430 Us odometer displays km instead of miles

Hi mine is doing the same thing. It was having some work done and there must've been a random voltage spike or something that converted the instrument cluster over to European version rather than the US. Is there a big amber X in the LED panel that usually shows clock temperature and warning lights etc.? Generally speaking as far as I understand it, this has to be a dealer reset with a Ferrari SD 3 computer (dealer item) since it involves mileage. The mileage is recorded on your car electronically and if it can get converted back to USA version, it will show the actual US mileage.

I have an appointment with the dealer in St. Louis to convert mine back from the European version to USA version but it manifested itself with the big amber X in the LED panel on the 430. I hope this helps. There's really nothing else that can be done. It's a dealer option to converted over otherwise. It is very secretive. If it weren't, then everybody would be rolling back there miles having access to that side of the instrument panel. If you are not near a dealer then there is a company called the FAI http://ferrarioc.com/?page_id=94.. See if you can find a dealer first is my best guess. Again, it's the the usual Ferrari issues that raise their head from time to time. I will Post a follow-up on my experiences after my dealer appointment on March 31.

 

You could also use the search feature in detail for ideas:

https://www.ferrarichat.com/forum/threads/x-in-warning-display-360-challenge-stradale.360523/#post-141302525

 

Eric355 can possibly help. I had a corrupt dash on a customers 360 (very similar to 430 dash) and he helped me reprogram miles back to km and correct the odometer. I pulled the 8 pin eeprom and read the .bin file and emailed it to him. End solution was we needed another "good" .bin from an identical spec donor car and he adjusted the odometer reading in that file and I programmed it back into the original dash. The donor car needs to be identical spec, spider/coupe, manual/F1, carbon/steel brake etc.

This is a somewhat common fault. Appears as either a big red X, or dash specs revert to some kind of factory default - missing mileage, revert to F1, km switch to miles etc. Cause - low battery attempted start, or a jump from another car or backup battery.

Never, ever, attempt to jump start these cars. It's a roll of the dice every time you do it. If you think you may have a low battery DO NOT turn the key.

 

Follow-up on Big Red X on instrument cluster. Just came back from the dealer to get this anomaly reset. Big PIA. what was supposed to be a simple computer reset turned out that the dealer (new) had the Ferrari computer SD3, but they tell me they have to get it connected in Italy from the factory for a internet connection so the factory can reset it remotely from Italy, since it involves the odometer etc. Had to leave it overnight, rental car loaner to get home and back the next day, and additional hours of labor to make the software connection in Italy. The factory was closed by the time I got it into the dealer. Nobody knows what causes there glitches, but since it is a Ferrari, it "builds character, and strong men." It also commands the Ferrari Tax and you should expect that, and be honored to pay that since you own one. Well, at least it is fixed and everything else checked out on the car.

 

We know exactly what causes it. The engineers designing the dash made a very poor effort of brown out reset protection on the digital dash EEPROM and micro. It's technical speak, but to summarise an engineer would learn this on day 1 of microcontroller circuit design. The EEPROM data should always be protected from power spikes and drops and shut down gracefully if there's a problem. The memory can become corrupt if there is a data write happening at the time of the brownout (an attempted flat battery startup for example could cause this). It's all very easily implement in the circuit design. Not the only example of rookie electronic engineering mistakes by Ferrari unfortunately, and they rub salt in the wounds when charging for a repair due to their questionable design practice.

Great that your car is fixed though.

 

So what do you do? Never start the car again

 

With a flat battery, that's correct.

 

Absolutely.. I would hope that the newer models would not have this design problem. The engineers learn at our expense. Too bad they don't issue a retrofit for this problem, but the car is 17 years old now and eventually there will be no parts or services available. Thanks for the explanation.

Moral of the story, watch your battery condition like a hawk, and always leave it on a charger when not driving. I suspect my mechanics thought it had a good battery and had left it off a charger a few days and then tried to start it . The battery had a complete discharge to about 10 volts resting before a recharge in its past history and I'd bet it never fully recovered its full capacity. It then sat during repairs and them bam! . attempted start scrambles the EPROM.and other UCU's thus wreaking havoc. I now have one of those bluetooth battery monitors and they are great.They tell and show the complete story about what the voltages are. I hope to avoid repeating this expensive glitch

 

Temperature reading in C now as well?

 

It was, as it defaulted to Europe setting. The Dealer was able to reconvert it to the USA settings. It was 3 hr labor because had to go through the gyrations to connect with the factory in Maranello to reset the instrument cluster by software hookup.and the internet ddirect link with the factory. Apparently, only the factory can do this.

 

As long as you don’t have the big X on the display window you may be ok. With my issue nothing would display in the window except C temp and km for odometer readings. Then it would revert to the big X.


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