Hi everyone, I'm Paul from London/UK. Does enyone know what's the procedure to follow for replacing a few cylindrical battery cells from my Prius 1999 reg.? I've got a warning light on, the red car with a excamation sign in the midle and as I read in the owner book, this is about hybrid system. I'm sure this can be done at home, but I need to know what steps to follow. Thank you very much for your help!!! Paul