Q: I found this under the driver's side underneath my expedition but don't know what it is or where it goes

asked by on

I would have to send a picture its hard to explain

My car has 136000 miles.
My car has an automatic transmission.

Hello. If you have found a loose harness, connector then it may be possible that they go to a component or feature that is not currently installed on the vehicle. You may be able to tell if this is the case by examining the connector or wires. If they appear to be dusty as a result of being unmoved, untouched, then it may be possible that they are simply an extra connector. There are also several relays and modules installed underneath the dash. These look like boxes with harnesses going to them, and can come in different colors and sizes. They will either control the function or power of different features or components of the vehicle. You may be able to identify the specific component by inspecting it for a part number and looking it up.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. I found this under the driver's side underneath my expedition but don't know what it is or where it goes

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

Get a quote

What others are asking

Q: Engine internal upgrades

Hi there. I don't believe there is anything you can install on an OEM motor that will help it last longer. To be honest, I've never seen a timing chain problem on a Ford 5.4 Liter motor unless there was...

Q: Q: Idles and stalls again.

It sounds like you may have a dirty or failing idle air control valve. The idle air control valve reads the air intake as it is mixed with fuel prior to being injected into the engine at low speeds and...

Q: Running hot with water leaking

Hello, thanks for writing in about your Ford Expedition. From what you've described you may have dual heat on your vehicle and the rear heater core or one of the lines is leaking. It's also possible that your control valve...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.