Auto User Guide

2020 Lexus ES300H Fuses and Fuse Box | How To Check and Fix

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2020 Lexus ES300H Fuses and Fuse Box | How To Check and Fix

The fuses and fuse box in the 2020 Lexus ES300H are very important for keeping the car’s electrical parts safe from damage that could come from electrical overloads. Most of the time, the switch box is easy to get to inside the car, like under the dashboard or in the engine bay. Before you can check for and fix a blown fuse, you should look in your car’s owner’s manual to find the fuse that goes with the broken part. Carefully take the broken fuse with the provided fuse puller or a pair of pliers and replace it with a fuse of the same amperage. Making sure the fuses are regularly checked and maintained is important for keeping the car’s electrical systems working well, which leads to a smooth and trouble-free driving experience.

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Checking and replacing fuses

If any of the electrical components do not operate, a fuse may have blown. If this happens, check and replace the fuses as necessary.

Checking and replacing fuses

  1. Turn the power switch off.
  2. Open the Fuse box cover.
    1. Engine compartment: type A fuse box
      Push the tab in and lift the lid off.2020 Lexus ES300H-Fuses and Fuse Box-fig 1
    2. Engine compartment: type B fuse box
      Push the tab in and lift the lid off.2020 Lexus ES300H-Fuses and Fuse Box-fig 2
    3. Driver’s side instrument panel
      Push the tab in and remove the lid. Make sure to push the tab in during removal or installation.2020 Lexus ES300H-Fuses and Fuse Box-fig 3
  3. Remove the fuse with the pullout tool.
    Only type A fuses can be removed using the pullout tool.2020 Lexus ES300H-Fuses and Fuse Box-fig 4
  4. Check if the fuse is blown.

Type A and B:
Replace the blown fuse with a new fuse of an appropriate amperage rating. The amperage rating can be found on the fuse box lid.
Type C:
Contact your Lexus dealer.

Type A2020 Lexus ES300H-Fuses and Fuse Box-fig 5

  • Normal fuse
  • Blown fuse

Type B2020 Lexus ES300H-Fuses and Fuse Box-fig 6

  • Normal fuse
  • Blown fuse

Type C2020 Lexus ES300H-Fuses and Fuse Box-fig 7

  • Normal fuse
  • Blown fuse

After a fuse is replaced

  • When installing the lid, make sure that the tab is installed securely.
  • If the lights do not turn on even after the fuse has been replaced, a bulb may need replacement. (P.351)
  • If the replaced fuse blows again, have the vehicle inspected by your Lexus dealer.

If there is an overload in a circuit
The fuses are designed to blow, protecting the wiring harness from damage.

When replacing light bulbs
Lexus recommends that you use genuine Lexus products designed for this vehicle. Because certain bulbs are connected to circuits designed to prevent overload, non-genuine parts or parts not designed for this vehicle may be unusable.

WARNING

To prevent system breakdowns and vehicle fire
Observe the following precautions. Failure to do so may cause damage to the vehicle, and possibly a fire or injury.

  • Never use a fuse of a higher amperage rating than that indicated, or use any other object in place of a fuse.
  • Always use a genuine Lexus fuse or equivalent.
    Never replace a fuse with a wire, even as a temporary fix.
  • Do not modify the fuses or fuse boxes.

NOTICE

Before replacing fuses
Have the cause of electrical overload determined and repaired by your Lexus dealer as soon as possible.

 

FAQs

What is the purpose of fuses in the 2020 Lexus ES300H?

Fuses in the 2020 Lexus ES300H serve to protect various electrical components by breaking the circuit in the event of an electrical overload or short circuit.

How many fuse boxes are there in the 2020 Lexus ES300H?

The 2020 Lexus ES300H typically has two fuse boxes—one in the engine compartment and another inside the cabin.

Where is the engine compartment fuse box located?

The engine compartment fuse box is usually located near the battery.

How do I access the interior fuse box in the 2020 Lexus ES300H?

The interior fuse box is usually located beneath the dashboard on the driver’s side. You may need to open the driver’s side door and remove a cover to access it.

What tools are required to check and replace fuses?

A fuse puller or a pair of needle-nose pliers can be used to remove and replace fuses. It’s also helpful to have a flashlight for better visibility.

How can I identify a blown fuse?

A blown fuse often has a visibly broken wire or a discolored appearance. Use the owner’s manual or fuse box cover to identify which fuse corresponds to the malfunctioning component.

What type of fuses does the 2020 Lexus ES300H use?

The vehicle may use mini blade fuses or other types.

Can I visually inspect fuses without removing them?

Yes, you can visually inspect fuses without removing them. However, it’s more accurate to remove and check each fuse individually.

How do I check a fuse with a multimeter in the 2020 Lexus ES300H?

Set the multimeter to the continuity or resistance setting. Touch the probes to both ends of the fuse. If the multimeter shows continuity, the fuse is functional.

What should I do if I find a blown fuse of the 2020 Lexus ES300H?

Replace the blown fuse with a new one of the same amperage rating. Use the spare fuses provided in the fuse box.

Are there any common issues with the 2020 Lexus ES300H fuses?

Common issues include blown fuses due to electrical faults, short circuits, or overloading. Regularly check and replace fuses to avoid electrical problems.

Can I use a higher amp fuse to replace a blown one?

No, it’s not recommended. Always replace a blown fuse with one of the same amperage rating to prevent damage to the electrical system.

How can I prevent fuse-related issues in my Lexus ES300H?

Avoid overloading the electrical system, and address any electrical issues promptly to prevent damage to fuses.

Are there any recalls related to the 2020 Lexus ES300H fuses?

Check with the manufacturer or visit the National Highway Traffic Safety Administration (NHTSA) website to see if there are any recalls related to the vehicle’s fuses.

If I can’t identify or fix the issue with the fuses, what should I do?

If you’re unable to identify or fix the issue with the fuses, it’s advisable to consult a professional mechanic or contact the Lexus dealership for assistance.

View Full PDF: 2020 Lexus ES300H Owner’s Manual | Auto User Guide

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