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TPMS - Coggle Diagram
TPMS
Direct
Type
Stem mounted
Band mounted
Inner tire
Operations
Sensors measure temperature and pressure
Send data to the vehicle regularly (with sensor ID)
Alarms event when necessary
Advantages
More accurate
No need to reset after tire inflation or replacement
Provide also temperature
Real time measurements
Disadvantages
Sensors can be damaged during installation
Costlier than indirect TPMS
Installation needs professional help
Sensor batteries can run down
Indirect
Operations
ABS monitors the wheel speed
It helps out the indirect TPMS system as well
Will roll at a varied wheel speed
When the tire pressure drops in the tire
Computer system notices makes the low-pressure light come on
Advantages
Less expensive than a direct TPMS
Low maintenance
Installation can be one at home
Disadvantages
Needs reset after tire inflation and rotation
All four tires are deflated could be not detected
Reading not highly accurate
Mandatory in most of the world since a few years
