electrical
Turn Signal Bulb - Rear
for 2021 Toyota RAV4 2.5L I4 · AWD
Editorial review:Chris Hackleman — Master Technician · 20+ years · Jeff Moore — Master Mechanic · 20+ years
Difficulty
Easy
Time
12 min
Tools
2
Steps
8
✓Expert-verified. Personally reviewed and approved by OLP's master technicians (Chris Hackleman & Jeff Moore — 20+ years each). Always follow the vehicle's factory service information and torque specs.
This procedure covers the removal and replacement of the rear turn signal bulb on a 2019-2024 Toyota RAV4 with the 2.5L I4 engine, accessed from inside the rear cargo area.
Warnings
⚠Allow bulb to cool for at least 5 minutes if vehicle has been recently operated to avoid burns.
ℹ️Do not touch the glass portion of halogen bulbs with bare hands as skin oils can cause premature failure. Use gloves or hold by the plastic base only.
Tools required
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Parts
- Rear turn signal bulb × 1 — 7440A or WY21W amber bulb
As an Amazon Associate and Autel/ANCEL partner, OLP earns from qualifying purchases — how we link. This never changes the specs we publish.
Preparation
- Park vehicle on level surface and turn off ignition
- Allow rear turn signal bulb to cool if recently operated
- Open rear liftgate for access to cargo area
Procedure
- 1Access the taillight assemblyFrom inside the rear cargo area, locate the fabric or carpet access panel on the interior side of the taillight assembly. This panel is on the rear quarter panel trim behind the affected taillight.
- 2Remove the access coverCarefully pull back or remove the fabric access cover. Some models have a small plastic fastener or Velcro; gently pry or pull to release. No tools are typically required for this step.
- 3Locate the turn signal bulb socketBehind the taillight assembly, identify the turn signal bulb socket. The turn signal socket is typically the amber-colored bulb socket, usually positioned in the middle or lower portion of the taillight cluster. Consult your owner's manual diagram if unsure.
- 4Remove the bulb socketGrasp the bulb socket firmly and rotate it counterclockwise approximately 1/4 turn (90 degrees) until it releases from the taillight housing. Pull the socket straight out from the housing.
- 5Remove the old bulbWith the socket removed, push the bulb gently into the socket and rotate counterclockwise to release it from the bayonet mount, then pull the bulb straight out. Inspect the socket contacts for corrosion or damage and clean if necessary with electrical contact cleaner.
- 6Install the new bulbWearing gloves or holding the new bulb by its plastic base only, align the bulb pins with the socket slots. Push the bulb in gently and rotate clockwise until it locks into place. Ensure the bulb is seated firmly and cannot be pulled out without rotating.
- 7Reinstall the bulb socketInsert the bulb socket back into the taillight housing, aligning the tabs with the slots. Push in firmly and rotate clockwise approximately 1/4 turn until the socket locks into place. Verify the socket is fully seated and secure.
- 8Replace the access coverReinstall the fabric or carpet access panel, ensuring any fasteners or Velcro are properly secured. The cover should sit flush with the surrounding trim.
Reassembly
- Ensure the bulb socket is fully locked into the taillight housing with no gaps
- Verify the interior access panel is properly secured and does not rattle
Verification
- Turn the ignition to the ON position without starting the engine
- Activate the turn signal on the side where the bulb was replaced and verify the indicator flashes at normal speed on the dashboard
- Have an assistant observe the rear turn signal operation or use a reflective surface to confirm the new bulb illuminates properly
- Test the hazard lights to verify both rear turn signals function correctly
- Confirm no warning lights appear on the instrument cluster indicating a bulb failure
Related trouble codes on this vehicle
Codes that commonly send this job to the bay — tap one for symptoms, causes, and diagnostic steps.
P0040O2 Sensor Signals Swapped Bank 1 Sensor 1 / Bank 2 Sensor 1P0041O2 Sensor Signals Swapped Bank 1 Sensor 2 / Bank 2 Sensor 2P0717Input/Turbine Speed Sensor Circuit No SignalP0722Output Speed Sensor Circuit No SignalP1335No Crankshaft Position Sensor SignalP1500Starter Signal CircuitP1520Stop Lamp Switch Signal MalfunctionB0101Immobilizer Transponder Signal Not DetectedB0112Key Fob Signal Weak or IntermittentB1005TPMS Sensor Signal Intermittent - Left FrontC0036Left Front Wheel Speed Signal ErraticC0041Right Front Wheel Speed Signal Erratic
Chasing one of these codes and not sure which part is guilty? Ask a master mechanic about YOUR car →