Can someone help,
I’ve got my brothers Lexus is300h in my drive as he’s working away,
the auxiliary battery in the boot keeps discharging so I disconnected it took it inside and gave it a deep state charge.
when I reconnected it the alarm sounded, lights flashes and dash lights all flashing at random,
eventually got alarm to silence but all lights on dash flashing as if something needs reset,
When I press the start button it asks me to press the brake and press the start again, the hybrid system tries to fire up on the screen but won’t fire up nor the engine start, it reverts back to various dash lights, hazards flashing and horn low tooting
any idea how I reset things?
thank you Andrew