Troubleshooting

• Have you verified your vehicle Make, Model and Year?
• Is your installer’s TPMS scan/relearn tool updated?
• Has your installer inspected the sensor before installation?
• Has your installer followed the OE relearn procedure?
• Has your installer acknowledged the difference between different types of relearn procedures?
• Most importantly, was your tyre handled by a certified mechanic who specialises in tyre sensor replacement and TPMS reset?

Before we go further into technical insight, it is important for you to understand that the tyre sensor is only one of the components from the Tyre Pressure Monitoring System, as there are many factors involved to the system’s functionalities. We will go through each of them along with recommended solution.

Some vehicle have a split during the same production year, which means the model gets redesign and uses a different OE sensor. For example, BMW E90 switched to a new sensor for the production after October 2009, and the new sensor won’t fit the models made before that point.

Another interesting fact is, some car makers use different OE sensors for one vehicle model based on trim levels, engine type or key type. Generally speaking, it’s a fairly small percentage but still requires certain attention when buying a TPMS sensor.

Solutions – Lookup VIN to acquire vehicle production detail to further verify model and year, production code

Every tyre sensor has it’s own unique identity and usually forms a combination of numbers and letters. Some ECU’s use this ID to register the sensor/tyre location and to recognise the signal transmitted from each sensor.

There are cases where the installer has failed to scan or trigger new sensors due to their scan tools not recognising the ID format. This indicates it is about time for them to update software, firmware and vehicle data in their tools.

There are two types of valve stem commonly used by car makers, aluminium/metal clamp-in type & rubber snap-in type. Both type of valve stems can fit most sizes of wheels, but the rubber snap-in type provides the installer more flexibility to fit better on aftermarket wheels and off-road tyres.

For heavy duty pickup trucks the wheel is often thicker and wider, a metal valve stem with limited length may not screw tight enough on the wheel. 

Solution – Always buy the same valve stem types as factory, to avoid installation failure.

Relearn – The relearn procedure can be found in the vehicle’s manual/handbook. The relearn procedure refers to the process of pairing a new TPMS sensor to the vehicle’s tyre pressure monitoring system. A TPMS relearn is always required when a new TPMS sensor or sensors are installed or rotated.

There are 3 types of relearn available. Each vehicle will have a combination of one/two relearn procedures.

• Auto Relearn – This requires the vehicle to be driven for a certain amount of time at a specified constant minimum speed.
• Stationary Relearn – This requires a specific sequence of actions set by the vehicle manufacturer which may include pressing a series of buttons (such as, on the steering wheel, on the dashboard etc), holding the brake and many other actions or combinations.
• OBD Relearn – This requires you to connect the vehicle via the OBDII port to a TPMS diagnostic tool. Following the instruction using the TPMS diagnostic tool, the vehicle can be placed in the relearn state to complete the relearn procedure. In addition, you can use the TPMS scan tool to read the TPMS sensor/s to acquire the ID codes.

More than 90% of relearn failures were caused by improper relearn as most mechanics and technicians aren’t trained properly or lacking TPMS knowledge.

Before programming MOREsensor Universal TPMS sensors with the PT47, please make sure that you have selected the correct region and vehicle Make, Model and Year on the tool. 

Ensure that the Mobiletron PT47 TPMS tool has been updated regularly (we advise quarterly) as new vehicle applications lines can be added every three months.

Help with updating your tool can be found in our support menu under the ‘Update Your Tool’ page.