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I belive its possible to re code some modules if you have a dealer level techstream. But some modules ie imobilisier and keys require access to an external database.
Ive not done other modules just ecu
You wil! Also need the full service manual, which has the proceedures to change each module. These oroceedures must be ferformed ecaxtly and in sequence
Even without security sync of modules you should be able to access them via can buss. For example the ecu should be accessable via obd port as soon as ignition full on. If not you have other issues like power bad connections or other dead modules interferring with can buss communications
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