At a Glance
- Use masking tape or chalk to mark a vertical line on a wall or garage door at a distance equal to the measurement you took.
- While it is possible to align headlights DIY, it is generally recommended to have it done professionally for the following reasons.
- It is recommended to check headlight alignment at least once a year or after any significant impact or suspension work.
Yes, misaligned headlights are a common reason for MOT failure. During an MOT test, the examiner will check that your headlights are correctly aligned to ensure they provide adequate visibility for both you and other road users.
Importance of Headlight Alignment
Proper headlight alignment is crucial for several reasons:
- Improved Visibility: Aligned headlights project light in the intended direction, maximizing visibility during nighttime driving.
- Reduced Glare: Misaligned headlights can blind oncoming drivers, creating a safety hazard.
- Legal Compliance: Headlight alignment is a legal requirement in many countries, including the UK.
- MOT Compliance: As mentioned earlier, misaligned headlights can lead to MOT failure.
Common Causes of Headlight Misalignment
Headlight misalignment can occur due to various factors, including:
- Impact: Accidents or bumps can knock headlights out of alignment.
- Suspension Issues: Worn or damaged suspension components can cause headlights to shift.
- Bulb Replacement: Incorrectly installed bulbs can alter the headlight beam’s position.
- Natural Settling: Over time, headlights may naturally settle and become misaligned.
Signs of Misaligned Headlights
Here are some telltale signs that your headlights may be misaligned:
- Uneven Beam Pattern: The light beam from misaligned headlights may appear uneven or distorted.
- Excessive Glare: You may notice excessive glare from oncoming vehicles when driving at night.
- Limited Visibility: Headlights that are pointed too low may not provide adequate illumination.
How to Check Headlight Alignment
Checking headlight alignment is relatively straightforward. You can do it yourself by following these steps:
1. Find a Flat Surface: Park your vehicle on a level surface and ensure the headlights are clean.
2. Measure the Distance: Measure the distance from the ground to the center of each headlight.
3. Mark a Line: Use masking tape or chalk to mark a vertical line on a wall or garage door at a distance equal to the measurement you took.
4. Position the Vehicle: Reverse your vehicle until the front bumper is approximately 10 feet from the wall.
5. Turn on the Headlights: Turn on your headlights and adjust the aim until the brightest part of the beam hits the marked line.
Getting Headlights Aligned Professionally
If you are unable to align your headlights yourself, it is recommended to seek professional assistance. A mechanic will have the necessary tools and expertise to ensure accurate alignment.
DIY vs. Professional Alignment
While it is possible to align headlights DIY, it is generally recommended to have it done professionally for the following reasons:
- Precision: Professionals use specialized equipment to ensure precise alignment.
- Safety: Misaligned headlights can pose a safety hazard.
- Convenience: Professional alignment is quick and hassle-free.
Costs of Headlight Alignment
The cost of headlight alignment can vary depending on the type of vehicle and the location of the service. On average, you can expect to pay between £20-£50 for professional alignment.
Final Note: Ensuring MOT Success
Proper headlight alignment is essential for both road safety and MOT compliance. By regularly checking and adjusting your headlights, you can avoid MOT failure and ensure optimal visibility while driving.
Frequently Discussed Topics
Q: How often should I check headlight alignment?
A: It is recommended to check headlight alignment at least once a year or after any significant impact or suspension work.
Q: Can I adjust headlight alignment myself?
A: Yes, it is possible to DIY headlight alignment, but it is generally recommended to have it done professionally for precision and safety.
Q: How long does headlight alignment take?
A: Professional headlight alignment typically takes around 30 minutes to an hour.
Q: What are the consequences of driving with misaligned headlights?
A: Misaligned headlights can reduce visibility, cause glare for oncoming drivers, and lead to MOT failure.
Q: Can misaligned headlights cause damage to the vehicle?
A: While misaligned headlights are unlikely to cause damage to the vehicle itself, they can increase the risk of accidents due to reduced visibility.
