How do TPM service tools work?
The majority of today's sensors can be activated or "waked" by sending a 125 kHz LF signal (either continuous wave or modulated). This signal forces the sensor to transmit a coded message at either 315 MHz or 433.92 MHz. The proper tool will decode that message and provide the CORRECT FEEDBACK to the technician. The proper tool will have in it all the necessary protocols to be effective on all of these types of sensors.
Why is controlling of LF critical?
Some sensors used today are very sensitive to the LF signal transmitted by service tools. Others require a lot of LF to make them transmit. The proper tool is designed with both in mind. Only a company that works with the technology can design software to work on both types. Too much LF used on sensor types that are sensitive and you will likely "wake up" the wrong sensor and ultimately get the wrong "ID." Not enough LF for another sensor may mean that you don't wake the sensor at all.
What is RF Decoding?
It was what TPM tools should be designed to do. The RF signal transmitted from the Sensor carries data. Proper decoding of that data means accurate information for the technician. TPM tools that do not decode that data can give bad information to the service technician, which is very costly.
Why is decoding important?
Technicians need to be able to trust the tool in giving proper feed back from the sensor. A tool that does not decode properly can give false or unreliable information. It is important to invest in the proper tool that accurately decodes the sensor data - this saves time and money!
Where are TPM service tools required?
TPM tools are required in OEM dealerships, Service Centers and Retail Tire Centers. Multi-brand dealers will benefit greatly from a tool that wakes and decodes the majority of TPM sensors.
Why are TPM service tools required?
First and foremost it limits the liability of the repair center. It gives the operator and the customer the confidence that state of the TPM system is known prior to working on the vehicle. It also provides an opportunity to create a sale in the event that a faulty TPM sensor is discovered.
If a TPM sensor is replaced, the vehicle must be "reset" or "programmed" to the new sensor.
If a "position dependant" vehicle has had a tire rotation, the sensor ID's must be re-learned or re-positioned to the car's computer.
The need for TPM tools is financially driven. You can limit cost with a solid TPM tool, and you can use to increase services to your customer. |