Frequently Asked Questions

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tpms solutions

Do you have an application guide?

We have a TPMS Application Guide to provide technicians with Year-Make-Model (Y-M-M) lookup information.

How can I find a part for a specific vehicle?

You can find or Wheel Nut/Studs, Drain Plugs/Gaskets and TPMS application parts by Year, Make, Model using our Application Search on our website.

Do you have minimum order quantities?

Dynamic has a $100 minimum order quantity and many of our parts have individual pack minimums.

How can I purchase your products?

If you already have a preferred distributor, we suggest starting with them to find what you’re looking to purchase. If you don’t have a preferred distributor, fill out this form and we will connect you with the right fit.

We are a small independent shop that just open and looking for a supplier for the shop. How do we purchase?

To make sure we send you to the right supplier, please contact by email at, call us at 1-800-433-0708, or fill out this form.

Why would I replace the cap?

The cap contains a rubber seal preventing moisture and dirt from entering the stem and contaminating the seal of the valve core. The cap is an integral component in the sealing system of the TPMS sensor and should be replaced together with the rest of the components in the service pack at each tire change.

Why would I replace the valve core?

Heat and compression will eventually cause deterioration of rubber and plastic components. Replacing the valve core is vital to prevent slow leaks. Do not re-use a valve core. Replace with a new electroless nickel plated valve core for aluminum valves with each tire change.

Why would I replace the nut (for clamp-in sensors only)?

The anodized aluminum nut prevents metals from the possibility of galvanic corrosion. You should only use nickel-plated valve cores on aluminum valve stems. Additionally, torquing and retorqueing the nut multiple times may damage the threads to the point of failure. A new nut ensures accurate torquing.

Why would I replace the rubber valve (for snap-in sensors only)?

Since the rubber valve is constantly exposed to various environmental and weather conditions, it will inevitably experience more wear and tear along with aging. Replace the valve evert every time you change the tires. changed.

Why would I replace the grommet (for clamp-in sensors only)?

The grommet – the sealing gasket between the stem and the wheel rim hole – is subject to intense compression and high temperatures causing the grommet to adapt its shape to the rim surface. For a secure air seal, replace the grommet together with the other components in the service pack at each tire change.

Why would I replace the valve screw?

The valve screw is a self-tapping threaded screw that connects the valve to the sensor body to ensure a secure connection. The screw cannot be used a second time, so you will need to replace the screw.

What if the DVT Pro-Select sensor is incorrectly programmed and installed in the tire?

The DVT Pro-Select and DVT-PRO can simply be reprogrammed right through the tire.

What is a TPMS rebuild kit?

A TPMS rebuild kit contains all the components to rebuild the TPMS sensor’s valve. Replacement is recommended any time your tires/TPMS receive service. A rebuild kit includes:

  • Hex Nut 
  • Washer(s) 
  • Valve Core 
  • Rubber Grommet 
  • Plastic Valve Cap

My TPMS stem is corroded but the sensor still works. Can I replace just the stem?

  • If you have a 1-piece style sensor, you cannot replace the stem. 
  • If you have a 2-piece style sensor, you can replace the stem and can service the sensors with a rebuild kit.

I have dark tinted windows. Will the tint interfere with the OEM relearn?  

Sometimes tinted windows interfere with the OEM relearn. We recommend rolling the windows down until the OEM relearn is complete.

I have Bluetooth accessories installed in my car. Will those accessories interfere with the OEM relearn?

Sometimes Bluetooth devices will interfere with the OEM relearn. We recommend unplugging these devices until the OEM relearn is complete.

Can aftermarket accessories interrupt the TPMS signal or prevent it from communicating with my vehicle?

Absolutely. Large custom wheels, metallic window tint, certain wireless and/or Bluetooth devices and even a plug-in charger can block the signal creating a constant or intermittent system fault.

I need help!

Give our Dynamic Tech Support a call Monday – Friday 8 a.m. – 5 p.m. ET. at 1.800.805.4058.

How do I program sensors?

Using one of many supported TPMS programming tools, select: YEAR – MAKE – MODEL & Dynamic. The tool will instruct which DVT sensor to use. The tool will program the sensor(s) based on your vehicle. Finish any installation needed, and perform the OE relearn (see the Application Guide for the specific procedure).

Can I simply replace the battery?

No! The battery cannot be replaced. The housing is sealed to protect internal components, so always replace the entire sensor and never just the battery.

What do I do with the old sensors? 

You can dispose of them properly. Make sure to dispose the old sensors at least 100 feet from the vehicle to prevent interference during the relearning of your new sensors.

Can I bypass or disable the TPMS system?

No. 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.”

I replaced my TPMS sensors, and I finally have working sensors, but the registered PSI number is about 3 PSI low on three accurate tire gauges. Is this normal?

Your vehicle dashboard gives you an accurate pressure reading while your shop gauge displays a relative pressure. A conventional shop gauge may display different results based on environmental factors like altitude and weather. The TPMS Pressure Gauge will always display the exact PSI it receives from the sensor inside the tire.

My car has TPMS. I haven’t had it serviced yet at my repair facility. What should I expect when I get there? 

You should expect the following:

  • Service or replacement of any nonfunctioning component of your TPMS sensors 
  • Replacement of TPMS sensor sealing components (cap, core, grommet and nut) 
  • A “relearn” of your TPMS sensors to your vehicle’s computer to program correct positioning of TPMS sensors 
  • Verification that your TPMS system is functioning properly after tire service is complete

Where do I find my vehicles recommended Pounds Per Square Inch (PSI)?

To identify your vehicle’s recommended PSI, check the tire placard. The tire placard is an informational label put on your vehicle by the original equipment manufacturer, normally located inside the driver’s side door frame or doorpost. It may also be on the edge of the driver’s door or the inside of the glove box door or trunk lid. It contains information including the vehicle manufacturer’s recommended tire pressure for your vehicle, the recommended tire size, and the maximum load you should have in your vehicle. This information is also located in your owner’s manual.

Why does tire pressure change? 

Many factors affect tire pressure including ambient temperature changes and tire damage, like a puncture. Tire pressure drops about 1 PSI for every 10°F drop in ambient temperature. Additionally, tires can lose as much as 1.5 PSI per month as air escapes the tire and rim naturally.

What does an under inflated tire look like?

You cannot always tell if a tire is under inflated simply by looking,  kicking, or pressing on the tire. The only way to accurately check tire pressure is by measuring the tire pressure with a quality pressure gauge.

How does weather and temperature affect tire pressure?

Winter tires can wear out if used in prolonged hot conditions, and summer tires have lower resistance in slippery conditions. Customers who invest in seasonal tires will likely ask you when they need to change from their winter tires to their summer tires (and vice versa).

The magic number is 45°F. When temperatures are consistently above that mark, drive on summer tires. When temperatures are regularly below that mark, make the switch to winter tires. During each changeover, a technician should check the TPMS valves and sensors on all of the tires.

How often should I check my tire pressure?

A tire doesn’t have to be damaged or punctured to lose air. All tires will lose air naturally over time, so it’s recommended to check the pressure in all your tires, including the spare, at least once per month. Road conditions, weather conditions or other circumstances may warrant checking the pressure more often. Remember to always use a quality tire gauge when checking tire pressure, and don’t forget the spare! It may not have TPMS but check the pressure anyways in case you need your spare for an emergency.

My warning light keeps coming on. What does that mean? 

The TPMS warning light will illuminate if your vehicle’s tire pressure is too low or part of the TPMS system malfunctioned in any of your wheels. The light will do one of two things:

  • A blinking light means the TPMS is malfunctioning. One or more sensors may have failed or lost communication. Sensor failure may occur due to a dead battery (sealed inside the sensor), damage, or from natural wear and tear. Most sensors last 8 – 10 years.

A solid light means one or more tires is operating at an unsafe pressure. Check your tires immediately.

What are the benefits of TPMS?

TPMS provides safety and economic benefits. TPMS monitors the air pressure in a tire and sends a warning to the vehicle’s on-board monitoring system (on the dashboard) when the pressure drops below a preset limit. By helping drivers maintain proper tire inflation, TPMS can help improve ride and handling, reduce stopping distances and the potential for hydroplaning, increase miles per gallon, and extend tire life.

Why do I have TPMS in my Vehicle?

As of 2007, the United States Department of Transportation (through NHTSA) requires a Tire Pressure Monitoring System to all new passenger cars, multipurpose passenger vehicles, trucks, and buses that have a gross vehicle weight rating of 10,000 lbs. or less (except those vehicles with dual wheels on an axle). The legislation requiring TPMS passed in reaction to Congressional hearings on vehicle rollover deaths caused, in part, by vehicles with under inflated tires.

What is Tire Pressure Monitoring System or (TPMS)?

A Tire Pressure Monitoring System, or commonly referred to as TPMS, is to warn you of at least one or more tires are significantly under-inflated, possibly creating unsafe driving conditions. This indication is made on the dashboard in the form of an ICON or other warning, or both.

Do you have a warranty on your products?

JohnDow Dynamic back shop supply and TPMS products which prove to be defective in material and workmanship within one (1) year from the date of purchase may be returned freight prepaid for repair, replacement or credit at the discretion of JohnDow personnel. If JohnDow inspection discloses no defect in material or workmanship, repair, replacement or return will be made at customary charges This warranty does not cover failure of parts or components due to normal wear or damage, wear which in the judgment of JohnDow arose from misuse, abrasion, negligence, accident, faulty installation, or tampering.

Do you sell direct?

You can find all of our product offerings through popular automotive supply distributors. If you already have a preferred supply distributor, we suggest starting with them to find what you’re looking to purchase. If you don’t have a preferred distributor, fill out this form and we will connect you with the right fit.

How can I reach you?

Still have a question? Email us at, call us at 1-800-433-0708, or fill out this form.

Where do you ship from?

We ship all of our products from our Barberton, Ohio facility, zip code 44203. 

How do I find a distributor?

If you already have a preferred distributor, we suggest starting with them to find what you’re looking to purchase. If you don’t have a preferred distributor, fill out this form and we will connect you with the right fit.