Groovyweda

The wrench and the engine light came on in my 2013 C-max energi. I took it to the dealer and they said the high voltage battery needs to be replaced. They said they changed the computer for it and it didn’t fix the problem. I asked if I could drive the car like a regular car if the battery dies and the service guy said no, that the battery and the engine work together. By what you’re saying, I’m thinking they’re wrong.