315MHz vs 433MHz TPMS sensors is one of the most important checks before replacing a tyre pressure sensor. A sensor can match the valve shape and OE part number family but still fail if it transmits on the wrong frequency for the vehicle.
Most direct TPMS replacement work comes down to 315MHz or 433MHz sensor compatibility, depending on vehicle make, model, year and market.
A wrong-frequency TPMS sensor usually will not complete the relearn or communicate with the receiver module.
Confirm the OE part number, frequency, valve style and relearn process before fitting the sensor to the wheel.
Why TPMS sensor frequency matters
Direct tyre pressure monitoring systems use sensors inside the wheels to send pressure, temperature and sensor ID data to the vehicle. The vehicle receiver is designed to listen for a particular sensor signal. If the replacement sensor is broadcasting on the wrong frequency, the car may never see it.
That is why 315MHz vs 433MHz TPMS sensors is not a small technical detail. It is a core compatibility item, just like OE part number, valve type and relearn method. A sensor that looks correct on the bench can still be wrong once the tyre is fitted and the vehicle tries to learn the sensor ID.
315MHz vs 433MHz TPMS sensors: the practical difference
| Frequency | What it means for replacement |
|---|---|
| 315MHz TPMS sensors | Common on some North American and imported vehicle applications. Many Australian workshops see 315MHz sensors on specific makes, grey imports, performance vehicles and market-dependent fitments. |
| 433MHz TPMS sensors | Very common across European, Australian-delivered and many later-model applications. A 433MHz listing still needs vehicle-specific confirmation because protocol and OE part number matter too. |
| Dual-frequency or programmable sensors | Some replacement sensors can be programmed to suit different applications, but they still need to be set up against the correct vehicle profile before fitting or relearn. |
| Bluetooth and newer systems | Some newer vehicles use different sensor technology, including Bluetooth-style systems. Do not assume a conventional 315MHz or 433MHz replacement will suit every late-model vehicle. |
Industry service references commonly discuss direct TPMS sensor frequencies around 315MHz and 433MHz. Tire Review notes that choosing the wrong frequency can cause failed relearn or programming, and its TPMS signal coverage explains how sensors transmit ID and pressure data.
Why Australia gets confusing
Australia has a mixed vehicle park. A workshop might see Australian-delivered Toyota, Lexus, Subaru, Volkswagen, Mercedes-Benz, BMW, Ford, Jeep and Holden vehicles in the same week, plus imported vehicles with overseas-market TPMS specifications.
This is where frequency mistakes happen. A global fitment listing might show one frequency, while the Australian-delivered version or a specific build date uses another. The safest approach is to check vehicle-specific data and, where possible, scan the original sensor before removing it.
Practical rule: if a vehicle has a working original sensor, read it with a TPMS tool before replacement. The original sensor ID, frequency, pressure reading and battery status can save a lot of guesswork.
What happens if you fit the wrong-frequency TPMS sensor?
The most common symptom is a TPMS warning light that will not clear. The tyre pressure may be correct, the valve may be fitted properly and the new sensor may even activate on a handheld tool, but the vehicle still cannot learn it because it is not receiving the signal it expects.
A wrong-frequency TPMS sensor can cause repeated relearn failures, no pressure display, no sensor ID registration, or a flashing TPMS malfunction light. The technician then has to diagnose whether the issue is frequency, protocol, incorrect programming, flat sensor battery, damaged receiver antenna, wrong valve assembly or an incomplete relearn.
For drivers, the frustrating part is that the problem often appears after the tyres have already been fitted. That means extra labour, tyre removal and another attempt at the relearn. For workshops, it ties up a bay and turns a routine sensor replacement into a comeback.
How to choose the correct OE replacement TPMS sensor
The best replacement path is not simply “buy a 433MHz sensor” or “buy a 315MHz sensor”. The correct sensor should match the vehicle application as a complete system.
- Confirm the vehicle make, model, year and build date.
- Check whether the vehicle is Australian-delivered or imported.
- Match the OE part number where available.
- Confirm 315MHz or 433MHz frequency from reliable fitment data or by scanning the original sensor.
- Check valve type: rubber snap-in, clamp-in aluminium or special fitment.
- Confirm whether the vehicle needs cloning, OBD registration, stationary relearn or auto relearn.
- Use an updated TPMS tool when programming or diagnosing late-model vehicles.
Automate OE TPMS sensors are built for OE-style replacement fitment, with vehicle-specific compatibility support from MyTPMS. You can also browse the MyTPMS shop if you already know the vehicle application or need to compare sensor categories.
Why OE part number still matters
Frequency is only one layer of compatibility. Two sensors can both operate at 433MHz and still be different parts. The vehicle may require a particular sensor protocol, ID format, pressure range, valve angle or relearn behaviour.
This is why OE replacement listings often include OE part numbers as well as frequency. If you only match the frequency, you may still end up with a sensor that cannot be programmed correctly or cannot communicate with the vehicle after installation.
How TPMS relearn fits into the frequency check
Once the correct sensor is fitted, the vehicle still may need to learn the sensor IDs. Some vehicles self-learn after driving. Others need a scan tool, OBD registration, manual stationary sequence or cloned sensor IDs.
The MyTPMS TPMS relearn guide is designed to help drivers and workshops understand the relearn path by vehicle make. For professional work, TPMS diagnostic tools help activate sensors, read IDs, confirm frequency, program replacement sensors and guide relearn steps.
The Tire Industry Association training material describes TPMS relearn procedures as a core service requirement. NHTSA’s tyre safety guidance also explains that TPMS warning behaviour can indicate low pressure or system malfunction.
Quick diagnosis when the TPMS light stays on
If the TPMS light stays on after sensor replacement, do not assume the new sensor is faulty immediately. Work through the compatibility chain first.
| Check | What to look for |
|---|---|
| Sensor activation | Can the TPMS tool trigger the sensor and read pressure, temperature, battery and ID? |
| Frequency | Does the sensor frequency match the vehicle receiver requirement: 315MHz, 433MHz or another system? |
| Programming | Was the sensor programmed to the correct make, model, year and OE profile before fitting? |
| Relearn | Has the vehicle completed the correct relearn method, including OBD registration where required? |
| Vehicle fault | If the sensor is correct, check receiver, antenna, module, fuse, stored codes and tool coverage. |
Best answer for most Australian drivers and workshops
The best answer is to avoid guessing. Match the replacement sensor using vehicle-specific data, OE part number and frequency, then use the correct relearn path. That is the difference between a clean TPMS repair and a warning light that keeps coming back.
For most MyTPMS customers, 315MHz vs 433MHz TPMS sensors should be treated as a fitment confirmation step, not a product category shortcut. If you are not sure, ask MyTPMS to check compatibility before the sensor is fitted.
Frequently asked questions
Are Australian TPMS sensors usually 315MHz or 433MHz?
Many Australian-delivered vehicles use 433MHz TPMS sensors, but 315MHz sensors are also found on specific makes, imported vehicles and market-dependent applications. Always confirm by vehicle data, OE part number or scanning the original sensor.
Will a 433MHz TPMS sensor work on a 315MHz vehicle?
No. A 433MHz sensor is not normally compatible with a vehicle receiver expecting 315MHz. The sensor may fit physically, but the vehicle will not relearn or receive it correctly.
Can a TPMS tool tell me the sensor frequency?
Yes. A suitable TPMS diagnostic tool can usually activate the sensor and display frequency, sensor ID, pressure, temperature and battery information. This is one of the best checks before replacing a sensor.
Is frequency the only thing I need to match?
No. Frequency matters, but the replacement sensor also needs the correct protocol, OE part number match, valve style and relearn method for the vehicle.
Why did my TPMS relearn fail after fitting new sensors?
Common causes include wrong frequency, wrong vehicle profile, unprogrammed sensor, incorrect sensor ID registration, flat or faulty sensor, outdated TPMS tool software or the wrong relearn procedure.
Need the right TPMS frequency checked?
MyTPMS can help match OE replacement TPMS sensors by vehicle application, frequency, OE part number and relearn process. Start with Automate OE sensors, browse the shop, or use the relearn guide before fitting.