2008 not driven 11 days, now red triangle and more

Our house sitter forgot to drive my 2008 Prius as agreed while I was out of the country, and when I tried to start the car yesterday I got an array of lights including the infamous triangle and I was unable to start. Today I "reset" a connector to the 12v and was able to start up right away, but within a minute of slow driving around the yard the red triangle is back on. Despite trying different readers, I have had limited success with ODB diagnostics. I'm not able to change out hybrid battery modules or do anything other than the basic wiring and mechanical repairs (the most advanced thing I've managed has been to remove, disassemble, clean and replace the hybrid battery fan a couple of years ago, if that is any indicator of what I can do myself). Can anyone point me to a similar poster situation or thread, or recommend what I steps I can take at this point? Thanks so much to this community for keeping me and Sydney (the Prius) rolling since 2016..!!

 

Hi @JC91006 , do you know if I can have a local mechanic provide me with a readout of the codes or can you recommend another approach for my situation?

 

Hi @bisco , I was gone for a month, but our house sitter drove it twice during that time and she said there was nothing amiss. She last drove it 11 days before we returned. I just found an independent mechanic who has dealt with this issue and regularly works on older hybrids, I will try to drive it there (about 5 miles) tomorrow. I'm still interested in any suggestions or advice in the meantime! Thanks.