The fourth-generation Toyota Sienna (Model Code: XL40), introduced in 2020 and continuing through 2026, marks a significant evolution in Toyota’s minivan lineup. Designed exclusively as a hybrid, it blends family-focused versatility with advanced fuel efficiency and modern technology. With a bold exterior, a spacious interior, and available all-wheel drive, the XL40 Sienna is a top contender in the minivan segment.
In this article, you will find fuse box diagrams for the Toyota Sienna, covering model years 2020, 2021, 2022, 2023, 2024, 2025, and 2026. These diagrams help identify the location and function of each fuse and relay used in the vehicle’s electrical systems.
What’s Included:
Fuse Box Diagrams – Clear, detailed layouts to help you locate and identify fuses and relays.
Fuse Panel Locations – Step-by-step guidance to find the fuse boxes inside the cabin and engine bay.
Fuse Assignments – Comprehensive descriptions of each fuse’s purpose, ideal for diagnostics and troubleshooting.
Whether you’re replacing a blown fuse, tracking down an electrical issue, or performing routine maintenance, this guide provides the essential information to keep your Toyota Sienna (2020–2026) in peak operating condition.
(DCM) Data communication module (telematics system)
In the upper part of the box, there are fuses responsible for the electric glass lifters and the electric drive of the seats.
Some additional 30A fuses can be mounted on the side of the fuse box, e.g. electric seat actuators and electric window lifters. An additional fuse and relay box is also installed in the luggage compartment in the passenger compartment.
Engine compartment
Fuse box location
Under the bonnet in the engine compartment, the fuse and relay box is located on the left side, also covered with a protective cover.
Fuse box diagram
Assignment of the fuses in the Engine Compartment
Premium fuse data
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