How To Test Ford Multifunction Switch? [5 Easy Steps]

A multifunction switch of a Ford truck is very important. It has to control several things in your vehicle. As the duty is huge, it can be damaged fast. In that case, you may have to test the activity of the multifunction switch. 

There are a number of ways to test this switch of your truck. But among them, there is one way that is very fast and easy to do.

If you can follow that process, then you will be able to test the multifunction switch easily. In this process, you need no tool. We are going to show you the easiest way to test Ford multifunction switch. So, without any delay let’s start.

Why You Need to Test the Ford Multifunction Switch?

From lighting to control, the duty of a multifunction switch is huge. Some of its duties are very vital. If the multifunction switch does not work properly then there is a chance of getting an unexpected situation.

Controlling the movement of light is one of the main tasks of this switch. The lights are headlights, inside lights, and also the indicators. To better service from the lights of your truck, you have to test the multifunction switch well before going for a long drive.

There are some other tasks that a multifunction switch does. Another service this switch provides to the driver is an emergency brake. While the vehicle is in a serious situation, the driver uses this brake to stop the vehicle.

So, if you want to get premium service from the multifunction switch of your vehicle then you can test its working capacity regularly. If you want to test it simply then follow the following steps.

How To Test Ford Multifunction Switch? (Step by Step)

The multifunction switch mainly controls the lights of your vehicles. So, if you can test the lights while the switch is off and on, then you will find whether the switches are working or not. The testing is going to be easier for you after reading this article completely. Let’s follow all the steps.

Step 1: Disconnect the Battery Connections

To test whether the multifunction switch is working or not, you have to remove the battery connection of your vehicle.

If you work while the battery connection is on, there is a possibility of short circuiting. This will create an unexpected situation for you and also the vehicle may face some damages.

Step 2: Turn off the Interior Lights

When the battery connections are removed, you have to enter into the inside of your vehicle. Now you have to perform some small tricks.

First of all, you have to turn off all the lights that are inside your vehicle. That will create some darkness inside the vehicle.

If you can do this, the performance of the multifunction switch will be visible to you. You will be able to check any leakage of light from the headlight of your vehicle.

Step 3: Turn on the Headlights

In this step, you have to turn on the headlight. You do this task using the multifunction switch of your vehicle. You will find the lights are performing well. The movement of lights and also the side fading of lights also need to be checked after turning on the lights.

If you find the lights are ok according to your command then the switch is ok. But if the lights are not doing their natural duty then the problem is in the switch itself.

You may need to replace it as soon as possible. You also have to check the heat behind the lights. If the lights are becoming overheated then you have to change the switch.

Step 4: Check the MFS Window

After turning the internal lights off and headlights on, you have to check the multifunction window. The main thing you have to check here is any leakage of lights. If the switch is broken then you will find the lights are glowing slightly even after turning them off.

If that is true, then this is the symptom of a bad multifunction switch. You may need to change the switch. That was all about the testing process of the Ford Multifunction Switch. I hope this process is clear to you.

Warnings while Testing Ford Multifunction Switch

Some caution for you before you start testing the switch. You must be aware of these things before starting the process. Let’s see these warnings.

Keep the positive and negative ports of the battery away from each other. This will keep your battery and vehicles safe. Also keep in mind that while disconnecting the ports, you have to remove the negative port first.

There are a number of connections in a multifunction switch. All these connections are connected by ports and connectors. Try to remove the unusual connections from the switch before testing.


This is the process of testing a multifunction switch of the Ford truck. The process is very long and detailed but I make it short here.

But I hope you will be able to do it easily if you read the article from beginning to end. That was all for today. Thanks for reading.

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