A properly functioning high mounted brake light, often referred to as a CHMSL (Center High Mounted Stop Lamp), is crucial for safe driving. This light, typically located on the rear roof of a vehicle, provides an additional visual cue to drivers behind you when you apply the brakes.

Why is Checking Your CHMSL Important?

The CHMSL significantly enhances your vehicle’s visibility, especially in low-light conditions or when driving in traffic. It acts as a clear signal to following vehicles, increasing the reaction time of other drivers and reducing the risk of rear-end collisions.

Signs Your CHMSL Might Need Attention

• The light is not illuminating when you apply the brakes.
• The light is flickering or dim.
• You notice a burnt-out bulb.

Regularly checking your CHMSL is a simple yet essential part of vehicle maintenance that can contribute to your safety and the safety of others on the road.

Check High Mounted Brake Light

The high mounted brake light, often referred to as a CHMSL, is a crucial safety feature on modern vehicles. Positioned high on the rear of the car, it provides increased visibility to drivers behind, enhancing brake light effectiveness and reducing the risk of rear-end collisions. Regularly checking your CHMSL is essential for maintaining your vehicle’s safety and ensuring the well-being of yourself and others on the road.

Understanding the High Mounted Brake Light (CHMSL)

The CHMSL serves as an additional brake light, supplementing the standard brake lights on the rear bumper. Its elevated position makes it more visible to drivers, especially those in larger vehicles or those following closely. This increased visibility is particularly important in situations where visibility is reduced, such as during inclement weather or at night.

Why is Checking Your CHMSL Important?

A functioning CHMSL is vital for several reasons:

• Enhanced Visibility: The CHMSL’s high placement significantly improves the visibility of your braking intentions to drivers behind you.
• Reduced Rear-End Collisions: By providing an extra warning signal, the CHMSL helps prevent rear-end accidents, which are a leading cause of traffic collisions.
• Legal Requirement: In many jurisdictions, a functioning CHMSL is a legal requirement for vehicles. Driving without a working CHMSL can result in fines or even the failure of a vehicle inspection.

Signs Your CHMSL Might Need Attention

Be vigilant for the following signs that your CHMSL may be malfunctioning:

• Dim or Flickering Light: If the CHMSL appears dimmer than usual or flickers intermittently, it could indicate a problem with the bulb, wiring, or electrical connection.
• Complete Absence of Light: If the CHMSL is completely dark when you apply the brakes, the bulb has likely burned out or there is a more serious electrical issue.
• Unusual Noises: Any buzzing, clicking, or other unusual noises coming from the CHMSL area could signal a problem with the electrical system.

Checking Your CHMSL: A Step-by-Step Guide

Regularly inspecting your CHMSL is a simple yet crucial maintenance task. Here’s a step-by-step guide to ensure your CHMSL is functioning correctly: (See Also: Flashing Brake Lights Meaning)

1. Gather Your Supplies

• A helper (optional but recommended)
• A flashlight
• A new CHMSL bulb (if necessary)

2. Locate Your CHMSL

The CHMSL is typically mounted on the top center of the rear window or on the rear hatch. Consult your vehicle’s owner’s manual if you are unsure of its exact location.

3. Inspect the Bulb

With your helper applying the brakes, carefully inspect the CHMSL bulb for any signs of damage, discoloration, or breakage. If the bulb appears burned out, it will need to be replaced.

4. Check the Wiring and Connections

If the bulb appears intact, gently examine the wiring and connections leading to the CHMSL. Look for any loose wires, corrosion, or signs of damage.

5. Test the CHMSL

Once you have inspected the bulb and wiring, have your helper apply the brakes while you observe the CHMSL. Ensure the light illuminates brightly and consistently.

Replacing a CHMSL Bulb

If you determine that the CHMSL bulb needs replacement, follow these steps:

1. Disconnect the Battery

For safety, disconnect the negative terminal of your vehicle’s battery before working on any electrical components.

2. Access the Bulb

Locate the bulb housing for the CHMSL. It may be accessed from inside the vehicle or from the exterior. Consult your vehicle’s owner’s manual for specific instructions. (See Also: What Is The Parking Brake)

3. Remove the Old Bulb

Carefully remove the old bulb from its socket. Be gentle to avoid damaging the socket.

4. Install the New Bulb

Insert the new bulb into the socket, ensuring it is securely seated.

5. Reconnect the Battery

Reconnect the negative terminal of your vehicle’s battery.

6. Test the CHMSL

Have your helper apply the brakes to ensure the new bulb is functioning correctly.

Maintaining Your CHMSL

Regular maintenance can help ensure your CHMSL remains in optimal condition:

• Visual Inspection: Periodically inspect the CHMSL for any signs of damage, dirt, or debris.
• Bulb Replacement: Replace the CHMSL bulb as needed, typically when it appears dim or flickers.
• Professional Inspection: Consider having a professional mechanic inspect your CHMSL during regular vehicle maintenance checks.

Key Points to Remember

• A functioning CHMSL is essential for safety and legal compliance.
• Regularly inspect your CHMSL for any signs of malfunction.
• Replacing a burned-out bulb is a relatively simple task.
• Professional inspection and maintenance can help prevent more serious issues.

By following these guidelines, you can ensure your high mounted brake light is always working properly, contributing to your safety and the safety of others on the road.

Check High Mounted Brake Light FAQs

What is a high mounted brake light?

A high mounted brake light (also known as a third brake light) is an additional brake light mounted on the rear roof or top of a vehicle. It’s designed to be more visible to drivers behind, especially in traffic or adverse weather conditions. (See Also: What Are Brake Rotors Made Out Of)

Why is my high mounted brake light not working?

There are several reasons why your high mounted brake light might not be working. Common causes include a blown fuse, a faulty brake light bulb, a wiring issue, or a problem with the brake light switch.

How do I check my high mounted brake light?

You can easily check your high mounted brake light by having someone press the brake pedal while you stand outside the vehicle and observe if the light illuminates. Alternatively, you can use a multimeter to test the voltage at the bulb socket when the brake pedal is pressed.

How do I replace a high mounted brake light bulb?

The process for replacing a high mounted brake light bulb varies depending on the make and model of your vehicle. Generally, you’ll need to access the bulb housing, disconnect the electrical connector, remove the old bulb, and install the new bulb securely. Consult your vehicle’s owner’s manual for specific instructions.

Is it safe to drive with a non-functional high mounted brake light?

It is not recommended to drive with a non-functional high mounted brake light. This light is crucial for enhancing visibility and safety, especially during braking. A faulty brake light can increase the risk of rear-end collisions.