What must be done before servicing a clock spring in a steering column?

What must be done before servicing a clock spring in a steering column?

• A. Remove horn mechanism
• B. Disable all airbag modules
• C. Disconnect the battery cables
• D. Position steering wheel straight ahead

Answer: (D)

The clock spring carries electrical connections to the airbag, horn, and steering-wheel controls as the wheel turns, so it must be worked on without stressing or twisting its windings. Placing the steering wheel straight ahead puts the clock spring at its neutral, least-stressed position, preventing over-winding or damage while you perform the service. If the wheel isn’t centered, turning or moving the column during maintenance can force the spring beyond its designed range, risking damage or misalignment that could affect airbag deployment later. While other safety steps (like disconnecting the battery or removing components) are important in some procedures, the specific prerequisite here is to have the wheel straight ahead to ensure a safe, non-stressed service.

The clock spring carries electrical connections to the airbag, horn, and steering-wheel controls as the wheel turns, so it must be worked on without stressing or twisting its windings. Placing the steering wheel straight ahead puts the clock spring at its neutral, least-stressed position, preventing over-winding or damage while you perform the service. If the wheel isn’t centered, turning or moving the column during maintenance can force the spring beyond its designed range, risking damage or misalignment that could affect airbag deployment later. While other safety steps (like disconnecting the battery or removing components) are important in some procedures, the specific prerequisite here is to have the wheel straight ahead to ensure a safe, non-stressed service.