Owners of other Toyota and Lexus vehicles such as the Camry, Corolla, Highlander, Prius, Avalon, C-HR, GR86, Venza, Sienna, Sequoia, 4Runner, IS 250, IS 300, IS 350, ES 350, GS 350 and GX 460 may also find these DIY instructions to be helpful.

The 2019 Toyota RAV4 is equipped with "low profile" mini blade electrical fuses.

The first two steps are to open the hood and move to the right (driver) side of the engine bay.

The primary (or "main") fuse and relay box is situated just behind the driver side headlight assembly and to the right of the 12V automotive battery.

Push in the release tab on the front edge of the fuse box cover to release the first retaining clip.

Once all three retaining clips have been released, pull the fuse box cover straight off.

Turn over the fuse box cover to view the fuse and relay location diagram.

There should also be a fuse and relay location diagram in your owner's manual.

There should also be a few spare fuses attached to the underside of the cover.

Move to the left (passenger) side of the engine bay and locate the smaller fuse and relay box situated behind the coolant overflow bottle.

Push in the release tab on the front edge of the smaller fuse box to release the retaining clip.

There is another fuse location diagram on the underside of the smaller fuse box cover.

Pull back on the tab at the rear edge of the fuse panel cover (situated closest to you) to unlock the retaining clip.

Swing open the cover and pull it off the panel.

Pinch the end of the white plastic fuse puller tool to open the jaws.

Place the jaws over the old fuse that you'd like to check or change.

Pull the old fuse straight out of the socket.

If the thin metal strip or "band" in the translucent plastic middle of the old fuse appears to be burnt or broken the old fuse is most likely "blown" and should be replaced.

If the thin metal bar in the center of the fuse appears to be intact, the old fuse is probably still in good working condition.

Since new fuses are so inexpensive, I recommend replacing the old fuse just in case it is blown even if the metal strip appears to be intact.

Push a new "low profile" mini blade electrical fuse of the same amperage rating (e.g. 5A, 10A, 15A, 20 amps, etc.) straight into the socket.

Double check that the new fuse is secure and fully seated in the socket.

Replace the yellow plastic fuse puller tool to the top of the electrical box in the engine bay.

If you'd like to add a hard wired 12V power source for any automotive accessories such as a Bluetooth audio adapter, radar & laser detector, an auxiliary gauge (turbo boost or transmission temperature), a dash camera / dashcam or a GPS navigation unit, you can install an "Add-A-Circuit" Fuse Holder Tap (also known as a piggyback fuse adapter).

If you suspect that a faulty relay is the source of your electrical problem, the easiest way to troubleshoot the problem is to just simply replace the relay with a brand new one of the same amperage rating.

If you have a digital multimeter tool, you could also test the old relay.

To remove an old relay, grasp it with the needle nose pliers or standard pliers and carefully pull it straight out of its socket.

Push the cover down over the top of the housing.

You should feel or hear the three retaining clips "click" securely into place.

Close the smaller fuse box cover on the left side of the engine bay.

First, reinsert the front edge (closer to the front of the vehicle) and swing closed the rear edge (closer to you).

Push on the rear edge to secure the retaining clip.

Test the electrical component that you were having problems with such as the horn, A/C system, stereo system, power windows, power door locks, tail lights, headlights, interior lights, power driver's seat, power tailgate, etc.

If you are still having the same electrical issue, there might be a shorted out wire or the component itself needs to be replaced.

Be sure to write down the fuse change in your vehicle's service records.

For more, please check out all of my 2019-2023 Toyota RAV4 DIY Repair & Maintenance Guides.