Innova SDS50 SDS-Tech: Tire Pressure Monitor System Relearn

Purpose

To guide users on how to perform the TPMS sensors while using the Innova SDS50 SDS-Tech Tablet Scan Tool.

Introduction

Tire Pressure Relearning is a crucial maintenance procedure that is required for vehicles equipped with a Tire Pressure Monitoring System (TPMS). The TPMS module of a vehicle registers or relearns the unique ID of each wheel's TPMS sensor and its associated wheel. This relearning process is necessary whenever a sensor is replaced or when changing the tire position, ensuring that the new sensor ID or the new sensor ID for that specific wheel location is properly registered in the vehicle's TPMS module. Several methods to perform a tire pressure relearn are used depending on the vehicle make and model and the type of TPMS system installed. The Innova SDS50 SDS-Tech Tablet Scan Tool lets you access the procedure or On-Board Diagnostic (OBD) process for resetting the TPMS sensor.

Procedure

Step 1 - Connect Innova SDS50 SDS-Tech Tablet Scan Tool to the vehicle and select 'Workshop Tools' function

First, connect the Innova SDS50 SDS-Tech Tablet Scan Tool to your vehicle via the On-Board Diagnostics (OBD) connector to retrieve the vehicle's information, such as Vehicle Identification Number (VIN) and model.
Then, select the 'Workshop Tools' section.

Step 2 – Select the ‘TPMS Relearn’ function to relearn the TPMS sensor

The Innova SDS50 SDS-Tech Tablet Scan Tool shows the list of functions available for your vehicle. To initiate the TPMS Relearn, choose the ‘TPMS Relearn' item from the list.
The Innova SDS50 SDS-Tech Tablet Scan Tool supports two types of TPMS Relearn:  
- TPMS Relearn Procedure
- TPMS Relearn OBD

1. Relearn Procedure

Select the ‘TPMS Relearn Procedure’ item, the details relearn procedures will be displayed on the Tablet Scan Tool. Ensure that your vehicle meets the requirements listed, read, and follow the procedures to perform ‘TPMS Reset’ function.

2. On-Board Diagnostic Relearn

From the TPMS Relearn menu, select the ‘TPMS Relearn OBD’ function.
Select the function you wish to perform. In this case, select ‘Tire Pressure Sensor Learn' item.
NOTE: The name of the TPMS Relearn function varies by manufacturer, year and model.
Follow the instructions provided to perform ‘Tire Pressure Sensors Learn’ process. Tap ‘Next’ button to go to the next step.

The Scan Tool shows the current data of the vehicle with ‘Command State: None’ - meaning the function is not performed on this vehicle.
Select 'Learn' button to perform the function.
Waiting for the Scan Tool to communicate with the vehicle to perform the function.
After that, the Scan Tool shows the ‘Command State: Learn’ - meaning the function is performed on this vehicle.
To finish, choose ‘Back’ button to return to the TMPS Relearn Menu, then press ‘Back’ button to return to the Workshop Tools screen.

Summary

If you replace a sensor, component, or battery in a modern vehicle, the control module might trigger the Malfunction Indicator Light (MIL). Additionally, the new part may not synchronize with the stored value in the ECU, causing the vehicle to run in 'Limp home' mode. To prevent this from happening, you can use a Scan Tool to reset or relearn the value of the new part. This procedure is applicable to the 'TPMS Relearn’ function when using the Innova SDS50 SDS-Tech Tablet Scan Tool, which also supports several other manufacturers.