The 2016 Toyota Highlander has a complex electrical system managed by multiple fuse boxes. Understanding their locations and diagrams is crucial for troubleshooting electrical issues. This guide provides a comprehensive overview of all fuse box locations and their corresponding diagrams for the 2016 Toyota Highlander. We’ll cover the interior fuse panel, engine compartment fuse panels, and additional relays.
Fuse Box Locations and Diagrams
The 2016 Highlander features four distinct fuse boxes:
Interior Fuse Panel
Located on the driver’s side, under the dashboard and to the left of the steering wheel, this panel houses fuses for various interior components.
Engine Compartment Fuse Panel
This panel is situated in the engine compartment, usually near the battery. It contains fuses primarily responsible for engine-related functions.
Additional Relays in Engine Compartment
Located adjacent to the engine compartment fuse panel, this section houses relays that control high-current devices.
Engine Compartment Fuse Panel No. 2
This secondary engine compartment fuse panel is typically found near the firewall.
Understanding the Fuse Box Diagrams
Each fuse box diagram includes a table listing the fuse number, amperage rating, and the corresponding circuit it protects. For example, a 10A fuse labeled “TAIL” protects the tail lights circuit.
Interior Fuse Box Details
| Fuse | Amperage | Circuit Description |
|---|---|---|
| 1 | 5A | Instrument Panel Lights |
| 2 | 10A | Tail Lights |
| 3 | 5A | Engine Control Unit (ECU-ACC) |
| … | … | … |
Engine Compartment Fuse Box Details (Partial)
| Fuse | Amperage | Circuit Description |
|---|---|---|
| 1 | 7.5A | Power Outlet No. 4 |
| 2 | 15A | Mirror Heater |
| 3 | 25A | Sunshade |
| … | … | … |
Engine Compartment Fuse Panel No. 2 Details (Partial)
| Fuse | Amperage | Circuit Description |
|---|---|---|
| 1 | 10A | Heated Steering Wheel |
| 2 | 15A | Rear Seat Heater |
| 3 | 15A | Front Seat Heater (Left) |
| … | … | … |
Importance of Fuse Box Diagrams
Fuse box diagrams are invaluable for diagnosing electrical problems. A blown fuse can cause various malfunctions, from a non-functioning light to a more serious issue. By consulting the diagram, you can quickly identify the faulty fuse and replace it, restoring functionality. Always use the correct amperage replacement fuse to prevent potential damage to the electrical system. This guide provides a starting point for understanding the 2016 Toyota Highlander’s fuse boxes. Consult your owner’s manual for the complete and most accurate information. Remember, safety first! Always disconnect the negative battery terminal before working with any fuse box.
