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What bulb is a brake light on a Ford Fiesta?


As a car owner, knowing the specifics of your vehicle's components can save you time and money. One crucial aspect of vehicle safety is ensuring that your brake lights are functioning correctly. In this article, we will explore what type of bulb is used for the brake lights on a Ford Fiesta, along with some tips on how to replace them.


What Bulb Does a Ford Fiesta Use for Brake Lights?


The brake lights on a Ford Fiesta typically use a 3157 bulb. This bulb is a dual-filament type, meaning it serves both the brake light and the tail light functions. It's essential to ensure that you have the correct bulb type when replacing it to maintain safety and compliance with road regulations.


Steps to Replace Your Ford Fiesta Brake Light Bulb


Replacing a brake light bulb is a straightforward process that you can do at home. Here are the steps to follow:



  • Gather Your Tools: You will need a new 3157 bulb, a screwdriver, and possibly a pair of gloves to avoid getting oils from your skin on the bulb.

  • Access the Brake Light Assembly: Open the trunk of your Ford Fiesta and locate the brake light assembly. You may need to remove a cover or panel to access the bulbs.

  • Remove the Old Bulb: Twist the bulb socket counterclockwise to remove it from the assembly. Carefully pull out the old bulb.

  • Install the New Bulb: Insert the new 3157 bulb into the socket, ensuring it is seated properly. Then, twist the socket back into the assembly clockwise.

  • Test the Brake Light: Before closing everything up, have someone press the brake pedal to ensure the new bulb is working correctly.

  • Reassemble: Replace any covers or panels you removed and close the trunk.


Tips for Maintaining Your Brake Lights


To ensure your brake lights remain in good working condition, consider the following tips:



  • Regular Checks: Make it a habit to check your brake lights regularly, especially before long trips.

  • Use Quality Bulbs: Always opt for high-quality bulbs to ensure longevity and reliability.

  • Keep the Lenses Clean: Dirty lenses can reduce the brightness of your brake lights, making them less visible to other drivers.


By understanding the type of bulb your Ford Fiesta uses and how to replace it, you can ensure your vehicle remains safe and roadworthy. If you have any questions or need assistance, feel free to reach out to your local auto service provider.


Frequently Asked Questions

Which bulb on the tail light is a brake light?


On many vehicles, the tail lights and brake lights share the same bulb. One filament inside the bulb is for the tail light and the other filament is for the brake light. There are also some vehicles that have a separate bulb for each circuit.



Is 3157 a brake light bulb?


3157 Bulb: Operates at 12-14 volts and is available in dual-filament versions, making it suitable for combined brake light and parking light functionality.



What is the brake system light on a Ford Fiesta?


Ford Anti-lock Brake System (ABS) warning light
If it comes on with the brake warning light, it could indicate that the brake system is failing and you should stop straight away and call for recovery.



What bulb do I need for brake lights?


Brake lights are available as LED or halogen, usually in P21/5W and P21W fittings. Please check your vehicle handbook or use our Bulb Finder to find out which fitting your car needs - different vehicles use different fittings.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.