Is it possible to disable this as Michelin state my front tyres should be 79psi and it's like driving an upholstered rollerskate! :slayer:

Love the analogy

For X290 multiecuscan has options to set the reference pressure for TPMSso you may be able to fiddle it that wat not sure if it will allow enough adjustment though it says 2800-3200mbar only.

corcai said:

Love the analogy

For X290 multiecuscan has options to set the reference pressure for TPMSso you may be able to fiddle it that wat not sure if it will allow enough adjustment though it says 2800-3200mbar only.

Click to expand...

Are you sure about those figures because 3200mbar equates to just 46psi?
It's a 2017 model X290 Maxi

The notes in Multiecuscan indicate that the values should lie in the range documented above.

I haven't got TPMS on my X290, so I can't try in real life, but using Multiecuscan in "simulation mode" it doesn't reject values outside that particular range. (it will execute to completion without an error)

Whether they would stick in real life, however, I can't vouch for.

...you could always post your approximate location, and see if there is anyone nearby with multiecuscan that would give appropriate values a try on your 'van.

Thank you to both HughJampton and corcai for your comments.
I have looked at the Multiecuscan website and it looks like I could set up a interface and software licence for about £85, so I might have a go at this but only when it's out of Warranty!
I am located in East Devon
Once again, thanks for the suggestions.

I completely understand the stance on warranty, though, with my experience of driving 'vans on camping tyres at the Michelin recommended pressures, I think I'd be inclined to take the chance (If I were convinced that appropriate values could be set through Multiecuscan).

However, the software provides overwhelming evidence that the TPMS alarm pressures can be varied within the appropriate module, and if Multiecuscan can do it, I've little doubt that dealer diagnostics can as well. If you can define a desired target pressure, you might want to ask a Fiat professional dealer if they would do the reset, thereby not risking any warranty. (Though you might have to sign a disclaimer given Michelin's stance on required PSI).

Another thing that might be worth trying is reducing the pressure to the point where it just exceeds the alarm margin (but carry a footpump with you ) Postings elsewhere for motorhomes based on the Peugeot Boxer seem to indicate that the margin is quite large, and you may be able to reduce the pressure quite a bit without inducing an alarm.