Answer
Feb 05, 2025 - 08:06 AM
On a 2010 Toyota Highlander, the high beam relay is typically located in the engine bay fuse/relay box. Here’s how to find it:
1. Under-Hood Fuse/Relay Box (Main Location)- Open the hood and locate the main fuse/relay box near the battery on the driver’s side.
- Look at the diagram inside the fuse box cover to identify the "HEAD HI" or "HEADLIGHT HIGH" relay.
- Some Highlander models may have an additional relay module inside the cabin, near the driver’s footwell.
- Check behind the lower dash panel or near the steering column fuse box.
- If a separate relay isn’t found, the high beams may be controlled by the integration relay or BCM, located under the dashboard.
- In this case, a Toyota diagnostic tool may be needed for troubleshooting.
- Listen for Relay Clicks: Turn the high beams on/off and listen for clicking in the fuse box.
- Swap Relays: If you suspect a faulty relay, try swapping it with another identical one.
- Check Fuses: The "HEAD HI" fuse (typically 10A–15A) may be blown.
