The automatic transmission in most Toyota 4Runners uses Toyota ATF WS (World Standard) automatic transmission fluid.
The exact specification can vary by model year and transmission code. To be certain, consult your owner's manual, the transmission identification label, or contact a Toyota dealer for the precise fluid requirement for your vehicle and VIN.
Fluid specifications by model year and transmission type
Below is a practical guide to help you verify the correct ATF for common 4Runner configurations. Always rely on the official documentation for your vehicle.
- 5th generation (2010–present) automatic transmissions generally specify Toyota ATF WS for the 5-speed automatic used in most trims.
- 4th generation (2003–2009) automatics typically require ATF WS as well, but verification with the vehicle’s label or manual is advised due to multiple configurations across years.
- 3rd generation and earlier: transmission fluid specifications vary by the exact transmission code installed in your vehicle. Check the owner’s manual or the service label to determine the correct ATF for your vintage.
In practice, the single most reliable source is the official documentation for your vehicle. Using the wrong fluid can cause shifting issues or long-term damage.
Maintenance tips: confirming and changing the fluid
Before attempting a fluid change, follow these steps to ensure you use the correct fluid and avoid contamination.
- Check the owner’s manual or the vehicle’s service label for the exact ATF specification required for your transmission.
- If the manual is unavailable, contact a Toyota dealer or consult official service information for your VIN.
- When refilling, use the specified ATF (commonly ATF WS on modern 4Runners); never substitute Dexron fluids unless explicitly allowed by Toyota for your exact transmission code.
- Follow the manufacturer’s procedure for draining and refilling (pan drain vs. filter service, if applicable), and replace any required seals or gaskets per the manual.
- After refilling, run the transmission through the gears and recheck fluid level per the manual; top off as needed.
If you’re not comfortable performing a transmission fluid change, have a qualified technician perform the service to safeguard against incorrect fluid and improper level readings.
Summary
For most modern Toyota 4Runners, the recommended automatic transmission fluid is Toyota ATF WS. Always verify with the owner’s manual, the transmission tag, or a dealer for the exact specification for your model year and VIN. Using the correct fluid helps ensure smooth shifting and protects the transmission over time.