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Technical FiatECUscan

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Technical FiatECUscan

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Southsea

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Have now got this installed in a Virtual Machine (VMwarePlayer) on my Windows 7 Ultimate 64bit Laptop (Lenovo Thinkpad E520) BUT I don't have access to a Fiat (daughter's car now 130 miles away in Southsea) to be able to experiment.

a/ Can anyone make a simple listing of the sorts of diagnostic/reprogramming function this software interface (with the appropriate OBDII interface) can be used for as a Fiat enthusiast/owner, ie. without a Fiat Main Dealer's access to Fiat Firmware subscription?

b/ Has anyone successfully used it, plus Fiat 4 digit Security Code, to add an additional key (with transponder chip) to the ECU. The fiat system seems to be similar to Volvo but I know that while I can reprogram some settings in the many ECUs in my Vlvo I cannot match/add keys only the dealer can, presumable because a firmware download is necessary.

Please don't let this thread deteriorate into a knock about on the perennial subject of "how do I get a new ignition key" :)
 
Hi @Southsea
1/ You can use Multiecuscan (the current software that used to be called Fiatecuscan) in simulate mode to explore functions away from the car. You should download the latest version of the software from their website http://www.multiecuscan.net/Default.aspx. They have a free trial version. The full version is only 50 euros. To use simulation just select the car model and module as usual, but click the simulate button instead of the connect button.

2/ Multiecuscan (and fiatecuscan) do NOT support key programming. I think this is because of a. people can mess the car up stopping existing keys working and b. possible liability if used for illegal purposes. AlfaOBD does support key programming, and works with fiats. I've used both programs but never had to reprogram a key.

HTH,
Robert G8RPI.
 
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g8rpi said:
Hi @Southsea
1/ You can use Multiecuscan (the current software that used to be called Fiatecuscan) in simulate mode to explore functions away from the car. You should download the latest version of the software from their website http://www.multiecuscan.net/Default.aspx. They have a free trial version. The full version is only 50 euros. To use simulation just select the car model and module as usual, but click the simulate button instead of the connect button.

2/ Multiecuscan (and fiatecuscan) do NOT support key programming. I think this is because of a. people can mess the car up stopping existing keys working and b. possible liability if used for illegal purposes. AlfaOBD does support key programming, and works with fiats. I've used both programs but never had to reprogram a key.

HTH,
Robert G8RPI.
Click to expand...

this alfa obd, do you need a blank key to program or can you get just any key?
 
flisko said:
this alfa obd, do you need a blank key to program or can you get just any key?
Click to expand...

AlfaOBD programs keys perfectly however there are a few things you need to know.

New keys must be either supplied specifically for the car you are programming them to or be prepared specifically for that car. If you try and use a key intended for another car new or otherwise the car will reject it.

All keys for the car need to be programmed at the same time. Including any existing keys. Any not present will be added to a block list in the cars memory and cant be reprogrammed later.

Its imperative the car has good battery voltage for programming. If the battery is low then programming can fail. If your lucky you will be able to start the process again. If your unlucky then you run the risk of deleting all the keys.
 
flisko said:
i mean, i got totaled punto with 2 keys, and a working one with just 1 key, can i take those 2 other keys and program it to my working car?
Click to expand...

Unfortunately no you can't. The keys have information relating to the car they are intended for already programmed to them. If this information is not present or is wrong then the car will not accept them for programming. So you cant use keys from another car unless you want to go the extent of swapping over the ecu and body computer as well.
 
flisko said:
yea i thought you can erase and reprogram it again
Click to expand...

Potentially yes that can be done. If the keys have chips in that were produced after 2003. However to do that you will need a transponder programmer capable of unlocking them. Then once they are unlocked they will need to be prepared for the car you want to program them to. To do that you need to be able to read the information required from the
cars body computer. If you had the equipment to do that then you would have no need for AlfaOBD to program keys.
 
minirib said:
No you can't use them the chips in the keys are car specific.
Click to expand...

Hi,
I'm suprised by this. All the systems I know of program the car with a list of valid keys. The key transponder (apart from the latest types) just returns a number when interrogated. The number is nomally programmed at manufacture and is essentially random (it's a long number and some parts are the same and restricted to certain customers etc. This is why you can't use a Fiat key on a VW). To add a key to a car the list in the ECU is updated to include the new number. Some transponders can be programmed with any number, after it is fitted to the key. this is how Timpsons etc can make a copy without accessing the car. They read the code in one key and make a "clone" transponder. Both have the same number so the car accepts both.
I don't have a Punto and have not done this with Fiat keys, but I am an electronics engineer and have used these components professionally in a number of applications.
I think you may be combining the two ways of making a new key.
It is certainly worth trying adding the keys from the other car.

Robert G8RPI.
 
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g8rpi said:
Hi,
I'm suprised by this. All the systems I know of program the car with a list of valid keys. The key transponder (apart from the latest types) just returns a number when interrogated. The number is nomally programmed at manufacture and is essentially random (it's a long number and some parts are the same and restricted to certain customers etc. This is why you can't use a Fiat key on a VW). To add a key to a car the list in the ECU is updated to include the new number. Some transponders can be programmed with any number, after it is fitted to the key. this is how Timpsons etc can make a copy without accessing the car. They read the code in one key and make a "clone" transponder. Both have the same number so the car accepts both.
I don't have a Punto and have not done this with Fiat keys, but I am an electronics engineer and have used these components professionally in a number of applications.
I think you may be combining the two ways of making a new key.
It is certainly worth trying adding the keys from the other car.

Robert G8RPI.
Click to expand...

Fiat do things a little differently to most. If just taking the Megamos 48 crypto transponder as used on the mk2 Puntos as an example. You can take one off the shelf and program it to lots of cars many VW's use exactly the same chip and up to around 2005 you can program it to the car as it comes from the factory. This is because you program an unlocked chip to a VW and the car writes the required information into the chip locks it and writes the chips ID to the car. When you program the chip to a Fiat the chip is already locked and already contains the required information. Only the chips ID is written to the car the car does not have the ability to write back to the chip so the required coding needs to be on the chip first. The chip works on a challenge and response basis if the crypto keys in the chip are wrong then it will never give an acceptable response and the car will always reject it.
 
g8rpi said:
Understood,
but the OP has a key for the same model of car so the number format should be correct. AFAIK the car cannot write to the key. As usual, for security, the details are not released.

Robert G8RPI.
Click to expand...

Each mk2 Punto has its own code they are different for every car. This is why you cant just use an off the shelf key. It has to be ordered by vin.
Most manufacturers don't do this (although VW also do it on most models from June 2006)
You can prepare the chips for programming without going through the dealers (Which I do daily) but to do so you need to obtain the coding for the chip from the body computer. Which requires the ability to read the 93lc66b eprom that stores the key data.
If any one wants to do there own and has the tools to read the eprom themselves. Then i'm happy to give them there cars pin code and the precoding data for the transponder chip. Although I must stress only if its something you are confident doing. If you balls it up your car wont run. The chip also needs to be read out of circuit as there is a high risk of corrupting the data if read in circuit.
 
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