Hello to all of you, I am new on this forum. As my name says ILoveFiat. I found this forum googling for a parts diagram of a Fiat 500L and indeed found it. Nice! At this moment at our house there are 4 Fiat's, a 2003 Punto, a 2008 Bravo, a 2018 500L and a mobilhome with a Ducato 230 2.8JTD engine (2003). It is always nice to talk about Fiat and to share and exchange knowledge, I think this forum is a good place to do that.
Hi all, I'm new here!
- Thread starter ILoveFiat
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Hi all, I'm new here!
The Panda Nut
Nutty about Pandas Infected by Panda virus and OPD
Welcome to the forum. Your family sounds very wise with their choice of transport.
Welcome from me too up here in a cold Scotland!
The forum is, in my experience, a nice friendly place with lots of knowledgeable people to ask for help from.
Tyrepressurestressed
New member
Hello everyone. New to the forum and hoping I am not alone with a problem I have with my Fiat 500 Dolcevita. I have had it since September and whenever I get to speed on a motorway I can guarantee that the TPMS will trigger. Having bought it 2nd hand with a guarantee I have taken it back to the dealer 3 times and they haven't identified the problem. On the last visit they replaced a brake caliper that they thought was sticking but that has made no difference. There is no problem with the tyre pressures but it is just very annoying. Never triggers when driving around town but on the few occasions I get up to the legal speed limit it will ping at me. Never after the same amount of time or distance to the point where we now play a game of guess how far we can go before it pings!! I have driven various Fiat 500 as am a named driver on both of my daughter's 500s and they have never experienced this. Am I alone or can anyone shed some light on this annoying niggling fault? Thanks for your time peeps.
Hi and welcome. Can I recommend you try posting in the appropriate thread as more relevant prople are likely to see it.
However, with the symptoms you describe and the garage having had a number of attempts at it it's probably something obscure which isn't showing up when the system is electronically interrogated. Garages are so focused on what the Electronics store as recorded faults -DTCs (Diagnostic trouble codes) that they are not so good at tracking down stuff in the old ways.
Does your system identify which wheel is throwing the code (causing the light to illuminate) ? If so, is it always the same one? I'm presuming the garage will be checking for codes each time but probably finding nothing so just checking tyre pressure and resetting the system? If it's always the same tyre which is causing this warning light then take a very careful look at that tyre. Firstly jack it up and spin the wheel while observing it for any irregularities. You're looking for run out and out of round in particular but also anything which looks "odd". Is the tread relatively flat or has it "crowned out" by which I mean is it shaped a bit more like a motor cycle tyre? Compare it with one or two of the other tyres. Being a man who spent time professionally with tyres I've seen some pretty unusual things and what I'm wondering here is whether the tyre is "growing" in diameter at speed, not common, but I have come across it. If it's doing this that would increase the rolling diameter at speed which might be enough to trigger the warning as it would reduce the expected rpm of that wheel in relation to the others. Of course this only applies if your TPMS works through the ABS by comparing wheel RPM, which I believe the 500 uses? If you've got individual valve mounted pressure monitors in each wheel then the above is irrelevant I'm afraid! Wouldn't harm to take a really close look at the tyres though. I wouldn't have thought that a sticky caliper could have produced a TPMS activation regardless of the system in use?
Good luck and do please update us on the outcome?
Edit. Good quality tyres or "cheap and cheerful?
The Panda Nut
Nutty about Pandas Infected by Panda virus and OPD
Its important to check ALL tyre pressures and then perform the system reset via the cars computer. The ECU can adapt to the pressures bein g all as they should be and should stay set.. DOnt reset without first making sure the pressires are all correct and done precisely. Both our 2016 and 2017 cars have lit up the light on a number of occasions. Dont ignore the system though as it may very well indicate a problem. If this occurs at speed I wonder if the tyres are all same make and age or a mixture that change differently as speed and heat builds up, causing differences to set the light off.
