Originally Posted by typhoon55
Just to clarify... TPMS will only light up if a total of 8 lbs loss - I assume that the 8 lbs loss is calculated from 4 tires @ 26 lbs. If 1 or more tires are over inflated (27 lb or more) that would not effect the TPMS.
No way, Jose'. Here's how it works, quoted from the manual:
Note: The "low" pressure threshold is defined as 26 psi. I couldn't find a reference for "critical" pressure.
DESCRIPTION
This vehicle has a tire pressure monitoring (TPM) system.
It is there to alert the driver when air pressure in any of the vehicle’s four tires falls below a predetermined threshold. It alerts the driver with a lamp in the instrument cluster.
The tire pressure monitoring system utilizes transmitters that are located in the valve stem of each tire to communicate the tire pressure condition to the module.
If a tire has low air pressure, an indicator light on the instrument cluster is illuminated. The vehicle operator must check the tire pressure of each tire in order to determine which tire has a low pressure condition.
The garage door opener/tire pressure monitoring (TPM) module has a microprocessor controller that can monitor the transmissions from the sensor/transmitters anytime the ignition is on. It can store the last 32 transmissions. There are two important values included in these transmissions. They are:
² Why the transmission was sent,
² Low Tire Pressure
The module compares the transmitted tire pressure from the sensor to the two pressure thresholds (low pressure or critical pressure). If the module determines that the tire pressure transmitted is below the low or critical pressure thresholds, it will signal for the “Low Tire” pressure warning lamp to come on.