach, you can identify the problem and determine whether a DIY fix is feasible or professional help is required.

Why is my blinker only working on one side?

The good news is that all of these symptoms point to two possible issues, a bad turn signal relay or a dead bulb. If the signal blinks really fast, you have a bulb out on that side. If it doesn't come on at all or doesn't blink, you'll need to replace your turn signal relay.

Is there a fuse for turn signals?

Yes, most vehicles have a fuse for the turn signals, and checking it is one of the first steps in troubleshooting. If the fuse is blown, you should replace it with a new one of the same amperage, and you can find the specific fuse location by checking your vehicle's owner's manual or the diagram on the fuse box lid.
 
This video demonstrates how to locate and check a turn signal fuse: 1mJoey's GarageYouTube · Jul 31, 2016
How to find and replace the fuse

1. Locate the fuse box: Consult your owner's manual or look for a diagram on the fuse box lid to find the fuse for the turn signals (it might be labeled "Turn Signal," "Hazard," or "T/S"). 
2. Remove the old fuse: Use a fuse puller tool (often included in the fuse box) or a pair of needle-nose pliers to pull the fuse straight out. 
3. Inspect the fuse: A blown fuse will have a broken or burnt-out metal filament inside. A good fuse will have an intact metal wire connecting the two ends. 
4. Replace the fuse: Insert a new fuse with the exact same amperage rating into the slot. The new fuse's numbers should face the same direction as the surrounding fuses. 

This video demonstrates how to replace a blown turn signal fuse: 59sElectrical Car Repair LIVEYouTube · Mar 29, 2020
What if the new fuse blows immediately?
If the new fuse blows right away, there is likely an underlying electrical problem that needs to be diagnosed, such as a shorted wire, a bad turn signal switch, or a faulty flasher relay.

How much does it cost to fix a turn signal switch?

How much does it cost to replace a turn signal switch? DIY replacement can cost $50 to $1,000 or more for parts. Professional repairs typically range from $150 to $400 in labor.

Why is my right side turn signal not working?

It could be a blown fuse, bad relay, faulty wiring, or a worn-out turn signal switch.