سوختن فیوز تغذیه دائم

The fuse on a module's permanent, always-live feed. That supply is what keeps a module's memory and clock alive with the ignition off, so losing it does not stop the module working — it stops it remembering.

The signature is a module that behaves as though the battery were disconnected every time the vehicle is switched off: adaptations lost, clock reset, codes for memory and keep-alive faults on every start. A vehicle that relearns from scratch each morning is describing this, and it is easy to misread as an intermittent module. A fuse is a symptom — find what took it before fitting another, since a permanent live shorting to earth is also a fire risk and will take the replacement too.