2023 Mercedes-Benz Sprinter Fuse Box Diagram & Amperage

Quick Answer

The 2023 Mercedes-Benz Sprinter has three primary fuse box locations:

1. Engine Compartment Fuse Box: Located on the driver's side of the engine bay, near the battery.
2. Driver's Side Kick Panel Fuse Box: Found inside the cabin, on the left side of the driver's footwell, behind a removable panel.
3. Driver's Seat Base Fuse Box: Housed within the base of the driver's seat, accessible by a cover on the front or side of the seat pedestal.

Important Note: Fuse numbers and protected circuits can vary based on your Sprinter's specific trim level and optional equipment. Always consult the printed fuse legend on the inside of the fuse box cover to verify the correct information for your vehicle.

Engine Compartment Fuse Box

This main fuse and relay box, often called the Prefuse Box, is located under the hood on the driver's side. It handles high-amperage circuits essential for engine operation and safety systems.

Driver's Side Kick Panel Fuse Box

This interior fuse panel is located in the driver's footwell to the left of the pedals, behind a plastic cover. It primarily protects circuits related to the cabin, dashboard, and driver controls.

Driver's Seat Base Fuse Box

This fuse block is for body and auxiliary systems. You'll find it by removing the access panel on the driver's seat pedestal. It often contains fuses for upfitter equipment, trailer connections, and other optional features.

How to Test a Fuse

A blown fuse can cause a complete failure of an electrical component. Here’s how to quickly check if a fuse is the problem:

1. Turn the vehicle's ignition off.
2. Locate and remove the fuse box cover.
3. Identify the suspect fuse using the diagram on the cover.
4. Remove the fuse. Most Sprinter fuse boxes have a small plastic fuse puller tool clipped inside. If not, needle-nose pliers will work carefully.
5. Visually Inspect the Fuse. Hold the fuse up to the light. Inside the plastic body is a small metal strip. If this strip is broken or looks melted, the fuse is blown.
6. Confirm with a Multimeter (Optional but Recommended). Set a multimeter to the continuity setting (it often looks like a sound wave symbol). Touch a probe to each metal blade on the top of the fuse. If the multimeter beeps or reads close to zero ohms, the fuse is good. If it remains silent or reads 'OL' (open loop), the fuse is blown.
7. Replace the fuse. If blown, replace it with a new fuse of the exact same amperage rating. Using a higher-rated fuse can cause a fire.

Common Blown Fuses on the 2023 Sprinter

• Cigar Lighter / 12V Power Outlet Fuse (#22 in Kick Panel): This is one of the most common fuses to blow. The cause is often a faulty phone charger, a loose plug, or a metal object falling into the socket. Before replacing the fuse, inspect the outlet for foreign objects and check the accessory you plugged in.

• Trailer Light Fuses (#1-4 in Seat Base): If your trailer lights aren't working but the van's lights are, these fuses are the first place to look. The problem is almost always caused by faulty wiring on the trailer itself. Check the trailer's plug and wiring for corrosion, shorts, or damage before you replace the fuses and reconnect it.

• Radio/Infotainment Fuse (#19 in Kick Panel): If your MBUX screen is completely black and won't turn on, this fuse is a good first check before suspecting a more complex software or hardware issue. Sometimes, a simple power cycle by removing and reinstalling the fuse can resolve minor glitches.

Always remember to check the fuse diagram printed inside your fuse box covers, as configurations can change based on the van's factory options.

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