TMS-4 Tyre Monitoring System Internal Sensors

Integrated Telemetry: TMS-4 Tyre Monitoring System (Internal)

In the high-performance ecosystem, the contact patch is the most critical variable. The Haltech TMS-4 Tyre Monitoring System is a professional-grade, plug-and-play solution designed to integrate directly with your Haltech Elite or Nexus ECU. Utilizing Internal Sensors that mount inside the wheel, this system provides broadcast-quality telemetry for both tyre pressure and temperature. By moving this data into the standalone ECU integration, the tuner can implement advanced safety strategies and performance offsets that are impossible with consumer-grade systems. This is an essential upgrade for LS-swap road racers and 2JZ drag racers who require detonation protection logic to account for changes in load and rolling diameter.

The Engineering of CAN Bus Monitoring

The TMS-4 system communicates via the CAN Bus network, interfacing with the ECU using the Haltech NSP or ESP software. Each of the four internal sensors contains a pressure transducer and a high-accuracy temperature sensor. When the vehicle is in motion, the sensors wake up and transmit data every 60 seconds. This Analogue-to-Digital interface converts the raw sensor readings into digital packets that the ECU can use for logging or logic triggers. By using internal sensors, the system is protected from the aerodynamic and centripetal forces that affect external sensors, ensuring that the tyre temperature and tyre pressure data is a true representation of the tyre’s core environment, not just the surface.

Operational Benefits: ECU-Triggered Alarms and Logic

One of the primary benefits of the TMS-4 is its ability to fire Diagnostic Trouble Codes (DTCs) within the ECU. The system can be programmed to trigger warnings for Pressure High/Low, High Temperature, and Air Leak Detected. In a fuel map calibration or race scenario, the ECU can respond to a rapid air leak by automatically dropping the boost target via closed-loop boost control or setting an RPM limit to protect the driver and the vehicle. Additionally, monitoring sensor battery voltage ensures that the telemetry remains active during multi-day events. This proactive approach to tyre management is a cornerstone of professional motorsport safety.

Fitment and Software Integration

This kit is specifically designed to suit Haltech Nexus and Elite ECUs. The internal sensors replace the standard valve stems and are compatible with most aftermarket performance wheels. The kit includes a TE Mcon to DTM-4 CAN cable for seamless harness integration into the vehicle’s CAN backbone. Because the sensors are mounted internally, they are safe from debris and road grime. It is important to note that the batteries are non-replaceable and have a typical lifespan of 3 years, which is calibrated for the high-frequency demands of performance use.

Technical Specifications

Summary & Includes

The TMS-4 Internal System is the definitive tool for real-time tyre telemetry. Includes: 1 x Haltech TMS-4 Receiver, 1 x CAN Cable, 4 x Internal Sensors, Warning Sticker Set, Mounting Hardware, and Quick Start Guide. Note: Designed for professional wheel installation; tyre dismounting is required.