Freightliner Clearance Lights Not Working: 3 Fixes

freightliner clearance lights not working
freightliner clearance lights not working

The clearance lights are very important especially for bigger vehicles like a Freightliner truck. These lights make it easier for other drivers to get an idea of the width of the truck. That way you can avoid many accidents as other riders can see the dimensions of your truck with the help of these clearance lights.

However, you will often notice customers complaining about their clearance lights not working. This is why we will be going over some possible solutions that can help you with fixing the clearance lights on your Freightliner.

Freightliner Clearance Lights Not Working

  1. Check Damaged Wires

If the other lights are working perfectly on your truck and you are only having issues with the clearance lights then you need to check for damaged wires.

You will need to inspect the wiring thoroughly to find the damaged wires. From there you just have to insulate or replace the wire and that should fix the clearance lights for you.

There are several problems created by the damaged wires and you can’t get your clearance lights to work without fixing the wiring.

So, before changing the relay or applying any other troubleshooting method, you need to take a look at your wiring to make sure everything is in place. Seek help from an experienced friend if you are not sure about what you need to look for.

  1. Check Switch

Depending upon the model of your truck you might have an independent terminal for the clearance lights. So, if you have to use a separate switch to turn on these clearance lights then there is probable that the problem is with the switch itself and not the lights.

After taking a look at these wires you need to check the switch to see if it is working properly.

You will need to replace the switch if it is not working properly. You can order a compatible switch online or go to a hardware store for a replacement.

It should not be that difficult to install the replacement switch yourself and you can save the workshop fees that way. But if you are clueless about what you need to do, then it would be better to go to a workshop.

  1. Check for Corrosion 

If there was no issue with the switch then you will need to check for corrosion on the connection points and the relay socket. Sometimes, cleaning the corroded part is enough to fix the problem but if the clearance lights are not working even after cleaning the contact points, then you can try swapping the relay.

In some cases, this problem can also be caused by a blown fuse. You can use a 12 volts tester light to check the fuse box. This will help you isolate the problem and hopefully, you won’t have to go to a workshop to fix the clearance lights on your Freightliner.

Most of the users traced back this problem to damaged or chaffed wires. So, make sure to check the wiring first before moving to other troubleshooting methods.

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