2022 Toyota Tundra Bulb Size Reference Guide

As an ASE-certified master technician, I’ve had my hands on countless trucks, but the redesign of the 2022 Toyota Tundra (the start of the 3rd generation) brought a massive leap in automotive lighting technology. Toyota ditched the old-school lighting architecture and moved heavily toward factory LED systems across all trims. However, depending on whether you have an SR, SR5, Limited, TRD Pro, or Capstone, you might still find a few traditional incandescent bulbs lurking in the turn signals or cargo areas.

If you are looking to upgrade or replace a burnt-out bulb on your 2022 Toyota Tundra, this guide will help you navigate the tricky mix of sealed LED housings and replaceable bulbs.

Quick Reference: 2022 Toyota Tundra Bulb Sizes

Note: The 2022 Tundra utilizes sealed LED assemblies for the main headlights and taillights on most trims. If an LED fails in a sealed unit, the entire housing must be replaced.

LED vs Halogen Upgrade Considerations

Because the 2022 Tundra comes with incredibly bright factory LED headlights, the remaining incandescent bulbs (like the reverse lights, license plate lights, and base-model turn signals) can look a bit dull and yellow by comparison.

When upgrading these remaining halogens to LED, keep the following in mind:

• Hyperflash and CANBUS: If you have an SR or SR5 with incandescent turn signals (7443 front / 7440 rear), swapping to an LED bulb will cause "hyperflashing" (rapid blinking). The Tundra’s computer will think the bulb is burnt out due to the low power draw of the LED. You will need LED bulbs with built-in CANBUS resistors, or you will need to splice load resistors into the wiring harness.
• Color Matching: Factory Toyota LEDs usually sit around the 5000K to 6000K color temperature range. When buying replacement LEDs for your license plate or reverse lights, look for 5500K-6000K bulbs for a perfect factory match.
• Clearance Issues: The 3rd brake light and cargo light housings are notoriously shallow. If you buy oversized 921 LED bulbs, the lens cover may not snap back into place.

How to Replace Each Bulb

While most of your primary lighting is sealed, here are some quick tips for replacing the accessible bulbs on your 2022 Tundra:

• Front Turn Signals (SR/SR5): These can be accessed through the wheel well liner. Turn the steering wheel fully to one side, remove the plastic retaining clips on the fender liner, pull it back, and reach up to twist the bulb socket counterclockwise.
• Rear Turn Signals and Reverse Lights: Drop the tailgate and locate the 10mm bolts securing the taillight assembly to the bed. Remove the bolts, pull the assembly straight back (it requires a firm tug to release the alignment pins), and twist the corresponding socket to remove the bulb.
• License Plate Lights: Crawl under the rear bumper and locate the back of the license plate light housing. Twist the socket counterclockwise to pull out the 194 bulb.
• Cargo/3rd Brake Light: You will need to remove the screws on the exterior of the cab holding the red lens in place. Be careful not to overtighten these screws when reinstalling, or you will crack the plastic housing and cause a water leak.

Common Lighting Issues for This Generation

Because the 2022 Tundra is a relatively new platform, long-term electrical gremlins are still revealing themselves. However, a few issues have become common:

1. Condensation in Headlights: Some early build 2022 models experience excessive moisture buildup inside the sealed LED headlight assemblies. While a light fog that burns off quickly is normal, standing water droplets are not. If your truck is under warranty, a dealer will usually replace the entire housing.
2. Expensive Replacements: Since the headlights and taillights are sealed LED modules, a minor fender bender that cracks a lens means you cannot just pop in a new $15 bulb. You must replace the entire assembly, which often costs over $1,000 per side.
3. Bed Light Wiring: Some owners have reported issues with the factory LED bed lighting circuit shorting out due to exposed wires near the tailgate hinge.

If you are dealing with a complex CANBUS error, a cracked LED module, or wiring issues that go beyond a simple bulb swap, don't risk damaging your truck's sensitive electronics. Find a trusted shop on Repairius.