A spiral cable, also called a clock spring, is an essential component in the steering system of a vehicle, such as the Toyota Probox. It is a flat, coiled cable housed inside the steering wheel assembly that maintains electrical connections between the steering wheel and the vehicle’s electrical systems while allowing the wheel to rotate freely.
Key Features
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Maintains Electrical Connection – Connects the steering wheel controls (horn, airbag, audio controls, etc.) to the car’s main wiring harness.
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Durable and Flexible – Designed to withstand continuous rotation of the steering wheel.
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OEM Fitment – Made to fit Toyota Probox models precisely, ensuring safety and proper function.
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Safety Function – Critical for airbag deployment and horn operation.
Functions
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Airbag Circuit Connection – Ensures the driver’s airbag receives power for deployment during a collision.
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Horn Operation – Maintains the horn circuit connection through steering wheel rotation.
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Steering Wheel Controls – Transfers signals for audio, cruise control, or other steering-mounted buttons.
Common Issues
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Horn not working
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Airbag warning light ON
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Steering wheel buttons malfunctioning
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Clicking or rubbing noise when turning the steering wheel
Advantages
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Ensures safe operation of airbags and steering-wheel functions
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Prevents damage to wiring caused by repeated rotation
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OEM or high-quality aftermarket options available for reliability
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Easy to replace when worn or damaged
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