What can set off a tire pressure sensor?
Temperature also can affect tire pressure and trigger your TPMS light. When the weather is cold, the tire pressures drop. A 10-degree drop in ambient temperature results in the loss of about 1 psi, according to Tire Rack.
When does a TPMS warning light come on?
The first step in any diagnostic strategy is to figure out if your customer’s vehicle actually has a TPMS problem. Any number of things can cause the TPMS warning light to come on or flash. The light should illuminate when a tire is low, and should eventually go out after the low tire has been inflated to its recommended pressure.
Why is my TPMS not working on my car?
On some vehicles, the signals to the TPMS module are shared or go through the keyless entry system, so a wiring problem that affects the keyless entry system could cause a problem with the TPMS system. The TPMS module may be working fine but is not getting the right information from the keyless entry system.
What should voltage drop test be for TPMS?
If you suspect the TPMS module is not receiving a good signal from one or more sensors, check the antenna wiring for continuity and problems such as shorts, opens or high resistance. A voltage drop test across any wiring connections should read 0.10 volts or less.
What causes a TPMS system to set a false code?
Something else that can cause a TPMS system to malfunction or set false codes is electromagnetic interference (EMI). EMI from another source might be messing with the TPMS signals and confusing the system.
What should I do if my TPMS is not working?
Typically, the only service required is to inflate the tires to proper pressure and reset by pressing a reset button. Not all vehicles relearn the TPMS system by simply driving the vehicle after servicing the TPMS.
What do you need to know about Indirect TPMS?
Vehicles equipped with indirect TPMS do not have sensors in the wheels. Therefore, no sensor will be detected when trying to scan/activate/wake-up the sensors. Typically, the only service required is to inflate the tires to proper pressure and reset by pressing a reset button.
The first step in any diagnostic strategy is to figure out if your customer’s vehicle actually has a TPMS problem. Any number of things can cause the TPMS warning light to come on or flash. The light should illuminate when a tire is low, and should eventually go out after the low tire has been inflated to its recommended pressure.
What does TPMS stand for in tire pressure monitoring system?
TPMS stands for “Tire Pressure Monitoring System” and it turns on whenever your car tires are irregularly inflated. However, a lot of drivers complain that TPMS warning light keeps blinking even after they have filled your tires to the proper tire pressure.