How do I change my turn signal indicator?
If you’re dealing with a blown exterior turn signal bulb or a faulty dashboard turn signal indicator, you’ll typically either swap the exterior bulb or troubleshoot the dash light and related wiring. This guide lays out practical steps for both scenarios so you can diagnose and fix the issue safely.
Turn signals are a fundamental safety feature that communicate your intentions to other drivers. The exact method to change the indicator depends on your vehicle’s make and model. Some cars use replaceable bulbs for the exterior signals, while many newer models rely on sealed LED modules that aren’t user-serviceable. Below are straightforward, general procedures for both the exterior bulb and the dashboard indicator, with notes where vehicle-specific differences apply.
Exterior turn signal bulb replacement
What you’ll need
Common bulb types include 1156/1157, 3157, 7443, or W5W, but bulb types vary by model. Some cars use dedicated LED assemblies that cannot be replaced bulb-by-bulb. Gather the correct replacement bulb and basic tools such as gloves, a screwdriver, and trim removal tools if needed. Always consult your owner’s manual to confirm the exact bulb type and access procedure for your vehicle.
Access points vary by car: some require removing a bumper cover or wheel well liner, while others permit access from the engine bay or inner fender area. The exact steps depend on your make and model.
Follow these steps to replace the exterior turn signal bulb on most cars:
- Park on a level surface, turn off the engine, and engage the parking brake. If you’re working around the electrical system, disconnect the negative battery terminal to reduce the risk of shock or short circuits.
- Gain access to the turn signal bulb housing. This may involve removing a trim piece, a portion of the wheel well liner, or the headlight/bumper assembly. Check your manual for your vehicle’s specific access point.
- Detach the bulb socket from the housing by twisting it counterclockwise or releasing a retaining clip, depending on design.
- Carefully remove the old bulb. Note its orientation so you can install the new one the same way.
- Install the new bulb into the socket, then reattach the socket to the housing. If you touch the glass with bare hands, wipe it with a lint-free cloth or wear gloves to prevent oils from shortening bulb life.
- Reassemble any trim or covers you removed, ensuring all fasteners and seals are secure.
- Test the signal by turning on the left and right indicators and the hazard lights to confirm proper operation.
Conclusion: If the exterior bulb lights up but the signal still doesn’t function correctly, check the fuse, flasher relay, or wiring. Some vehicles use sealed LED modules that require professional replacement if the bulb itself isn’t removable.
Dashboard indicator troubleshooting
What you’ll need
Tools and supplies can include a fuse tester, a basic multimeter, and the vehicle’s manual for fuse diagrams. Some dashboards use replaceable bulbs in the instrument cluster, while many modern cars use LED indicators that are not serviceable by the owner. If your vehicle uses a serviceable bulb in the dash cluster, you may be able to replace it; otherwise, consult a dealer or qualified technician for cluster or module work.
Notes before you start: the steps below cover common, user-accessible checks. In many newer vehicles, the dash turn signal indicator is part of a sealed instrument cluster or controlled by a body control module, which may require specialized tools or professional service.
- Check the relevant fuses for the turn signals and the dash indicator. Locate the fuse box, consult the diagram in your manual or on the fuse panel, and replace any fuse that appears blown.
- If the external signals flash normally but the dash indicator is dim or not lighting, inspect the instrument cluster wiring and connectors behind the dash. Look for loose, corroded, or damaged connectors.
- If the indicator bulb in the cluster is replaceable on your model, carefully access the cluster and replace the bulb following the manufacturer’s guidance. Note that many modern clusters use LEDs that aren’t user-serviceable; replacing the bulb may not be possible.
- Use a diagnostic scanner or code reader to check for fault codes related to the turn signal circuit or the body control module. Clear codes after addressing identified issues and retest the indicators.
- If the dash indicator still behaves erratically or remains dark after these checks, consider professional service. Faults in the instrument cluster, BCM, or software may require dealer-level diagnostics or replacement.
Conclusion: Dashboard indicator problems are frequently tied to fuses, wiring connections, or the instrument cluster/module. If basic checks don’t resolve the issue, professional diagnostic and possible component replacement may be necessary.
Summary
Changing your turn signal indicator generally means either replacing a burnt exterior bulb or diagnosing and addressing issues with the dashboard indicator. Start with the simplest path: replace the exterior bulb if accessible and verify operation; if the dash indicator remains faulty, check fuses and wiring, then assess whether the instrument cluster or control module needs service. Always prioritize safety, consult your owner’s manual for model-specific instructions, and seek professional help if you’re unsure about accessing the dashboard or disassembling components.
Can you get pulled over for a turn signal out?
Yes. Lights, especially turn signals, are important and you will get pulled over eventually.
How much does it cost to change a turn signal switch?
Professional signal switch replacement typically costs between $150 and $400 in labor, and the price of the part can range from under $50 to more than $1,000 depending on what you drive.
Can you replace an indicator light yourself?
On some cars, replacing indicator bulbs is easy. You just open the bonnet, reach behind the headlight, and pop the old bulb out. On others, it's a bit of a pain. You might need to remove part of the headlight, a cover, or even the bumper just to get to the blinker bulbs.
Can I change my own turn signal?
Yes, replacing turn signal bulbs is a DIY-friendly task that can be done using basic tools. What are the signs that my turn signal bulb needs replacement? Signs include a blinking signal at an irregular pace, a bulb that doesn't light at all, or a visibly dim or discolored bulb.
