Cardog

Thanks very much for these thoughts. I'll try them all & hopefully fix the problem. Ta guys.

After my last service my RC300h would not start. I took it back to the dealer (Jacksons IoM UK) and whined bitterly. They investigated(?) & said it was my fault - I was doing something wrong ... i.e. not locking the car properly when leaving it in my locked garage, or going to post a letter without locking the car when I would be 5' away for 10 secs! After more of my whining they agreed to replace the battery at Lexus's cost. Eventually ... (cos of Covid) ... they replaced? it. (or sed they did.) The problem is still there. The car will start when I put it overnight on my super sofisticated battery charger, but after a few days won't start. I haven't changed my driving habits, the car worked faultlessly untill that last service. I think they did something during that service to make the car stop charging the "house" battery. I don't want, or expect to have to connect my charger every week - this is not a Plug in EV !! Jacksons IoM are starting to treat me like a pain inna butt .... I want my car back to the super reliable Hybred it was ...... Any advice?? Thanks people.