In the engine compartment fuse box: #7 is for condensor fan 10amp, #15 is for coolant fan 30amp.
Remember, the coolant fan is triggered by the ECT sensor by the thermostat. Earlier models also had relays on the fan shroud, usually reliable.
If your OEM thermostat fails, it will probably fail in the open mode. This is noticed by very slow heating, watching the instrument panel.
Battery drain? Only if the colant fan runs for an excessive time after the engine is turned off. How old is the battery?
How many miles on the alternator? Could it be worn brushes?
Too bad we don't know which lights came on.
I really dislike these new cars that have no gauges, showing my age a bit!
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My back feels better when I sit in a Volvo seat
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