fiat maera td125 immo fault

[busaman]

i have a customers 1998 fiat maera td125 coming in monday that starts from cold every time, but once its been running for a while and you turn it off it will start if you leave the ign switched on, but if its turned off for a few minutes it wont start until cold and every time it wont start the key light is illuminated.

[nutloose]

you could try
from cold.
ignition on.
then heat up the im*o with a hot air gun and see if that stops the key recognition.
then try the ecu or any other related module.

sometimes condensation can cause this type of problem

[speed king]

Adding to nutloose theory, it could also be the circuitry in the im*o affected by the heat., possible damage to the tracks?
SK

[rsibiza]

i have a customers 1998 fiat maera td125 coming in monday that starts from cold every time, but once its been running for a while and you turn it off it will start if you leave the ign switched on, but if its turned off for a few minutes it wont start until cold and every time it wont start the key light is illuminated.



This is a great problem on fiat cars.

Replacing immo reader does not always help or help for long time.....

My marea has same problem,when you try 3-4 times it starts.

If its euro 3 you can turn off immo into ECU,if its euro2 you cant turn off immo code.