Thanks for your help. I took my car to the dealership, where they discovered faulty wires in the solenoid system. That was the root of the problem. I also had my oil changed, and everything is now working properly. Thank you again!
My Ioniq Hybrid battery isn't charging properly. The battery drains quickly, and the gas engine fails to charge it sufficiently. The check engine light occasionally shows with code P0011. Has anyone else experienced this problem?