The turn signal flasher relay is usually inside a fuse/relay box under the dash or in the engine compartment; in some newer cars it’s integrated into the body control module, so the exact location varies by model.
Common Locations
Here are the most frequent spots where the flasher relay is found across a broad range of vehicles.
- Under the driver’s side dash, in the fuse/relay box near the steering column (often in a kick-panel area).
- In the engine compartment fuse/relay box, sometimes labeled as Turn Signal, Flasher, or TS Relay.
- Behind the glove box or instrument cluster in some models, accessible by removing trim panels.
- In older cars, a small cylindrical or rectangular relay in the fuse panel rather than a separate block.
- In many modern cars, the flasher function is controlled by the Body Control Module or integrated into the combination switch (multifunction stalk), reducing a separate relay.
Knowing these general locations helps you begin the search, but the exact spot varies by vehicle generation and trim level. If in doubt, consult your owner’s manual or a repair guide for your model.
How to Confirm and Access
Follow these steps to locate the flasher relay on your specific model and gain access if you need to test or replace it.
- Check the owner's manual or the fuse/relay diagram for labels such as "Turn Signal," "Flasher," or "TS."
- Inspect both the under-dash (driver’s side kick panel) fuse box and the engine bay fuse/relay box for a relay with a label matching those terms.
- If no separate flasher relay is found, look for the flasher function inside the Body Control Module or inside the multifunction stalk assembly in newer vehicles.
- When you locate a relay, carefully remove and inspect it, or swap it with a known-good relay of the same type to test if the signaling issue resolves.
In models where the flasher is integrated into the BCM or stalk switch, you may not find a removable relay; troubleshooting may require module diagnostics or professional service.
Tips and Next Steps
If your turn signals aren’t flashing properly, the issue could be a faulty flasher relay, a blown fuse, a bad bulb, or a wiring fault. Start with the simplest checks—fuses and bulbs—before swapping relays. When in doubt, consult a professional technician to avoid electrical damage.
Summary
Location varies by vehicle: common spots include the under-dash fuse/relay box, the engine bay fuse/relay box, or less commonly behind dash panels; in newer cars, the flasher may be integrated into the Body Control Module or the multifunction stalk. Use your owner's manual or a repair guide to confirm the exact location, and consider testing with a known-good relay or seeking professional help if needed.