Frequently Asked Questions

TPMS sensors have an internal battery. If the battery power is low, it can cause TPMS problems. When you have your tires changed, have them check your TPMS sensors and replace as needed. If you are worried about future problems it would be a good time to replace all of the sensors. When the battery level is low they can act up intermittently.

Ambient temperature changes will cause tire pressures to change. Tire pressures will drop about 1 psi for every 10°F drop in ambient temperature. This can cause your TPMS warning light to come on in cold temperatures, then go out as the tire warms up while driving.

If the TPMS sensors are not the right ones for your vehicle, then they probably wont work as the run on different frequency’s. The TPMS tool also wont read the sensors unless the proper vehicle is selected in the tool menu. If they are aftermarket sensors, the may be set up to a new vehicle with a TPMS tool if applicable.

You can purchase a set of replacement sensors and have them installed in your extra set of  wheel assemblies. When the extra set of wheel assemblies are mounted to the vehicle, the TPMS sensors may have to be relearned to the vehicle’s computer. Also, when the original set of wheel assemblies are reinstalled on the vehicle, the original sensors will need to be relearned to the vehicle’s computer. Some aftermarket sensors can be cloned to the original sensors eliminating the need to relearn the sensors each time the wheel assembly’s are changed.

The vehicle placard is normally located on the drivers inside door jam or door. It contains information including the vehicle manufacturer’s recommended tire pressure, tire size and the maximum load you should have in your vehicle. The recommended tire pressure may also be found in the vehicle owner’s manual.

Tires should be inflated to the vehicle manufacturer’s recommendation as found on the vehicle tire information door placard. Do not fill the tire to the pressure listed on the sidewall, this is the maximum allowable tire pressure for the tire.

Many things can affect tire pressure. Ambient temperature changes will cause tire pressures to change. Tire pressures will drop about 1 psi for every 10°F drop in ambient temperature. Tire problems and damage such as punctures, and corroded or cracked rims can also cause tires to loose pressure. Tires can lose as much as 1.5 psi per month normally, as air escapes the tire and rim naturally.

The TPMS light can come on in two different ways with two different meanings:

TPMS warning light comes ON and stays ON

One or more of your tires may have a low-pressure condition. Inspect all of your tires and check the air pressure. The correct air pressure for your vehicle can be found on the placard, usually located on the inside door panel.

TPMS warning light comes ON and flashes ON for one second and OFF for three seconds

This indicates a malfunction with the vehicle’s TPMS system.

No it is against the law to disable a TPMS system. Under 49 U.S.C. 30122(b), “A manufacturer, distributor, dealer or motor vehicle repair business may not knowingly make inoperative any part of a device or element of design installed on or in a motor vehicle or motor vehicle equipment in compliance with an applicable motor vehicle safety standard.”

Check the FAQ page for an answer to your problem. If there is no answer there, leave a comment at the bottom of the main TPMS Tire Pressure Light Reset Procedures page. Include the year, make and model of your vehicle along with a description of the problem. We will reply to your comment with an answer as soon as possible. Please note: only questions related to TPMS reset procedures will be answered.