I’ve only recently owned this car and it has 150k miles on it. Since casually driving, the warning message ‘check hybrid system’ and engine light came on. Nothing feels wrong with the car and everything seems ok. It still starts and let’s me drive in all mode including EV and charges the hybrid battery, though my partner who was driving the car said the car seemed less powerful. I had a look in the back and noticed the 12v battery is dated July 18th 2009. This battery is 10 years old! Though my question is, how certain can I be that this could be the problem. In ACC mode the car lights and everything works perfect. For it to last this long was it reconditioned or just got lucky with its life span or are they meant to last this long? Will a 12v battery fault cause the ‘check hybrid system’ message. I disconnected and reconnected the battery and the message and engine light came off and I drove it for about 5 minutes. Though I feel driving more it could reappear again. Should I just change the battery anyway before seeing a mechanic to see if the message will reappear again?
The only true way to know is have the codes read . Techstream is one way that is common to do so. Where is Hobart at? Good luck and keep us posted .
"Check Hybrid System" warning can be anything, get the codes read, at dealership it'd be around $75~100. It's a catch-all warning. Do you have anything plugged into the OBD port, constantly while driving. That caused CHS warning on ours. Yes, it's way overdue. For future: you can do a rudimentary check of battery voltage with a digital volt meter, more better with something like Solar BA5. But yeah, replace first.
