Totally agree with everyone's diagnosis
It has to be the alternator as the exact same thing happend to me I unfortunately ignored the warning that the alt was going bad as the headlights started to go bright and i mean really bright then dim again then one day driving along and all the lights on the dash started to go crazy the instrument cluster filled with smoke and she died. My near new battery swelled like a balloon and was ready to pop.
All up i needed to replace the ECU, ALT, Airflow meter, instrument cluster, stereo, all globes inside and out, most fuses, power antenna and my central locking is still not working and i need a new airbag control box.
Auto elec said something fused inside the alternator and it sent something like 24 volts to everything
Hope it works out better for you than it did me
Cheers
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