- Charge port
- Onboard charger
- High-voltage battery
- Inverter
- Drive motor
- Wheels
- High-voltage battery
- DC-DC converter
- 12-volt battery
- Computers, lights, and accessories
Electric and hybrid systems
A hybrid uses a gasoline engine with one or more electric motors and a high-voltage battery. A plug-in hybrid adds a charge port and a larger battery. A battery electric vehicle runs only on its battery. All of them still have a 12-volt battery that powers the computers and starts the system.
Common parts
- EV·1High-voltage battery packs and modules
- EV·2Inverters, converters, and drive motors
- EV·3Onboard chargers and charge ports
- EV·4Charging cables and home charging equipment
- EV·5Battery cooling pumps, chillers, and coolant
- EV·6Cabin filters, wipers, tires, and brakes, which are the most common owner purchases
- EV·712-volt batteries for hybrid and electric vehicles
Signs of trouble
A warning about the hybrid or electric system, reduced power, or reduced range should be checked by a qualified shop. A vehicle that will not power on is often a weak 12-volt battery, which is a much simpler fix. Brakes on these vehicles may last longer because regenerative braking does much of the work, but calipers can still stick from lack of use.
Finding the right fit
Charging equipment depends on the connector type and the power your home circuit can supply. Many newer vehicles sold in North America are moving to a common connector, and adapters exist. Tires for electric vehicles are often rated for higher loads and lower rolling resistance. High-voltage parts are usually sold through dealers and need specialized training to install.
Before you order
Start with the year, make, model, and engine, then narrow it down with the trim, drive type, and any option the part depends on. The VIN is the most reliable way to do that, because many parts catalogs and dealer counters decode it to the exact build. If the old part is in hand, its original-equipment number is the best cross-reference. Aftermarket brands publish their own numbers and usually list the original number they replace. Two listings that both say they fit can still differ, so compare the photos, connectors, mounting points, and the notes in the listing. The find the right part guide covers this step, and the all makes reference lists each maker’s official parts catalog.
Once you know the part number, compare the same number across stores. Look past the first price at the core charge, shipping, the return window, and what the warranty covers and who honors it. A remanufactured part, a new aftermarket part, and an original-equipment part can each be the right choice, but they are not the same purchase. The compare prices and warranties guide walks through what to read. Prices on PartIndex carry the date they were recorded, so confirm the current price and fitment with the retailer before you buy.
High-voltage parts are usually marked with orange cables and can cause serious injury or death. Owners should not open or repair the high-voltage system. Leave that work to a trained technician with the proper equipment.