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This sensor is present in other fiat models: fiat 500 x fiat 500 fiat 500 l or fiat 124 spider - you have to look here - this sensor is the same in stelvio. You have to buy the original OE because replacements very often do not work
 

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Discussion Starter · #47 ·
Ordered the one you recommended, will see how it goes. Meanwhile today my faulty sensor decided to work properly. but I don't trust it anymore.
Don't worry about the one in your vehicle right now working and not working. Mine did that, somedays it would read -5F with 85F being the real temp. Other times it would read 95F with 85F being the real one, other times it would read true temp., then it would go to 27F, and so on. A few weeks ago it settled where it would read no less than 58F and no higher than 76F.I have the new one at home, been procrastinating changing it. As it is right now I can use the A/C which is all I care. Ambient temp. I have lots of apps in my phone and iWatch that give me that info, if I need it. I live in PR, ambient temp 90% of the time is either hot or too hot, with the other 10% being thank God it's not a hot day.
 

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Discussion Starter · #49 ·
It still working properly, I just wondering if the silicon spray I put on is the reason.
Didn't do a thing for mine. Funny thing, the day it started to fail the car started rough as if it didn't have enough voltage, but started, Auto Stop-Start function didn't work for awhile, obviously the car'a ECU won't allow that function until the battery has full charge again. After that day it didn't happen again. Last Thursday it didn't start in the morning, jumped it and started without much hesitation. Used it all day without issue, but decided to get a new battery, good call as my Stelvio had the original 2018 Mopar battery; good run for a battery. So, installed a new DieHard Platinum AGM battery. Well, after installing the new battery the ambient temperature sensor has been working perfectly, reads temp pretty close to real and correctly goes up and down according to outside temp. So, now I'm wondering if the issue corrected because the system reseted when swapping batteries or if the problem was a voltage issue caused by the previous battery not keeping proper voltage. Oh well, it's a Chrysler product, only time will tell; I've owned many Chrysler and Jeep vehicles as to know that all my Chrysler vehicles have had an electrical Gremlin that gets to work every now and then. Always been lucky enough to be able to fix them. If it starts to give problems again I have a replacement sensor in my garage waiting.
 

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Didn't do a thing for mine. Funny thing, the day it started to fail the car started rough as if it didn't have enough voltage, but started, Auto Stop-Start function didn't work for awhile, obviously the car'a ECU won't allow that function until the battery has full charge again. After that day it didn't happen again. Last Thursday it didn't start in the morning, jumped it and started without much hesitation. Used it all day without issue, but decided to get a new battery, good call as my Stelvio had the original 2018 Mopar battery; good run for a battery. So, installed a new DieHard Platinum AGM battery. Well, after installing the new battery the ambient temperature sensor has been working perfectly, reads temp pretty close to real and correctly goes up and down according to outside temp. So, now I'm wondering if the issue corrected because the system reseted when swapping batteries or if the problem was a voltage issue caused by the previous battery not keeping proper voltage. Oh well, it's a Chrysler product, only time will tell; I've owned many Chrysler and Jeep vehicles as to know that all my Chrysler vehicles have had an electrical Gremlin that gets to work every now and then. Always been lucky enough to be able to fix them. If it starts to give problems again I have a replacement sensor in my garage waiting.
Mine is 2018, I just wondering if it's time to get a new battery.
 
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