1999 Ford Expedition Brake Lights Not Working [Try This Proven Fixes]

Your 1999 Ford Expedition’s brake lights are an essential safety feature. They warn drivers behind you that you are slowing down or stopping, and they can help prevent accidents. If your brake lights are not working, it can be a major inconvenience and a safety hazard.

In this guide, we will walk you through the steps to troubleshoot the problem and get your brake lights working again. We’ll cover common causes of brake light failure, how to test your brake light switch and bulbs, and how to replace a faulty brake light switch or bulb.

We understand that this issue can be frustrating, so we’ll do our best to make the troubleshooting process as easy and straightforward as possible. By the end of this guide, you’ll be able to get your brake lights working again so you can safely get back on the road.

Why 1999 Ford Expedition Brake Lights Not Working

Brake light fuse

The brake light fuse is a small, cylindrical piece of metal that is located in the fuse box. If the fuse is blown, it will need to be replaced.

Brake light switch

The brake light switch is a switch that is located under the brake pedal. When the brake pedal is pressed, the switch closes and sends a signal to the brake lights to turn on. If the switch is faulty, it will need to be replaced.

Brake light wiring

The brake light wiring is the set of wires that connect the brake light switch to the brake lights. If the wiring is damaged, it will need to be repaired or replaced.

Brake light bulbs

The brake light bulbs are the small, round bulbs that are located in the rear of the vehicle. If the bulbs are burned out, they will need to be replaced.

How to Troubleshoot: 1999 Ford Expedition Brake Lights Not Working

Your 1999 Ford Expedition’s brake lights are an important safety feature. They help other drivers see that you are slowing down or stopping, and they can prevent accidents. If your brake lights are not working, it is important to get them fixed as soon as possible.

There are a few things that could cause your brake lights to stop working. In this article, we will walk you through the steps to troubleshoot the problem and find the cause.

Step 1: Check the fuses

The first thing you should do is check the fuses for the brake lights. The fuses are located in the fuse box under the hood of your Expedition.

To check the fuses, you will need a fuse puller. A fuse puller is a small tool that is used to remove fuses from their sockets.

Once you have the fuse puller, open the fuse box and locate the fuses for the brake lights. The fuses for the brake lights are usually labeled Brake Lights or Stop Lights.

Remove the fuses from their sockets and inspect them for damage. If the fuses are blown, they will be blackened or melted. If the fuses are blown, you will need to replace them with new fuses.

Step 2: Check the wiring

If the fuses are not blown, the next thing you should check is the wiring. The wiring for the brake lights runs from the brake pedal switch to the brake lights.

To check the wiring, you will need a voltmeter. A voltmeter is a tool that is used to measure the voltage in an electrical circuit.

Start by tracing the wiring from the brake pedal switch to the brake lights. Disconnect the connectors at each end of the wiring harness.

Use the voltmeter to check the voltage at each connector. The voltage should be between 12 and 14 volts. If the voltage is not present, there is a problem with the wiring.

Step 3: Check the brake pedal switch

If the wiring is good, the next thing you should check is the brake pedal switch. The brake pedal switch is a switch that is located under the brake pedal.

To check the brake pedal switch, you will need to remove the brake pedal assembly. Once the brake pedal assembly is removed, you will be able to access the brake pedal switch.

Inspect the brake pedal switch for damage. If the brake pedal switch is damaged, it will need to be replaced.

Step 4: Check the brake lights

If the brake pedal switch is good, the next thing you should check is the brake lights themselves. The brake lights are located on the back of the vehicle.

To check the brake lights, you will need to turn on the headlights and apply the brakes. The brake lights should come on when you apply the brakes. If the brake lights do not come on, there is a problem with the brake lights.

Conclusion

These are the steps to troubleshoot a problem with your 1999 Ford Expedition’s brake lights. If you are unable to fix the problem yourself, you can take your Expedition to a qualified mechanic.

Also Read: 1999 Ford Expedition Driver Window Won’T Work

FAQs: 1999 Ford Expedition Brake Lights Not Working

Why are my 1999 Ford Expedition brake lights not working?

There are a few possible reasons why your 1999 Ford Expedition brake lights may not be working. Here are some of the most common causes:

Burned-out bulbs: The most common cause of brake light failure is a burned-out bulb. To check if this is the case, simply look at your brake lights and see if any of them are out. If so, you can replace the bulbs yourself or take your vehicle to a mechanic.

Faulty wiring: Another common cause of brake light failure is a faulty wiring connection. To check if this is the case, you will need to inspect the wiring harness for any damage or corrosion. If you find any damage, you will need to have the wiring repaired or replaced.

Bad brake switch: The brake switch is a small switch that tells the car’s computer when the brakes are applied. If the brake switch is bad, it will not send the signal to the computer, and the brake lights will not come on. To check if this is the case, you will need to have the brake switch tested.

Faulty brake controller: The brake controller is a computer that controls the operation of the brake lights. If the brake controller is bad, it will not send the signal to the brake lights, and they will not come on. To check if this is the case, you will need to have the brake controller tested.

How do I fix my 1999 Ford Expedition brake lights?

To fix your 1999 Ford Expedition brake lights, you will need to identify the cause of the problem and then take the appropriate steps to fix it. Here are the steps involved in fixing each of the possible causes of brake light failure:

Burned-out bulbs: To replace a burned-out bulb, you will need to:
Open the hood of your vehicle.
Locate the brake light housing.
Remove the old bulb by turning it counterclockwise.
Insert the new bulb by turning it clockwise.
Close the hood of your vehicle.

Faulty wiring: To repair a faulty wiring connection, you will need to:
Disconnect the battery.
Inspect the wiring harness for any damage or corrosion.
Repair or replace any damaged or corroded wiring.
Reconnect the battery.

Bad brake switch: To replace a bad brake switch, you will need to:
Disconnect the battery.
Remove the old brake switch.
Install the new brake switch.
Reconnect the battery.

Faulty brake controller: To replace a faulty brake controller, you will need to:
Disconnect the battery.
Remove the old brake controller.
Install the new brake controller.
Reconnect the battery.

What are the safety risks of driving with brake lights that are not working?

Driving with brake lights that are not working is a serious safety hazard. When you apply the brakes, the brake lights should come on to warn other drivers that you are slowing down or stopping. If your brake lights are not working, other drivers may not be aware that you are braking, which could lead to a collision.

How can I prevent my 1999 Ford Expedition brake lights from failing?

There are a few things you can do to prevent your 1999 Ford Expedition brake lights from failing:

Inspect the brake lights regularly: Make sure to inspect the brake lights every time you do your monthly car maintenance. If you see any burned-out bulbs, replace them immediately.

Keep the brake lights clean: Dirt and debris can build up on the brake lights and block the light from shining through. To prevent this, make sure to clean the brake lights regularly with a damp cloth.

Avoid driving through puddles: Driving through puddles can splash water onto the brake lights and damage the bulbs. To avoid this, try to avoid driving through puddles whenever possible.

Have the brake lights checked regularly: If you notice that your brake lights are not working properly, have them checked by a qualified mechanic as soon as possible.

What are the legal requirements for brake lights in my state?

The legal requirements for brake lights vary from state to state. To find out the legal requirements for brake lights in your state, you can contact your local DMV or do a search