The clock spring in your steering wheel is a part that most people would never think about until it malfunctions. It is normally hidden within your steering wheel mechanism, just underneath the spot where the horn and the airbag are located. A typical clock spring is shown above. Other names for the clock spring can include cable reel assembly, coil assembly, clock spring coil, spiral cable, and coil spring unit.

The purpose of the clock spring in your steering wheel is to provide a consistent electrical connection for all of the functions that are now built into the steering wheels of most vehicles, so that they all work while the steering wheel is turning.

While vehicles without airbags of the past decades used the clock spring solely as a connection for the horn, today's clock springs are also responsible for the airbag, the media controls, the cruise control, and any other functions that you might find on the wheel. Speaking of, some of the coolest steering wheels had no airbags or other controls on them.

What Happens If the Clock Spring Goes Bad?

There are many bad things that can happen if the clock spring in your steering wheel goes bad. The most serious of these would be the failure of the airbags to protect you in the event of a serious impact. The good news is that your airbag warning light is likely to warn you that the electrical connection to your airbag has failed.

If your airbag light does come on, contact your mechanic and have this malfunction repaired as soon as possible. If your airbag deploys and you need to replace it, check if your insurance will cover it. Another serious problem that could stem from a bad clock spring is the loss of your horn. While this may not seem like a big deal, there could be serious consequences if you need to warn a pedestrian or another driver in an emergency situation and the horn doesn't work.

Other issues that may be the result of a bad clock spring are the loss of other vehicle functions located on your steering wheel, such as your infotainment system adjustments, onboard phone controls, and cruise control.

While these functions may not be essential to the safe operation of your vehicle, they do reduce driving distractions and let you concentrate on the demands of the road in front of you. Again, these problems should be promptly fixed by a mechanic.

FAQ’s

1. What exactly is a clock spring?

A clock spring also known as a cable reel assembly, spiral cable, or coil spring unit is a flat spiral of electrical wiring hidden within the steering wheel. It ensures continuous electrical connections (for the horn, airbag, media buttons, cruise control, etc.) even when the wheel is turned.

2. What happens when the clock spring fails?

A faulty clock spring can lead to:

• Airbag warning light illuminating
• Loss of airbag deployment, posing major safety risks
• Non-working horn
• Steering-wheel media/cruise control buttons becoming unresponsive
• Intermittent functionality, warning lights, or even noise when turning the wheel, or blown fuses

3. Is it safe to drive with a bad clock spring?

No. While horn or button loss may seem minor, compromised airbag connectivity is dangerously serious. If the airbag light is on or components aren’t working properly, the vehicle should be taken to a mechanic immediately.

4. How can I tell if the clock spring is bad?

Look out for these signs:

• Dashboard airbag light turns on
• Horn fails to work
• Unresponsive steering wheel buttons
• Squeaking or grinding noise when turning the wheel
• Repeatedly blown fuses linked to steering components

5. What causes clock spring failure?

Common causes include:

• Wear and tear over time
• Improper installation especially if not centered correctly
• Damage from airbag deployment in previous accidents

6. Can I temporarily drive with one that’s faulty?

While the vehicle may still move, driving with a faulty clock spring is unsafe due to the risk of airbag non-deployment. It’s strongly recommended to repair or replace it immediately.