Removing a W123 Fuse Box Cover | Electrical Problem

May 7, 2022


Welcome to Grafco Electric, your trusted source for all things electrical. In this guide, we will walk you through the process of removing a W123 fuse box cover. Whether you're experiencing electrical issues or simply need to perform maintenance, knowing how to safely remove the fuse box cover is essential.

Why Remove a W123 Fuse Box Cover?

The W123 fuse box cover houses the electrical fuses and relays for various components in your vehicle. Sometimes, electrical problems may arise, and troubleshooting requires accessing the fuse box. Removing the fuse box cover allows you to inspect, test, and replace fuses or electrical components as needed.

Step-by-Step Guide: Removing a W123 Fuse Box Cover

Step 1: Gather the Necessary Tools

Before you begin, make sure you have the following tools ready:

  • Flathead screwdriver
  • Torch or flashlight
  • Plastic pry tool

Step 2: Locate the W123 Fuse Box

The W123 fuse box is typically located in the engine compartment or beneath the dashboard on the driver's side. Consult your vehicle manual or do some online research to find the exact location.

Step 3: Power Off Your Vehicle

Before working on any electrical components, always turn off your vehicle's engine and remove the key from the ignition. This ensures your safety and prevents any accidental electrical discharge.

Step 4: Disconnect the Negative Battery Terminal

This step is crucial to prevent any possible electrical shocks during the fuse box cover removal process. Locate the negative terminal on your car battery, use a wrench to loosen the nut, and disconnect the negative cable from the terminal.

Step 5: Identify the Fuse Box Cover Clips

Inspect the fuse box cover and look for the clips that secure it in place. These clips may be located on the sides or top of the cover. Use a torch or flashlight if visibility is limited.

Step 6: Remove the Clips

Once you have located the clips, gently insert the flathead screwdriver or plastic pry tool and carefully release them. Take your time to avoid damaging the fuse box cover or its surrounding components.

Step 7: Lift and Remove the Fuse Box Cover

With the clips released, carefully lift the fuse box cover by applying even pressure on each side. Take note of any wiring harnesses or connectors attached to the inside of the cover. If necessary, unplug them by gently pulling them free.

Step 8: Inspect, Test, and Replace

Now that you have successfully removed the W123 fuse box cover, you have direct access to the fuses and relays. Inspect each fuse visually for signs of damage or burning. Test fuses with a multimeter if needed. If any fuses are faulty, replace them with the appropriate rating and type.


Removing a W123 fuse box cover is a relatively straightforward process, but it should always be approached with caution and proper knowledge. By following our step-by-step guide, you can safely troubleshoot electrical problems in your vehicle and keep it running smoothly. If you're unsure or uncomfortable performing this task yourself, we recommend contacting a professional electrician for assistance. For all your electrical needs, trust Grafco Electric to provide expert advice and reliable solutions.

Gail Pawlak
This article was so helpful in guiding me through removing the W123 fuse box cover on my car. Thanks Grafco Electric!
Oct 6, 2023