How to Determine if the Clock Spring is Faulty?
2 Answers
Methods to determine if the clock spring is faulty: 1. The horn does not sound; 2. The airbag warning light is on; 3. The buttons on the steering wheel cannot control the radio volume adjustment or station switching. Precautions for using airbags are: 1. Airbags must be used in conjunction with seat belts; 2. Maintain an appropriate distance from the airbag while seated; 3. Do not place items in front of, above, or near the airbag; 4. Maintain good driving habits to ensure a certain distance between the chest and the steering wheel. The working principle of airbags involves the pressure sensor in the airbag system and the acceleration sensor in the restraint system ECU to determine whether to deploy. When both receive signals simultaneously, the airbag is instantly inflated, rapidly expanding, breaking through the steering wheel's decorative panel, and deploying toward the driver, wrapping the upper body of the driver to reduce the direct impact force between the body and the vehicle.
I remember one time while driving, the airbag warning light on the steering wheel suddenly came on. At first, I thought it was a minor issue, but then when I turned, the horn wouldn't work, and there was a squeaking friction sound coming from inside the steering wheel, which really startled me. Later, I found out this was likely due to a problem with the clock spring (spiral cable), as it connects the wiring harness for the airbag. Once it breaks or wears out, it affects signal transmission. To diagnose it, first check if there's a warning light constantly illuminated on the dashboard—if the airbag light is on, it's probably the clock spring. Then test the steering wheel functions, like the horn or audio buttons; if they don't respond when pressed, it's almost certain. If the car makes creaking sounds or feels stiff when turning the steering wheel, it further indicates internal wear on the clock spring. It's best to get it checked at a 4S shop immediately to avoid airbag failure in case of an accident, which could be very dangerous. Always pay attention to these small warning signs while driving—don't wait until a major problem arises to regret it.
