Why must the battery be disconnected before airbag work?

Why must the battery be disconnected before airbag work?

• A. To protect technicians from shock
• B. To allow safe airbag service
• C. To illuminate diagnostic trouble codes
• D. To prevent accidental deployment

Answer: (D)

The main idea is that airbags are powered by the vehicle’s airbag system and can deploy if that power is present or if a fault is triggered while you’re working near the system. Disconnecting the battery removes the energy source from the airbag control module and inflators, which greatly reduces the risk of an unexpected, dangerous deployment during service. In practice technicians also wait a short period after disconnecting because some capacitors in the system can hold a charge, and following the manufacturer’s recommended wait time helps ensure the system is fully safe before you begin work. This is why the battery should be disconnected before airbag work: to prevent accidental deployment and keep people safe.

The main idea is that airbags are powered by the vehicle’s airbag system and can deploy if that power is present or if a fault is triggered while you’re working near the system. Disconnecting the battery removes the energy source from the airbag control module and inflators, which greatly reduces the risk of an unexpected, dangerous deployment during service. In practice technicians also wait a short period after disconnecting because some capacitors in the system can hold a charge, and following the manufacturer’s recommended wait time helps ensure the system is fully safe before you begin work. This is why the battery should be disconnected before airbag work: to prevent accidental deployment and keep people safe.