2023-2025 Toyota GR Corolla iMT Auto-On Memory Module | Plug & Play
Description
2023-2025 Toyota GR Corolla iMT Auto-On Memory Module
Toyota's GR Corolla uses iMT—Intelligent Manual Transmission—to assist manual shifting by coordinating engine speed with clutch-pedal and shift-lever operation. Toyota explains that the system is intended to help produce smoother gear changes and reduce shift shock, particularly during conditions such as winding-road or incline driving.
The factory system is controlled through a dedicated iMT switch. Pressing the switch activates iMT and illuminates the green iMT indicator; pressing it again cancels the function.
For drivers who prefer to use iMT regularly, repeatedly pressing that switch after starting the vehicle becomes an unnecessary extra step.
The Recontrol-X iMT Auto-On Memory Module is designed to automate that routine.
Automatically Activate iMT After Startup
After the module is installed, it is intended to automatically provide the switch input needed to activate the factory iMT function following startup.
The goal is not to replace Toyota's iMT system—it simply automates the driver's normal button input.
The factory iMT logic, engine-speed control, clutch operation, transmission operation, and factory warning systems remain vehicle functions rather than functions generated by this module.
Original iMT Switch Remains Available
The original factory switch remains part of normal operation.
If you do not want iMT active for a particular drive, use the original iMT switch to cancel the function normally. This allows the driver to retain manual control rather than permanently locking the system into one operating state.
Toyota's manual confirms that pressing the iMT switch activates the system and pressing it again cancels it.
5.9-Inch Inline Harness
The supplied Recontrol-X product images show an approximately 5.9-inch plug-in harness with an integrated electronic control module, a blue connector at one end, a white connector at the other, and a plastic trim-removal tool.
This design is intended for an inline connection at the factory switch wiring.
GR Corolla owners using this type of module report removing the trim containing the iMT button, disconnecting the original iMT switch connector, and installing the module between the button and factory wiring. Commercial versions of the same concept are also specifically marketed as Auto iMT ON harnesses for GR Corolla.
Because the module works through existing connectors, the installation architecture avoids turning the modification into a permanent wire splice.
2023-2025 GR Corolla Fitment
The supplied Recontrol-X fitment data lists:
2023 Toyota GR Corolla
2024 Toyota GR Corolla
2025 Toyota GR Corolla
No trim or transmission information is separately provided in the fitment sheet.
This matters particularly for the 2025 model year. Toyota offered the 2025 GR Corolla with both an 8-speed Gazoo Racing Direct Automatic Transmission and a 6-speed Intelligent Manual Transmission.
Therefore, buyers should confirm the presence of the factory iMT switch and matching connector before ordering rather than assuming that every 2025 GR Corolla uses the same switch configuration.
What iMT Actually Does
This product page should not confuse iMT with engine Auto Start-Stop.
Toyota explains that iMT controls engine speed to suit clutch and shift-lever operation, helping the driver shift more smoothly.
It does not mean the GR Corolla automatically shuts its engine off at traffic lights.
This is exactly why this SKU should not simply reuse Tundra Auto Start-Stop copy.
What the Module Is Not
The Recontrol-X module is not an ECU tune, horsepower upgrade, transmission repair device, clutch protection guarantee, or replacement for a malfunctioning iMT system.
Toyota notes that if an iMT malfunction message appears, the system may be temporarily unavailable or malfunctioning and the vehicle should be inspected.
For a correctly matched GR Corolla equipped with the factory iMT switch, the intended benefit is focused: automatic iMT activation after startup, retained factory switch control, plug-in installation, and no need to repeat the same iMT button press every drive.
Vehicle Fitment
Additional Information
| Brand | Recontrol-X |
Reviews
S&Q
What does this module do on a Toyota GR Corolla?
It is designed to automatically activate the factory iMT function after startup, reducing the need to press the iMT switch manually each time you drive. Toyota describes iMT as a system that adjusts engine speed based on clutch and shift operation to support smoother gear changes.
Is this an engine Auto Start-Stop eliminator on the GR Corolla?
The GR Corolla application should be understood as an iMT switch automation module, not as a conventional traffic-light engine Stop & Start eliminator like the Toyota Tundra version. The module uses a similar inline-switch architecture, but the controlled vehicle function is different.
Can I still turn iMT off after installing the module?
Yes. The factory iMT switch remains available for manual control. Toyota states that pressing the iMT switch activates the system and pressing it again cancels it, so you can still change the setting when desired.
Will this fit every 2025 GR Corolla?
The supplied fitment data lists 2025 Toyota GR Corolla, but Toyota offered the 2025 model with both manual and automatic transmissions. Because this module operates through the factory iMT switch, confirm that your vehicle has the iMT switch and matching connector before ordering.
Does installation require cutting or programming?
The supplied module uses a 5.9-inch inline connector harness designed for the factory switch connection. No permanent wire cutting is intended for this plug-in architecture, and the module is not an ECU tune. Compare the connector with the product photos before installation.