Toyota Smart Access Cable

Overview

Purpose-built for modern Toyota platforms, the Toyota Smart Access Cable creates a streamlined connection point for diagnostics, data logging, and calibration access using MPVI4 or RTD4.

Unlike a traditional plug-and-play connection, the Smart Access Cable installs behind the dash and integrates directly with the factory OBDII system while maintaining an accessible connection point for HP Tuners interfaces.

Once installed, users can connect MPVI4 with VCM Suite software or RTD4 with TDN to scan, data log, diagnose, and calibrate supported Toyota applications.

Supported Toyota Applications

The Toyota Smart Access Cable currently supports the following applications: (non-HEV models only)

• 2022 Toyota Tundra 3.5L (V35A-FTS)
• 2023-2026 Toyota Tundra 3.4L (V35A-FTS)

Additional Toyota platform support may be added in future releases.

How It Works

The Toyota Smart Access Cable installs behind the dash and connects directly to the factory OBDII system. View the technical documentation for a full install guide.

Once installed:

• Connect MPVI4 for use with VCM Suite.
• Connect RTD4 for remote tuning through TDN.
• Scan & diagnose vehicle data.
• Data log live vehicle behavior.
• Adjust calibration settings in VCM Editor.

The permanently integrated design provides a clean OEM-style installation while maintaining convenient access for future diagnostics and calibration workflows.

Important Usage Notes

The Toyota Smart Access Cable is required for supported tuning & diagnostics workflows.

• The engine must remain OFF during the calibration write process.
• Installation requires removal of lower dash trim panels.
• Always verify application compatibility before purchase.
• MPVI4 requires VCM Suite software.
• RTD4 remote tuning workflows utilize TDN.

In the Box

• Toyota Smart Access Cable.
• QR code that links to technical documentation.