A complete guide to the fuse box locations, diagrams, and amperage ratings for your 2023 Mercedes-Benz Metris, from the ASE-certified technicians at Repairius.com.

Quick Answer

On the 2023 Mercedes-Benz Metris, you'll find three primary fuse box locations:

Under the Hood: Located in the engine bay, on the driver's side, near the battery.
Driver's Side Dash: Found on the driver's side of the dashboard, accessible after opening the driver's door.
Under the Driver's Seat: This fuse and relay box is located beneath the driver's seat and requires moving the seat forward and lifting a cover to access.

Under-Hood Fuse Box

This fuse box, often called the pre-fuse box, is located in the engine compartment on the driver's side. It houses high-amperage fuses for major vehicle systems.

Fuse #	Amp	Color	Circuit / Component Protected
F1	200A	Blue	Alternator
F2	150A	Gray	Starter Motor
F3	80A	Green	Engine and Transmission Control Modules (ECM/PCM)
F4	60A	Yellow	Interior Fuse Box Feed
F5	40A	Orange	ABS and Stability Control Module
F6	30A	Pink	Fuel Pump
F7	25A	Natural	A/C Clutch and Blower Motor Relay

Relay Locations:

R1: Starter Relay
R2: Ignition Relay
R3: Fuel Pump Relay

Driver's Side Dash Fuse Box

This fuse box is for many of the interior and convenience-related circuits. You can access it by opening the driver's door and removing the panel on the side of the dashboard.

Fuse #	Amp	Color	Circuit / Component Protected
F20	15A	Blue	Low Beam Headlights
F21	15A	Blue	High Beam Headlights
F22	10A	Red	Tail and Parking Lights
F23	10A	Red	Brake Light Switch
F24	25A	Natural	Radio / Infotainment System
F25	15A	Blue	Cigar Lighter / 12V Power Outlet
F26	5A	Tan	Airbag / SRS Module
F27	10A	Red	Instrument Cluster

Under Driver's Seat Fuse Box

This location contains a mix of fuses and relays for various body and chassis systems.

Fuse #	Amp	Color	Circuit / Component Protected
F40	30A	Green	Blower Motor
F41	20A	Yellow	Trailer Brake Control
F42	15A	Blue	Heated Seats
F43	25A	Natural	Power Windows
F44	15A	Blue	Horn
F45	10A	Red	Windshield Wipers

Note: Fuse numbers and positions can vary slightly based on your vehicle's specific trim level and options. Always consult the printed legend on the fuse box lid or in your owner's manual to verify the correct fuse for the circuit in question.

How to Test a Fuse

A blown fuse is a common and usually easy-to-fix problem. Here's how to check if a fuse is bad:

Turn off the ignition and all electrical accessories.
Locate the suspect fuse box and remove the cover.
Identify the fuse for the malfunctioning circuit using the diagram on the fuse box lid or in this guide.
Remove the fuse. You can usually pull it straight out with your fingers, but a small fuse puller (often included in the fuse box) or a pair of needle-nose pliers can make it easier.
Inspect the fuse. Look at the thin metal strip inside the plastic body. If this strip is broken or melted, the fuse is blown and needs to be replaced.
Replace with a new fuse of the same amperage. Using a fuse with a higher amp rating can cause serious electrical damage and is a fire hazard. The amp rating is printed on top of the fuse.

Common Blown Fuses on the 2023 Mercedes-Benz Metris

Cigar Lighter / 12V Power Outlet Fuse: This is one of the most common fuses to blow, often due to a faulty phone charger or other accessory plugged into the outlet. If you find this fuse blown, first check the device you were using for any visible damage.
Radio / Infotainment System Fuse: If your radio or center screen suddenly goes blank, the fuse is a good first place to check. This can sometimes happen without a clear cause.
Blower Motor Fuse: If your climate control fan stops working on all speeds, the main blower motor fuse is the likely culprit. If you replace the fuse and it blows again, it could indicate a problem with the blower motor resistor or the motor itself.

If you've checked the fuses and are still having electrical problems, it may be time to consult a professional. Find a trusted shop on Repairius.

Before you pull a fuse on the 2023 Mercedes-Benz Metris

Use the label printed on the panel cover or the owner's manual for your exact build. Layouts change with options, model year and build date, so a chart for another truck can be wrong.

Replace a blown fuse only with the same amp rating. A larger fuse can let wiring overheat.

A fuse that blows again right away means a short or failing component downstream. Find the cause before replacing it again.

A good fuse doesn't prove the circuit works — relays, grounds and connectors fail too.

Disconnect the battery before working near high-current fuses or cables.

More specs for the 2023 Mercedes-Benz Metris

Same spec — other model years

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Values can vary by engine, trim and build date; check your VIN-specific service information. Updated 2026-07-16.

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2023 Mercedes-Benz Metris: Fuse Box Diagram & Amperage