Technical unlock key from ecu

[dagdromer]

I'm not sure if I understand you correct. the engine contol part is done by the ECU sitting next to the battery. the BSI is more or less a canbus junction box that sits under the dash, just below the obd2 port. I do not see the benefits of swapping Ecu and or BSI on this. You need to swap a complete fuel system, engine and wiring harnass then reconnecting the ecu and bsi is the least of your worries. Only thing is that you need to swap the locks over so the key transponders match het BSI. or you need to do an immo off flash in the ECU but still the remote will most likely not work then as the key transponder is preprogrammed using the BSI data from the wrong car. maybe because of the immo off you can get it to work by adding the key in the other BSI.

 

[koalar]

I'm not sure if I understand you correct. the engine contol part is done by the ECU sitting next to the battery. the BSI is more or less a canbus junction box that sits under the dash, just below the obd2 port. I do not see the benefits of swapping Ecu and or BSI on this. You need to swap a complete fuel system, engine and wiring harnass then reconnecting the ecu and bsi is the least of your worries. Only thing is that you need to swap the locks over so the key transponders match het BSI. or you need to do an immo off flash in the ECU but still the remote will most likely not work then as the key transponder is preprogrammed using the BSI data from the wrong car. maybe because of the immo off you can get it to work by adding the key in the other BSI.

I think they want to put the nice dials aircon etc out of the 100hp into the diesel

Which can be done. You would have to wipe the keys out of the ECU and when the car is First switch on it will write the back from BSI. They have to matched set to start the car

Its already all been explained on the thread about putting a 100hp in a 4x4

unless you have a Good understand electronics it will end up as a half finished project as splicing and communication between the two isn't going to be a trival task.

 

[judderbar]

Do you think this would allow a 100HP body computer to work with a Multijet engine? I have a 100HP that was a Cat (whatever) right-off and a Multijet that needs the engine cam chain fixed. Combining the best of both would be a nice idea.

The method I used only works if you copy the EEPROM data to an electronically identical ECU which is using the same version of the ECU programmers instructions. The ECU number and software version number are on the label.

 

[The Panda Nut]

I'm a step further in my quest to get my non working remote button key working again ,see https://www.fiatforum.com/threads/getting-the-vin-number-from-the-ecu.491288/page-2 , but I'm afraid that I reached a dead end.

I've taken the key to several lock smiths and none of them can provide a new working key with the remote in it. They can all clone the normal key for around 75 euros.

One of the lock smiths was kind enough to share his experience and he said that quite often the antenna spool will come off the pcb or the spool itself would fry itself. Unfortunately the last was the case. It took some searching but I was able to buy a new spool and soldered on the pcb. After this the car still did not respond to the remote and would not start with the key. Assuming that the key needed to be relearned into the ECU I fired up MES and went trough all the steps.
the last time I did that with the defect spool it would throw an error stating that the key transponder did not function right but now it told me that this key was marked as locked in the ECU and that it could no longer being used. This means that the key is talking with the ECU so the fix worked but because of its status in the ECU can not be used.
It seems that somebody prior to me tried something with the keys and even tho he got an error on the key proceeded to program the ECU with only 1 working key.

Now is the question can I undo the lock in the ECU for this key?

I am waiting for a new chip from Italy for the Panda key. 29 euros all in. Its just overdue but I have a tracking number. I often look on eBay.it but its a royal pain getting around eBays nannying. If this is successful I will def post about it. I tried reprogramming a Bravo key but the chips are not compatible.

 

[dagdromer]

what chip did you order? a new transponder chip (pcf7936 for the normal or -pcf7946 for the remote control) or a new spool (coilcraft 245) that replaces the one on the remote control PCB? And what tool are you going to use to program the keys? Are you going to make a clone then you need a cloning chip or create an actual new key/transponder? for a new key/transponder you need to pre program the key using the dump from the BSI which you need to get using tools like UPA, XPROG, TANGO, SMOK, ADVI or I/O Terminal. What tool are you going to use to actually pre program the transponder?

I ordered a set of pcf7936 transponders from a dutch site (like 5 euro a piece). I pre programmed them using EFFI and Zedbull with de dump I got from UPA. The dump is correct as the security code matched and when I wrote the dump back into the BSI the car still worked. But the keys where giving an error something like "transponder not valid for car". I'm willing to try again only I want to figure out first where the error is as 5 euro is quite steep for trail and error.