CAR - Certified Automotive Recycler Electric & Hybrid Vehicle Processing Questions and Answers

Question 1

A recycler receives a hybrid vehicle with front-end collision damage.
The 12V battery is accessible, but the high-voltage service disconnect is under a damaged panel.
What is the mandatory first step for the technician before attempting any repairs or dismantling?

Accepted Answer

Disconnect the 12V battery and wait the manufacturer-specified time for the HV system to de-energize.

Answer

Use a pry bar to immediately access the high-voltage service disconnect.

Answer

Begin draining the engine oil and coolant to get them out of the way.

Answer

Visually inspect the orange high-voltage cables for damage.

Question 2

When processing an electric vehicle, what is the primary purpose of the components identified by bright orange-colored cabling?

Accepted Answer

To carry high-voltage current between the main battery, inverter, and motor.

Answer

To control the vehicle's infotainment and navigation systems.

Answer

To power standard 12V accessories like the radio and headlights.

Answer

To transmit data between the vehicle's various low-voltage computer modules.

Question 3

Which of the following represents the most critical and immediate safety risk associated with storing a high-voltage lithium-ion battery that was removed from a physically damaged EV?

Accepted Answer

The potential for thermal runaway and subsequent fire.

Answer

The slow discharge of the battery, rendering it unusable.

Answer

Minor corrosion forming on the battery terminals.

Answer

A gradual decrease in the battery's overall state of health.

Question 4

A technician has successfully disabled the high-voltage system and removed the main battery pack from an EV. The battery pack appears undamaged. According to best practices, how should this battery be stored while awaiting sale?

Accepted Answer

In a designated, dry, temperature-controlled area away from flammable materials.

Answer

Outdoors on a pallet, covered with a waterproof, non-flammable tarp.

Answer

In the main parts warehouse alongside internal combustion engines and transmissions.

Answer

Stacked vertically with other EV batteries to conserve floor space.

Question 5

When preparing to ship a large, end-of-life lithium-ion battery from a hybrid vehicle, what is a primary requirement under the U.S. Department of Transportation (DOT) regulations?

Accepted Answer

The battery must be properly packaged, labeled, and declared as a Class 9 Hazardous Material.

Answer

The battery must be fully charged to allow for testing upon arrival.

Answer

The battery can be shipped via any standard freight carrier without special documentation.

Answer

The battery's terminals must be cleaned but can be left exposed if the outer case is intact.

Question 6

Which piece of Personal Protective Equipment (PPE) is uniquely essential when a technician must work on or near potentially energized high-voltage components of an electric vehicle?

Accepted Answer

Class 0 insulated lineman's gloves with leather protectors.

Answer

A standard full-face grinding shield.

Answer

Cut-resistant sleeves.

Answer

Steel-toed boots with a puncture-resistant sole.

A recycler receives a hybrid vehicle with front-end collision damage.The 12V battery is accessible, but the high-voltage service disconnect is under a damaged panel.What is the mandatory first step for the technician before attempting any repairs or dismantling?

A recycler receives a hybrid vehicle with front-end collision damage.
The 12V battery is accessible, but the high-voltage service disconnect is under a damaged panel.
What is the mandatory first step for the technician before attempting any repairs or dismantling?