Tire Pressure Sensors
A Tire Pressure Sensor can be of the direct or indirect type according to the NHTSA legislation. In practice nearly all OE's have opted to install Direct TPMS in their new builds. A Direct TPMS is a physical pressure and temperature transducer which is usually either valve stem mounted or banded to the wheel and transmits real time tire pressure information to the driver of the vehicle either via a dashboard display or a tire pressure warning light on the instrument cluster. The sensors are manufactured by international companies such as Schrader, Siemens, TRW, Pacific, Lear, Beru and others. For more information on specific Automotive sensors Makes & Models please select a site from the list below:
- Acura - The manufacturers of Acura TPMS Sensors are TRW Automotive & Pacific Industrial Corp.
- Chrysler - The manufacturers of Chrysler & Daimler Chrysler TPMS Sensors are Schrader Electronics & VDO.
- Ford - The manufacturers of Ford TPMS Sensors are Schrader Electronics, VDO & Lear.
- GM - The manufacturers of GM TPMS Sensors are Schrader Electronics, VDO & TRW.
- Honda - The manufacturers of Honda TPMS Sensors are TRW Automotive & Pacific Industrial Corp.
- Hyundai - The manufacturers of Hyundai TPMS Sensors are TRW Automotive & Pacific Industrial Corp.
- Kia - The manufacturers of the Kia TPMS are TRW Automotive and Pacific Industrial Corp.
- Mitsubishi - The manufacturer of Mitsubishi TPMS Sensors are Schrader Electronics.
- Nissan - The manufacturer of Nissan TPMS Sensors are Schrader Electronics.
- Subaru - The manufacturers of Subaru TPMS Sensors are Schrader Electronics.
- Toyota - The manufacturers of Toyota TPMS Sensors are TRW Automotive & Pacific Industrial Corp.
Tire Pressure Sensor Manufacturers
In order to preserve the battery life the many sensors on a stationary vehicle revert to a reduced activity mode. To further preserve the battery life when stored as a replacement part the TPMS is put into a storage mode (in hibernation). The TPMS should also be put into this mode when the vehicle is being shipped from Asia or Europe (or awaiting shipment or distribution). Each manufacturer has a different way to bring the TPMS out of hibernation. In some cases the sensor has further different modes of operation that also have to be configured.
- TPMS sensors from Schrader Electronics are supplied as replacement parts in the off mode and are simply commissioned for vehicle use. An activation tool providing a 125 KHz transmission will initialize the TPM for vehicle use.
- TPMS sensors from Beru and Lear are supplied as replacement parts hibernated. Once pressurized over 25 PSI for a period of time they become operational.
- TPMS sensors from Siemens VDO (now VDO Automotive AG) are supplied in a number of modes depending on the source of supplier. They can be supplied in TEST MODE and once installed on a vehicle will drive into the correct mode. Alternatively they can be supplied in SHIP MODE in which case they require activation by a 125 KHz modulated signal to put them into the correct mode.
- TPMS sensors from TRW are supplied as replacement parts in storage mode. To bring the sensor out of storage mode and to configure it for vehicle use requires a complex modulated 125 KHz signal. This usually requires a corporate tool as used by the vehicle manufacturer.
- TPMS sensors from Pacific are supplied hibernated and once pressurized and followed by pressure drop they become operational.
- TPMS sensors supplied to the aftermarket as Ford replacement parts are hibernated. Once pressurized over 25 PSI for a period of time they become operational. Ford have a number of suppliers such as Lear, Siemens VDO (now VDO Automotive AG) and Schrader.
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