Hi everyone I just picked up an 01 Prius. It has it's usual problem with the 7 volt batteries. Not sure how many need to be changed but the car runs great. The previous owner sold it to me with this app that I can monitor the codes. I'm able to delete the codes and the red triangle disappears. Just wondering if anyone else here has this and how long I can keep using the car like this before it really gives me serious problems?