How to Install a TPMS System Yourself

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Using sensors mounted on tire valve stems, a tire pressure monitoring system (TPMS) provides a convenient, real-time view of the air levels in the most important safety components on your RV. A tire pressure monitoring system can warn you of dangerously low tire pressure. But did you know that having your tires properly inflated will not only give you the most control when driving, but also save you money by improving fuel economy?

Installing a TPMS can be a quick, straightforward job that takes about an hour; but not all TPMS are the same, and the task can become much more involved depending on which side of the wheel the sensor is located.

How to Install a TPMS With External Sensors (Aftermarket)

Aftermarket TPMS kits with external sensors are easy to install. This is the simplest DIY method and does not require removing your tires. The trade-off is that the sensor will be exposed to the elements and more susceptible to damage and loss.

What You’ll Need

Aftermarket TPMS kit with a display unit and external sensors
Adjustable spanner (often included with the kit)
Tire pressure gauge

Installation Steps

Mount the display: Plug the monitor into your vehicle’s cigarette lighter or mount the solar-powered version on your dashboard.
Adjust tire pressure: Check your vehicle’s recommended tire pressure (usually on a sticker inside the driver’s door jamb) and inflate all tires to the proper cold pressure.
Install the sensors:
1. Unscrew the valve stem cap from the first tire.
2. Screw the anti-theft locking nut onto the valve stem.
3. Screw on the corresponding sensor (sensors are labeled for each tire position).
4. Use the included spanner to tighten the locking nut against the sensor to secure it.
5. Repeat for all tires.
Check for leaks: Apply soapy water to each valve stem to confirm there are no air leaks.
Monitor your tires: Turn on the display unit and monitor the pressures as you drive to ensure everything is working correctly

How to Install a TPMS With Internal Sensors (OEM)

Installing an entire TPMS system on your rig to OEM standards is a tall order for the average do-it-yourselfer. Beyond the skill and know-how, you’ll need a few pieces of specialized equipment, plenty of working space, and more than a little elbow grease.

If you’re ready to take the dive, here’s how it’s done.

Tools & Materials Needed

TPMS sensor and installation kit – includes nut and washer
Tire machine or bead breaker
Tire pressure gauge
Scissor jack and jack stands
Valve stem removal tool
T10 Torx bit or 13 mm socket
Soap or WD-40
Tire air compressor
TPMS tool OBD-II scanner for reprogramming

Installation Steps

Remove the Wheel: Safely jack up the vehicle and place it on jack stands to remove the wheel assembly.
Remove the Tire: Use a tire machine or a bead breaker to break the bead of the tire from the rim.
Locate and Remove the Old Sensor: Use the correct Torx bit or socket to unscrew the nut holding the sensor to the valve stem inside the rim. Then, use a valve stem removal tool to pull the old sensor out of the valve stem hole.
Install the New Sensor: Apply soap or WD-40 to the new sensor and its valve stem, then use the valve stem removal tool to pull the new sensor through the valve stem hole.
Re-Mount the Tire: Apply a lubricant like soap to the rim and tire bead to help them slide into place.
Re-Install the Wheel: Place the wheel and tire assembly back onto the vehicle.
Inflate and Seal: Inflate the tire to the recommended PSI.
Program the New Sensor: Use a TPMS tool to connect to your car’s OBD-II port and program the new sensor’s ID to your vehicle’s computer.

Important Considerations

Safety: Always prioritize safety by properly jacking and securing the vehicle.
Specialized Tools: The process requires specialized tools for handling tires and programming the sensors.
Rebalancing: Replacing a TPMS sensor typically requires the wheel to be rebalanced to prevent vibrations.
Battery Replacement: For sensors with removable batteries, you may be able to replace the coin cell battery instead of the entire sensor.
Tire Replacement: TPMS sensor batteries generally last five to ten years, while the service life of tires is typically six to ten years. If you’re replacing the battery on the sensor, you may want to double-check the age of the tire as well and see if it’s due for replacement.
Beware of “Hacks” on the Internet: While online videos can be a useful resource, watch out for “hacks” or shortcuts that may lead to danger.

Andrew Cole

After 29 years in the Army, and doing home-improvement projects, I was asked to remodel a camper which quickly turned into a very lucrative business, Knuckleberry Custom Trailers. For five years, I provided clients with completely customized vintage RVs and camper remodels.

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