Fault in Tyre Under-Inflation Monitoring

[Gianni682]

Hello, I receive an Under Inflation Monitoring Fault while starting the vehicle. No errors are generated for any specific wheel. I took it to a nearby mechanic today, and he stated that he could not receive a signal from any of the wheels.
He proposed replacing all four wheel sensors.

What is the probability of all four sensors failing simultaneously?

Is it possible that the primary wireless receiver device is the issue, or could it be another component?
I would like to verify before proceeding with the payment of €320 plus labour costs.

I also proposed that he simply replace it to determine if it functioned, and he expressed uncertainty regarding its efficacy with only one sensor. Could someone verify if it is operational with only a single sensor?

[johnmayerrr]

Alternatively, you may request the deactivation of the system, provided you can "manage" without it.

[ENVIOclev]

The tires lack pressure sensors. The system identifies variations in the rotation of each wheel via the ABS, but it does not specify which wheel is affected, resulting in the display showing all wheels collectively.
If a tire is deflating, that wheel must complete more revolutions than the others to cover the same distance due to its reduced circumference in comparison to the others.
Ensure that all tyres are properly inflated, which may differ between front and rear if hauling loads in the boot, and thereafter reset the monitoring system.

I cannot specify the exact location of the reset, however it will be found under Driving or a similar category.
Subsequent to that action, the system will only alert you if any tyre pressure falls below the predetermined levels, allowing you to identify the specific tyre, or maybe multiple tyres if unfortunate, and examine the underlying problem.

[bentleygt77]

The 508 is often equipped with internal TMPS sensors in each tire. It is unhelpful that the original poster has not clearly identified the variation he possesses.

[ENVIOclev]

I then remain humble and corrected, laughing out loud.
However, will it still fail to detect which one is out of tolerance?

[bentleygt77]

All is well; many Peugeots utilise ABS, making it a generally sound choice.

[bentleygt77]

Excellent inquiry

[Gianni682]

It is a 2016 Peugeot 508SW Diesel 2.0L turbocharged vehicle.
The system did not indicate any sensor activity; the error message states "Under Inflation Monitoring Fault." I am contemplating whether the monitoring unit might be defective, as I did not receive an error for any wheel.

What is the probability of all four occurring simultaneously?

Instead of speculating about their absence, given that the error indicates a potential issue with the module, I contemplated whether it would be more effective to simply replace one of them, assuming that would resolve the problem.
I apologise for reiterating all the enquiries.

[ENVIOclev]

I recommend reverting to fundamental principles, traditional methods.
Adjust all tyre pressures to the specified levels.
Determine the procedure to reset the monitoring system, including Driving, and execute it.

If the issue recurs, verify the tyre pressures and identify any that have deviated from their inflated state.
I contend that replacing a TPMS valve may necessitate the removal of the tire; nevertheless, it would be feasible to accomplish this by compressing the tire with a large tire fitting tool equipped with jaws, albeit requiring the complete set of equipment.

[bentleygt77]

My data continues to indicate internal tyre sensors; hence

[bentleygt77]

[bentleygt77]

Without diagnostic reading, it will merely be conjecture.
The issue may stem from a depleted battery in one of the sensors or a malfunction in the monitoring ECU, although no faults have been reported thus far.


It seems to be related to internal tyre sensors.
The batteries may be sealed within the sensor, necessitating a complete replacement, or they may be serviceable (though typically not). It is advisable to check if diagnostics can read the battery levels in each unit before determining the next steps. There may be clone sensors compatible with the OEM device; otherwise, OEM options tend to be expensive due to a lack of competition.

[Gianni682]

There is no menu option to recalibrate the tyre pressures.
Does this imply that it use an other system?