We had trouble with my wife's Prius with a flat battery after 4 days, but it turned out that one of the cells in the 12v was knackered. Car is 2016 so 12v not too ancient, no idea how long it was like that as until lockdown it was on the road every other day at least.
Service manager at Toyota said that Toyotas 'wake up' when the key is nearby so if a key is stored by front door near the car, this can apparently cause an additional drain, though Toyota recommend running the car for I think it is an hour every week. Service manager said he wouldn't rely on the 12v doing 2 weeks.
My Auris hybrid has been fine, though longest it has been left is 11 days. 12v is charged by the engine so I was told, hence the advice to leave it running for an hour a week, hybrid battery by braking/engine.
|
