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Old 06-06-2020   #1
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500 Lounge ECC complete failure

Hi All
Very glad to have found this forum and hope you might be able to help with some advice.

We've got a 2015 500 Lounge which we have owned since new. It's only got 4900 on the clock but just recently the Electronic Climate Control (ECC) failed completely. Nothing works, no lights, no fan, no demist no heater....it's dead.
All fuses have been checked and are good as is the relay.

A local non Fiat specialist put it onto his DTC machine and read off an error code U1710-87 which says "Ecc (Electronic Climate Control)-Missing Message" so there is a communication problem with the main control unit. This week we took it to a Fiat main dealer (an hour from where we live) and the told us what we had already told them in that the car has an error U1710-87 and there is a communication fault. For this pleasure they allowed us to pay them 90. It gets worse.....to investigate further they want another 370 to take out the dashboard then might need to replace either or both the ECC control unit or the main control unit which will be an additional 1500 odd!

Does anyone have experience dealing with Fiat UK on out of warranty compensation claims? With so little mileage on an otherwise immaculate car we are dispairing to know what to do about this.
Any suggestions that are legal would be most appreciated. Illegal one's may be considered too
Thanks,
Stay safe everyone.
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Old 06-06-2020   #2
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Re: 500 Lounge ECC complete failure

Hi and welcome

Being such low use.. has it had a battery fail.. ?this in itself can cause weird issues...


Ok.. moving forward.. where are you based?

There are some excellent specialists around ..and a few good FIAT workshops

People in here can advise you further

Charlie
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Old 06-06-2020   #3
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Re: 500 Lounge ECC complete failure

Hello and welcome to the forum.

Sorry it's in such sad circumstances.

Firstly, condolences - this is not a nice problem to be facing, and not what most folks would be expecting on a low mileage car.

It's no consolation for you, but I think this is the first time this specific fault has been reported here. There is a known, and potentially even more costly, weakness on models with automatic climate control (the blend door issue), but that does not normally present itself as a total failure of the unit to power up or even be recognised by the CAN network.

Faults like this can't be diagnosed from a keyboard. It could indeed be a failure of an electronic module, or it could be something as simple as a loose connector or a blown fuse.

Can you give us a bit of history please? Are you the first owner, and where has the car been kept overnight? If this hadn't happened, how long were you planning to keep this car?

Whatever the ultimate cause, I'd expect a franchised dealer fix will be costly; their labour rates aren't cheap, and these sort of marque-specific parts bought new cost a small fortune.

An indepedent Fiat specialist would likely be a better choice; labour rates will be less (perhaps a lot less), and they could likely source any needed parts on the secondhand market for a fraction of the main dealer price.

You can always try calling Fiat Customer Services to see if they will consider making a contribution to the repair cost, but don't get your hopes up on a 5yr old car that's now well out of warranty.
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Old 06-06-2020   #4
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Re: 500 Lounge ECC complete failure

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Old 06-06-2020   #5
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Quote Originally Posted by Al D View Post
They are between Portsmouth and Winchester..

Op. is SOMEWHERE in the UK
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Old 06-06-2020   #6
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Re: 500 Lounge ECC complete failure

Hi, no chance of any claim, given its seriously low usage, has the car battery ever been replaced?

I suspect a simple fault disguised as another, as JR says whats the usage been like the last few months?

Dare I suggest a new battery and full Proxiy alignment(gets all the ecus talking together)
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Old 06-06-2020   #7
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Re: 500 Lounge ECC complete failure

hi folks ,
Thanks for the nice welcome. I wish it was under different circumstances too. Up to now we have loved this little Fiat 500 so I really hope we can reignite that love affair.

To answer some of the questions , Yes we have recently had a new battery in the car. The old one wasn't holding charge. It was replaced a week before we noticed the problem with the ECC. We mentioned this to the Fiat dealer but they said they had never heard of a battery replacement causing any such issues. That's why I didn't even think to mention it here initially. Very interesting that a couple of people here are pointing to that being a possible issue.

The car generally lives in our garage so not exposed to the elements or nesting birds etc. We've owned it since new and no plans to get rid of the car ....at least until this happened there wasn't. It doesn't get used very much. It's a little run around 2nd car.

We are located in Buxton Derbyshire so Portsmouth would be a bit far to take the car for this unless it was a dead cert to have it fixed. I'm sure we could find a B&B at the seaside if necessary!
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Last edited by Purple Gecko; 06-06-2020 at 21:27.
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Old 06-06-2020   #8
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Re: 500 Lounge ECC complete failure

Thanks for the additional information.. it all helps

Battery getting tired..

Unfortunately all the electronics on modern cars need a stable power supply

The Power steering is a favourite consumer of vast electrical power.. if any component.. or network gets starved of power it will log a fault.

My Experience of current approved FIAT dealers is poor... multifranchise a lot of the time..

They like to 'throw parts at a problem' as it isnt them footing the bill..

Similar to ECU issues.. its often the act of teconnecting and tesettimg that fixes the underlying problem.. not the 600 component.

Find a local AlfaRomeo specialist.. they will have the correct kit..and attitude.. backed up with a wealth of experience

Charlie
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