Q: No tail light, instrument panel light, or tag light

asked by on October 10, 2016

I lost instrument panel lights, tag lights, and tail lights 3 weeks ago. I checked all fuses. I have replaced the headlight switch and stack switch. I have also tested the factory trailer hitch wiring and it showed no tail light power. I have never used the trailer hitch. What can I do next. I did not replace the bulbs but I didn't think the brake lights would work if the tail lights did not work.

My car has 175000 miles.
My car has an automatic transmission.

Electric Problems Inspection $79.99 - $89.99 Get a Quote

Hi there, thanks for writing in. Most ancillary electrical items (like tail lights, instrument panel lights and tag lights) are actually controlled through an electrical relay box. On your Ford Expedition, there is usually a main relay control box and a secondary relay box. If any part of the relay is damaged, it will cause items like you’ve described to all fail. The best way to determine exactly whether this is the case or source of your problem, is to contact one of our local mechanics to complete an electrical inspection. This should pinpoint the source of your issues so that the corrective action can be provided.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

What others are asking

How do you remove rear seat armrest cup holder?

You may not be able to remove the arm rest without removing the entire door panel first. Depending on vehicle, you may only have to remove a couple screws and the door panel will lift straight up and off. Some...

Runs rough below 3000 rpms

This may be a sign of a faulty MAP sensor as the vehicle responds adversely to a load put on the motor (i.e. putting it in gear, making turns (which makes use of the power steering pressure switch) turning on...

RPMs running high on car

Sounds like you might have a large vacuum leak. Think of your engine as a big vacuum cleaner. If the vacuum cleaner has a restriction then it slows down, if the port is completely open it goes as fast as...

Slight vibration between 50-60 miles per hour.

Hello, thank you for writing in. The suspension and tires are so closely related that an issue with your tie rods would feel like a tire problem. The technician is correct about this would cause a vibration. Did they do...

Sporadic chirp--dont think it's the belt

The chirping you are hearing may not be belt related. Your suspension can also make noises like this. If you hear the noises going over bumps that is a huge sign. The fact you have narrowed it down to one...

who can replace key via VIN# in order to replace old with new ignition cylinder and bypass drilling

I would check with Ford dealers (try a couple different ones) to see if they can work from the VIN number. If the dealers claim they can't you might ask for the regional customer service number and see if anything...

My transmission slips out of fear at high speed but not all the time.

This is a symptom of worn or damaged gears within the transmission. It can also be a mis-adjusted shifter linkage, not allowing the gear to fully engage. If your clutch is going bad, you will notice the engine accelerate faster...

Power steering isn’t working

Losing power steering can be a nuisance while maneuvering through a parking lot. It is a much scarier situation should it occur at higher speeds. On the 2010 Fusion, an electronic power steering system (EPAS) was installed to reduce engine...

I have a Ford Triton 5.4L Engine with a loud knocking noise,

The camshaft phaser can cause the noise you describe and also the drivablity issues. I would certainly fix it. There is a cam phaser lockout kit available and I would recommend using the kit instead of replacing the phaser. The...

Related articles

A Buyer’s Guide to the 2012 Ford Escape Hybrid
Over Over the past few years, we’ve seen a major trend toward people choosing crossover utility vehicles (CUVs) over larger SUVs. The big motivator here, of course, is buying a more eco-friendly vehicle that will also save you a bundle...
The Best Used Cars to Buy for Highway Driving
Do Do you spend hours each week on the highway for work? Maybe you just live in a very rural area and have to drive for 30 or 45 minutes to get to the grocery store. Whatever the case, your...
How Can the Light Bulb Wiring Become Damaged?
Your Your car is as much electrical as it is mechanical. Wiring harnesses snake their way around the engine bay, and throughout the cabin of the vehicle. Most of your accessories run on electricity, and even the engine needs a...