Build a timeline from normal operation to the fault
Record whether the vehicle was cold or warm, parked for a long period, charging, idling, moving or travelling over an uneven road. Include the selected gear or mode, road speed, AC demand, recent impact and the exact order in which warnings appeared.
Note what restored operation. A restart, jump start, temperature change or longer drive is evidence, not proof of a defective battery or module. Avoid clearing codes or disconnecting the battery immediately before assessment unless safety information requires it.
If the concern is noise, say where it is heard and whether it changes with engine speed, vehicle speed, steering input, braking, body movement or cabin fan setting. A short passenger-recorded video can preserve an intermittent condition.
