Lexus RX 350 Fuse Box and Relay Diagrams - Complete Guide

The Lexus RX 350 is a popular luxury SUV known for its reliability, comfort, and performance. A crucial component of the vehicle's electrical system is the fuse box. Understanding the fuse box diagram is essential for both routine maintenance and troubleshooting electrical issues. This guide will walk you through the Lexus RX 350 fuse box diagram, helping you identify and replace faulty fuses efficiently.

Understanding the Fuse Box

The fuse box in your Lexus RX 350 is a critical hub for electrical circuits. It houses numerous fuses, each safeguarding a particular electrical component in your vehicle. If any electrical unit fails to function, checking the respective fuse is a wise first step.

Location of the Fuse Box

Typically, the Lexus RX 350 features two main fuse boxes. The first is located under the dashboard on the driver's side, while the second is found in the engine compartment. Familiarizing yourself with these locations can save you time during inspections and repairs.

Fuse Box Diagram

Below is a general description of the fuse box layout, including key fuses and their functions. While specific models and years may vary, this serves as a general guide:

• Fuse 1: Controls the radio and infotainment system
• Fuse 2: Responsible for interior lighting
• Fuse 3: Powers the power windows and sunroof
• Fuse 4: Operates the air conditioning system

How to Replace a Fuse

Replacing a blown fuse is a straightforward process, and it involves the following steps:

1. Turn off the vehicle and disconnect the battery.
2. Locate the fuse box and open the cover.
3. Identify the blown fuse using the diagram and a fuse puller.
4. Remove the blown fuse and replace it with a new one of the same amperage.
5. Reconnect the battery and test the replaced circuit.

Common Questions

Regularly checking the condition of your vehicle’s fuses and understanding the fuse box diagram can prevent electrical issues and extend the lifespan of your Lexus RX 350. Always refer to your owner’s manual for specific information related to your model year.