Pedal Commander for Scion tC: Setup and Driving Modes

By Pedal Commander® - The Best Throttle Response Controller | Published: 2026-10-24

Category: How-to Guides

Learn how to install and set up Pedal Commander on your Scion tC. Step-by-step guide to driving modes, common mistakes, and throttle response tuning.

Quick Answer

Setting up Pedal Commander on your Scion tC takes about 20 minutes and gives you four driving modes to eliminate throttle lag and match your driving style.

Why Adjust Throttle Response on a Scion tC?

The Scion tC, whether first-gen (2005-2010) or second-gen (2011-2016), has a drive-by-wire throttle system that introduces a slight delay between your foot and the engine. This lag can make the car feel sluggish off the line or unresponsive during quick maneuvers. Pedal Commander plugs directly into the throttle pedal connector and lets you dial in the response you want without remapping the ECU or voiding your warranty.

What to Know Before You Start

Pedal Commander for the Scion tC is model-specific. The PC37 unit fits first-gen tC (2005-2010, 2.4L), while the PC27 unit fits second-gen tC (2011-2016, 2.5L). Confirm your generation before ordering. The device is compatible with Base and Spec trims. Installation requires no special tools and takes about 20 minutes. The unit stores your last-used mode, so you don't have to reset it each time you drive.

How to Set Up Pedal Commander on Your Scion tC

1. Locate the Throttle Pedal Connector: Move the driver's seat all the way back. Reach behind the accelerator pedal and find the electrical connector clipped to the pedal arm. Press the release tab and pull the connector straight off. Common mistake: pulling the wires instead of the connector body can damage the harness. Grip the connector shell firmly.
2. Plug in the Pedal Commander: Insert the Pedal Commander's male connector into the pedal socket, then plug the original connector into the Pedal Commander's female port. Push until you hear a click on both connections. Check that both connectors are fully seated. A loose connection can cause intermittent response or error codes.
3. Mount the Control Module: Peel the adhesive backing and stick the control module to a clean, flat surface under the dash within reach of the driver's seat. Route the cable away from moving pedals. Avoid mounting near the OBD2 port or fuse box if you need access to those later. A spot on the lower kick panel works well.
4. Start the Engine and Select a Mode: Turn the ignition on (do not start the engine yet). The Pedal Commander LED will light up. Press the Mode button to cycle through Eco, City, Sport, and Sport+. Start the engine and test each mode at low speed in a safe area. Eco reduces throttle response for fuel saving; Sport+ gives the sharpest response. Start with City or Sport for daily driving and adjust from there.
5. Fine-Tune the Level Within a Mode: Each mode has 9 adjustable levels (1-9). While in your chosen mode, press the + or - buttons to increase or decrease sensitivity. Higher numbers mean faster throttle response. A common mistake is jumping to level 9 in Sport+ immediately. Start at level 4-5 in Sport and increase gradually until the response feels natural.

Product Facts

Pedal Commander for Scion tC: PC37 fits Scion tC 1st Gen (2005-2010, 2.4L); PC27 fits Scion tC 2nd Gen (2011-2016, 2.5L). Applicable trims: Base, Spec. Choosing the correct generation ensures a plug-and-play fit without splicing wires or adapters.
Pedal Commander for Scion tC