Speedometer Calibrator | Inline | Toyota Tacoma 4WD (2016-2023)

Take the guesswork out of driving a lifted Toyota Tacoma 4WD with Rough Country’s Inline Speedometer Calibration Device. This plug‑and‑play module reprograms your speedometer to match the output of larger tires and updates the vehicle’s ECM for accurate readings, proper shift points, and reliable electronic stability control.

• Compatibility: Designed for Toyota Tacoma 4WD models from 2016–2023; an inline device that connects directly to the Diagnostic Link Connector Port.
• Inline, Plug‑and‑Play Design: Easy installation without complex wiring—simply connect and calibrate, minimizing vehicle downtime.
• ECM Updates: Goes beyond changing the dash readout by reprogramming the ECM to reflect new tire size, ensuring cohesive performance across systems.
• Tire Size Calibration: Reconciles your actual speed with the speedometer after upgrading to larger tires, delivering accurate readings on every drive.
• Speedometer Reset: Built‑in function to restore stock speedometer settings for service or maintenance when needed.
• Warranty: Includes a 1‑year warranty for peace of mind and reliable support.

This calibration solution helps you stay safe and informed. Accurate speedometer readouts align with true vehicle speed, supporting correct shift points and keeping stability and traction control functioning as designed. By updating the ECM to your tire setup, you reduce drivetrain wear and prevent discrepancies that can complicate maintenance or towing scenarios. It’s a practical, cost‑effective upgrade for any Tacoma owner running larger tires, especially for those who want a straightforward setup with dependable results and a simple return to stock when needed.