what does "tyre sensors not detected" mean?
16 April 2025
You start your engine as usual ready to set off but notice a warning light on your dashboard saying “tyre sensors not detected”. This warning is your vehicle’s way of alerting you that the Tyre Pressure Monitoring System (TPMS) is not communicating properly with one or more of the tyre pressure sensors. This blog explores what the warning sign means, explains how car tyre pressure sensors work, and offers practical advice on issues such as how to reset the tyre pressure, whether you can turn off the TPMS and how Setyres can help you maintain a safe, efficient vehicle.
Understanding what the “tyre sensors not detected” warning means
When your vehicle displays “tyre sensors not detected,” it means that the TPMS isn’t receiving signals from one or more sensors in your tyres. Each sensor transmits real-time tyre pressure information, playing a key role in making sure that your tyres remain properly inflated. When the system loses communication, it might be due to reasons such as a weak battery, sensor damage, or even an issue with the sensor’s installation.
How do car tyre pressure sensors work?
Tyre pressure sensors are usually located in between the tyre and the wheel trim or are attached to the valve stem and continuously monitor the air pressure within each tyre. They send signals to your vehicle’s central computer, which then compares the pressure against recommended levels.
If a sensor detects that the pressure has dropped beyond a set limit, or if the sensor’s signal is lost, the TPMS warning light will illuminate and a corresponding warning message may also appear to highlight the problem. This system is designed to alert drivers to potential issues before they escalate into more serious problems, such as decreased traction or tyre blowouts.
Common tyre sensor problems and their solutions
|
Common Problem |
Solution |
|
Sensor battery failure |
Replace the sensor: Since individual sensor batteries are not replaceable, a failed battery means the sensor must be replaced. Regular maintenance checks can help prevent unexpected failures. |
|
Faulty or damaged sensors |
Inspection and professional replacement: Have a professional inspect the sensors. If a sensor is damaged, replace it and ensure its correctly installed and calibrated. |
|
Installation or reprogramming issues after tyre service |
Reset and reprogram the TPMS: Use the vehicle’s built-in reset function as described in the vehicle’s manual. If necessary, have the sensors reprogrammed by a professional to re-establish communication. |
|
Software or signal interference |
Software update and diagnostic check: Update your vehicle's computer system if needed and have a specialist inspect the sensor wiring and electronic systems to ensure proper operation. |
How to reset tyre pressure and resolve sensor issues
If the tyre pressure is within the correct range, you might consider resetting it. Most vehicles offer a reset function on the dashboard or in your glove box. Activating this reset function can often re-establish the communication with the sensors if the issue is minor. However, if you’ve tried the reset button and the issue is not resolved, further assistance might be required. This is where Setyres can help diagnose the issue. Book a service with us today.
Can you turn off the TPMS?
While it is technically possible to disable the TPMS system on some vehicles, it is not recommended.
The sensors are in place for your safety, warning you when tyre pressure drops below safe levels. Disabling the system not only compromises your safety but may also lead to legal repercussions and insurance complications. Maintaining a properly functioning TPMS is a key component of vehicle safety, and any issues should be addressed promptly.
How Setyres can help with tyre sensors
If you are not sure how to reset your tyre pressure or the warning sign doesn’t go away, Setyres can help. Our knowledgeable staff can guide you through the process. For reliable service and expert advice, reach out to Setyres today.