Used Mercedes-Benz EQB Fuse Box

Yes, the EQB does have fuse boxes — electric vehicles still use fused circuits to protect low-voltage systems such as lighting, control modules, and auxiliary equipment, even though there is no combustion engine. The EQB carries fuse boxes in locations such as the passenger compartment and the engine bay area, just as a conventional Mercedes would. If you've been told otherwise, it's worth confirming with a breaker exactly which fuse box location you need.

The Mercedes-Benz EQB (X243) launched in the UK in 2022 and received a facelift in 2024, which can bring changes to electrical architecture including fuse box configurations. Parts from within the pre-facelift period (2022–2023) are more likely to interchange with each other, but fitting a pre-facelift fuse box to a facelifted 2024 car — or vice versa — is a boundary you should confirm with the breaker against your exact registration before purchasing.

The powertrain variant can matter for fuse boxes on the EQB because the electrical distribution and circuit protection layout may differ between the single-motor (250/250+) rear-wheel-drive models and the dual-motor 4MATIC versions. You should give the breaker your full registration so they can confirm the correct fuse box for your specific drivetrain and voltage system configuration. Don't assume a fuse box from a 250 will be a straight swap into a 350 4MATIC without checking.

Trim level — whether Sport, Progressive, or AMG Line — generally does not affect the fuse box specification on the EQB, as trim differences relate to cosmetic and comfort features rather than fundamental electrical architecture. The drivetrain variant and model year are far more important factors than trim when sourcing this part. That said, always give the breaker your registration to cross-reference the part number, as optional equipment packages can occasionally add circuits that affect fuse box configuration.

Although the EQA (H243) and EQB (X243) share platform underpinnings and some components, the EQB is a larger SUV with a different body and potentially different electrical layouts, so the fuse boxes are not guaranteed to be interchangeable. Some internal fuse box sub-components or relays may be shared, but the assemblies themselves are likely different part numbers. Run the part number from a potential EQA donor past the breaker alongside your EQB registration before committing to a purchase.

Give the breaker your full registration number so they can look up the exact build specification, including model year, drivetrain (single or dual motor), and any factory-fitted options that may affect the fuse box. Also specify which fuse box location you need — passenger compartment, underbonnet, or elsewhere — as the EQB has more than one. Having your existing fuse box's part number to hand, if accessible, will also help the breaker find an accurate match.