battery electrical Archives - UnderhoodService
Hyundai & Kia Hybrid Drivetrain

The Hyundai hybrid system has a motor control unit (MCU) and hybrid control unit (HCU).

Alternator Testing For No Charge Conditions

Many alternator problems turn out to be nothing more than a bad connection at the alternator or a bad wiring harness.

Jump Starting an EV

If an EV with a full battery won’t start, here’s how you can get it up and running.

Shifty Battery Drain

Typically, when you’re doing a parasitic draw test, you watch the meter and wait for the amperage load to drop and the various systems to go to sleep. But on this truck, something was staying awake. Time for a different approach to the problem.