Mot Fail Due to Number Plate Light: Common Causes and Solutions

The number plate light is an essential component of a vehicle that illuminates the number plate, making it visible in low light conditions. It is a legal requirement for all vehicles to have a working number plate light, and failure to comply can result in an MOT fail. In this article, we will explore the MOT fail number plate light and what you need to know to ensure your vehicle passes its MOT.

When it comes to the MOT test, the number plate light is one of the most common reasons for failure. A faulty or non-functioning number plate light can result in an instant fail, even if the rest of the vehicle is in good condition. This is because the number plate light is a crucial safety feature that allows other road users to identify your vehicle in low light conditions, such as at night or in bad weather.

If your vehicle fails its MOT due to a faulty number plate light, it is important to address the issue promptly. Not only is it a legal requirement to have a working number plate light, but it is also a safety concern. In the next section, we will discuss the common causes of number plate light failures and what you can do to prevent them.

Understanding MOT

When it comes to owning a vehicle, passing the MOT test is crucial. The MOT test is an annual inspection carried out by authorised garages to ensure that your vehicle meets the minimum safety standards set by the UK government.

During the MOT inspection, the tester will check a variety of components on your vehicle, including the number plate light. If the light is not working correctly, it will result in an MOT fail.

The number plate light is an essential component of your vehicle’s lighting system. It illuminates the rear number plate, making it visible to other road users in low light conditions. If the light is not working correctly, it can make it difficult for other road users to read your number plate, which can lead to safety issues.

To avoid an MOT fail due to a faulty number plate light, it’s essential to check it regularly. You can do this by turning on your vehicle’s lights and checking that the number plate light is working correctly. If it’s not, you can replace the bulb yourself or take it to a garage for repair.

In summary, passing the MOT test is essential for vehicle safety, and the number plate light is a crucial component in ensuring that your vehicle meets the minimum safety standards. Regularly checking and maintaining your number plate light can help you avoid an MOT fail and keep you and other road users safe on the road.

Legal Requirements for Number Plate Lights

We, as drivers, have a legal obligation to ensure that our number plate is clearly visible at all times. This not only applies during daylight hours but also during periods of darkness. To comply with this requirement, a number plate light must be fitted and in good working condition.

The legal requirements for number plate lights are set out in the Road Vehicles Lighting Regulations 1989. These regulations state that a number plate light must:

  • Illuminate the number plate so that it can be read from a distance of 20 metres
  • Emit a white light
  • Be positioned centrally or offside, approximately 350mm from the ground
  • Be protected from damage

It is worth noting that the regulations do not specify the type of bulb that should be used in a number plate light. However, we recommend using a bulb that complies with British Standard BS AU 148a. This will ensure that the light emitted is of the correct colour and intensity.

It is important to regularly check that your number plate light is in good working condition. If it is not working, it could result in an MOT failure. It is also worth noting that a defective number plate light could result in a fine and penalty points on your driving license.

In summary, to comply with legal requirements, a number plate light must illuminate the number plate so that it can be read from a distance of 20 metres, emit a white light, be positioned centrally or offside, approximately 350mm from the ground, and be protected from damage. Regularly checking that your number plate light is in good working condition is important to avoid an MOT failure and potential fines.

Common Reasons for Number Plate Light Failure

When it comes to the MOT test, one of the most common reasons for failure is a faulty number plate light. This may seem like a minor issue, but it is important to ensure that your number plate is clearly visible at all times, especially at night or in poor weather conditions. Here are some common reasons why number plate lights fail:

1. Bulb Failure

The most common reason for number plate light failure is a blown bulb. This can be caused by a number of factors, including age, vibration, and general wear and tear. It is important to check your number plate lights regularly and replace any blown bulbs as soon as possible.

2. Wiring Issues

Another common reason for number plate light failure is wiring issues. This can be caused by damaged or corroded wiring, loose connections, or a faulty switch. If you suspect that your number plate lights are not working due to wiring issues, it is important to have them checked by a qualified mechanic.

3. Faulty Fuse

A faulty fuse can also cause number plate light failure. This can be caused by a short circuit or other electrical issues. If you have checked your bulbs and wiring and still cannot find the issue, it is worth checking the fuse for your number plate lights.

In conclusion, number plate light failure is a common issue that can cause your vehicle to fail its MOT test. By regularly checking your number plate lights and addressing any issues as soon as possible, you can ensure that your vehicle remains roadworthy and safe to drive.

How to Check Your Number Plate Light

Checking your number plate light is a simple task that can help you avoid an MOT fail. Here’s how to do it:

  1. Turn on your headlights and walk around to the back of your vehicle.
  2. Look at the number plate and check that the light illuminates it evenly.
  3. If the light is dim or not working at all, you may need to replace the bulb or check the wiring.
  4. It’s also a good idea to check the condition of the number plate itself, as it must be legible and free from damage.

Remember, a faulty number plate light can result in an MOT fail, so it’s important to check it regularly. If you’re unsure about how to replace the bulb or check the wiring, consult your vehicle’s manual or take it to a qualified mechanic.

By following these simple steps, we can ensure that our number plate light is working properly and avoid any unnecessary MOT fails.

Fixing a Faulty Number Plate Light

If your car has failed its MOT due to a faulty number plate light, don’t worry – it’s a common issue that can be easily fixed. Here are some steps you can take to address the problem:

Replacing Bulbs

The first thing to check is whether the bulb needs replacing. To do this, remove the light cover and inspect the bulb. If it’s blown, you’ll need to replace it. Check your car’s manual to find out which type of bulb you need, and purchase a replacement from a reputable supplier.

To replace the bulb, simply remove the old one and insert the new one. Make sure it’s securely in place before replacing the light cover.

Electrical Issues

If the bulb is not the problem, it’s possible that there is an issue with the electrical system. Check the wiring and connections to make sure everything is properly connected and not damaged. If you’re not confident doing this yourself, take your car to a qualified mechanic who can diagnose and fix any electrical issues.

Cleaning and Maintenance

Sometimes, a faulty number plate light can be caused by dirt or debris on the cover or lens. Clean the cover and lens with a soft cloth and a mild cleaning solution to remove any dirt or grime. Regularly cleaning and maintaining your car’s lights can help prevent issues like this from occurring in the future.

In summary, a faulty number plate light is a common issue that can be easily fixed by replacing the bulb, checking for electrical issues, or cleaning and maintaining the cover and lens. If you’re unsure about how to fix the issue, don’t hesitate to seek the help of a qualified mechanic.

Pre-MOT Checklist

Before taking your vehicle for an MOT test, it is essential to carry out a few basic checks to ensure that your car passes the test. Here is a pre-MOT checklist to help you prepare your vehicle for the test.

Exterior Checks

Firstly, check your number plate light to ensure it is working correctly. A faulty number plate light is a common reason for MOT failure. Check that all the lights, including headlights, brake lights, and indicators, are working correctly. Ensure that the windscreen and all windows are free from cracks and chips.

Tyres and Brakes

Check the tyre tread depth and ensure that they are within the legal limit of 1.6mm. Check for any visible damage to the tyres, such as bulges, cuts, or tears. Ensure that the brakes are working correctly by testing the brake pedal’s firmness and checking for any unusual noises or vibrations.

Fluid Levels

Check the engine oil, brake fluid, power steering fluid, and coolant levels. Ensure that they are at the correct level and top up if necessary. Check for any visible leaks or signs of damage to the hoses.

Interior Checks

Check that the horn is working correctly and that the seatbelts are in good condition. Ensure that the wipers and washers are working correctly and that the mirrors are adjusted correctly.

By carrying out these basic checks before taking your vehicle for an MOT test, you can increase your chances of passing the test. It is essential to ensure that your vehicle is in good condition and roadworthy before taking it for an MOT test.

Consequences of MOT Failure

When it comes to the MOT test, failure to pass can have serious consequences. The number plate light is a crucial component that is often overlooked, but if it fails, it can result in an MOT failure.

If your number plate light fails, it may seem like a minor issue, but it can have significant consequences. Not only can it result in an MOT failure, but it can also lead to a fine and penalty points on your driving licence.

In addition to the legal consequences, driving with a faulty number plate light can also be dangerous. It can make it difficult for other drivers to read your number plate, which can cause confusion and potentially lead to accidents.

To avoid the consequences of an MOT failure due to a faulty number plate light, it is important to ensure that your vehicle is properly maintained. Regular checks and maintenance can help to identify any issues before they become a problem and ensure that your vehicle is safe and roadworthy.

Overall, it is important to take the MOT test seriously and ensure that your vehicle is properly maintained. Failure to do so can have serious consequences, both legal and safety-related.

After the MOT: Next Steps

Once you have received your MOT certificate, it is important to take the necessary steps to ensure that your vehicle remains roadworthy. Here are some next steps to consider:

Check Your Number Plate Light

If your number plate light failed during the MOT, it is important to get it fixed as soon as possible. Without a functioning number plate light, your vehicle may not be legal to drive at night, which could result in a fine or penalty points on your licence.

To fix the issue, you may need to replace the bulb or the entire light unit. Check your vehicle manual or speak to a mechanic to find out the specific requirements for your vehicle.

Address Any Other Failures

If your vehicle failed the MOT for any other reason, it is important to address these issues promptly. Failure to do so could result in your vehicle being deemed unroadworthy, which could lead to fines or penalty points on your licence.

Speak to a mechanic or garage to find out what repairs are required and how much they will cost. It is important to get multiple quotes to ensure that you are getting a fair price.

Schedule Your Next MOT

Once you have addressed any issues from your current MOT, it is important to schedule your next test. You can do this up to a month before your current certificate expires.

By scheduling your next MOT early, you can ensure that your vehicle remains roadworthy and avoid any fines or penalties for driving without a valid certificate.

Frequently Asked Questions

What constitutes a failure due to a number plate light during an MOT?

If the number plate light is not working, it will result in an MOT failure. Additionally, if the light is not illuminating the number plate sufficiently, the vehicle may also fail the MOT.

What are the legal requirements for number plate lights on vehicles in the UK?

According to UK traffic regulations, all vehicles must have a white light illuminating the rear number plate. The light must be positioned centrally or off to one side, and it must be visible from a distance of 20 meters.

How can a cracked number plate affect the outcome of an MOT?

A cracked number plate can affect the outcome of an MOT if it is deemed to be obscuring the registration number or if it is not securely attached to the vehicle. In such cases, the vehicle may fail the MOT.

What is the process for fixing an inoperative registration plate lamp?

If your vehicle fails the MOT due to an inoperative registration plate lamp, you will need to have it fixed before it can pass the retest. The process for fixing the lamp will depend on the cause of the fault, and it may involve replacing the bulb, the wiring, or the lamp unit itself.

Which vehicle lights are inspected during an MOT test?

During an MOT test, all lights on the vehicle are inspected, including the headlights, sidelights, indicators, brake lights, reverse lights, and fog lights. Additionally, the registration plate light is also inspected.

Are illuminated number plates permissible under UK traffic regulations?

No, illuminated number plates are not permissible under UK traffic regulations. The only requirement is for a white light to illuminate the rear number plate, and this must be positioned centrally or off to one side and visible from a distance of 20 meters.