Technical Lost my car. Won't start with key

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Technical Lost my car. Won't start with key

SerkaFox

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Sep 9, 2024
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Hello everyone. The engine was running rough, I calibrated it and it started working fine. I turned everything off and left it overnight, in the morning I saw the same situation as in the video. I didn't do anything with the electrics, I didn't touch or change anything, I just cleaned the injector and that's it. I called the dealers - they don't know what to do, because they have two more cars in the same condition. It just doesn't start or start. Previously, I would insert the key and it would start right away, but now even turning the key is blocked, you have to press the button on the side. Any ideas or thoughts on what can be done? I don't want to send such a good car to the dump.
 
Model
Fiat Croma
Year
2009
Looks like the key is not being recognised. Do you have the second spare key to try?
Unfortunately no. Only one key and it was recognized before and everything worked. Could the key receiving antenna or something similar be damaged?
 
Unfortunately no. Only one key and it was recognized before and everything worked. Could the key receiving antenna or something similar be damaged?
Could be. I seem to recall in some old post some time ago there was at least one failure of the key unit system. I never had this problem with my Croma 2005 in the 10 years that I had it.

Suggest you get some diagnostics read looking for and fault codes that may be logged.
 
Could be. I seem to recall in some old post some time ago there was at least one failure of the key unit system. I never had this problem with my Croma 2005 in the 10 years that I had it.

Suggest you get some diagnostics read looking for and fault codes that may be logged.
I would run diagnostics, but the system does not start and does not work. How can I test it?
 
I would run diagnostics, but the system does not start and does not work. How can I test it?
You say the system does not start but in the video there is power to the dashboard, clock is there, etc. so there should be power to the body computer/ECUs and the EOBD socket. If there was no power to the body computer etc. then the key would never work in the fist case.
 
You say the system does not start but in the video there is power to the dashboard, clock is there, etc. so there should be power to the body computer/ECUs and the EOBD socket. If there was no power to the body computer etc. then the key would never work in the fist case.
That is, if there is a clock and the system blinks as in the video file, then you can connect the OBD2 connector and check?
 
That is, if there is a clock and the system blinks as in the video file, then you can connect the OBD2 connector and check?
Yes you should be able to connect to the OBD2 port. Clock and system blinks will be controlled via the body computer to which the EOBD port connects.

Just try and see what results you get.
 
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