Ford C-Max fuse box diagrams: Complete guide for all generations

BySerge Barrett

The Ford C-Max is a practical and efficient compact multi-purpose vehicle (MPV). Knowing the correct fuse box locations and diagrams is essential for troubleshooting electrical issues such as non-working lights, power windows, radio, air conditioning, or hybrid system problems.

The C-Max was produced in two generations. Below you will find complete fuse box diagrams and assignments for both generations.

1st generation Ford C-Max (2003–2010)

Also known as the C-Max Mk1 (Europe) or Focus C-Max. Fuse boxes are located in the passenger compartment (behind a cover on the driver’s side) and in the engine compartment (on the passenger’s side near the battery).

Passenger Compartment Fuse Box (Interior):

  • 1: 7.5A – Ignition switch, Keyless entry
  • 2: 7.5A – Instrument cluster, Diagnostic connector
  • 3: 7.5A – Air conditioning control
  • 4: 10A – Headlight levelling
  • 5: 10A – Daytime running lights
  • 6: 10A – Reversing lights
  • 7: 10A – Brake lights
  • 8: 15A – Central locking
  • 9: 20A – Horn
  • 10: 15A – Windscreen wipers
  • 11: 15A – Rear window wiper
  • 12: 20A – Cigarette lighter / Power outlet
  • 13: 10A – Audio system
  • 14: 10A – Interior lighting
  • 15: 7.5A – Instrument cluster
  • 16: 10A – Heated mirrors
  • 17: 15A – Power windows
  • 18: 20A – Driver’s power window
  • 19: 20A – Passenger’s power window
  • 20: 7.5A – SRS (Airbag system)
  • 21: 7.5A – ABS / ESP control module
  • 22: 7.5A – Parking aid

Engine Compartment Fuse Box (Under Hood):

  • 1: 60A – Main power supply to passenger compartment fuse box
  • 2: 60A – Glow plugs (diesel models)
  • 3: 40A – Cooling fan
  • 4: 40A – Blower motor
  • 5: 30A – ABS / ESP pump
  • 6: 30A – Heated rear window
  • 7: 20A – Engine management system
  • 8: 20A – Fuel pump
  • 9: 15A – Horn
  • 10: 10A – Headlight high beam (left)
  • 11: 10A – Headlight high beam (right)
  • 12: 10A – Headlight low beam (left)
  • 13: 10A – Headlight low beam (right)
  • 14: 10A – Daytime running lights
  • 15: 15A – Fuel injectors
  • 16: 10A – Engine control unit
  • 17: 30A – Starter motor
  • 18: 40A – Cooling fan (high speed)
  • 19: 60A – Battery main fuse

Additional Relay Box (near engine compartment): Contains relays for cooling fans, fuel pump, starter, and heated rear window.

2nd generation Ford C-Max (2010–2019)

The second generation (C-Max Mk2) was offered in both standard and Grand C-Max versions. It was available with gasoline, diesel, and hybrid (C-Max Hybrid / Energi) powertrains. Fuse boxes are located in the passenger compartment (left side of the dashboard) and in the engine compartment (on the right side near the battery).

Passenger Compartment Fuse Box (Driver’s Side):

  • 1: 10A – Lighting control
  • 2: 7.5A – Instrument cluster
  • 3: 7.5A – Audio system / SYNC
  • 4: 10A – Diagnostic connector
  • 5: 10A – Keyless entry / Push button start
  • 6: 10A – Air conditioning control
  • 7: 10A – Steering wheel controls
  • 8: 10A – Moonroof
  • 9: 15A – Power outlet (center console)
  • 10: 10A – USB ports
  • 11: 10A – Interior lighting
  • 12: 20A – Power windows
  • 13: 20A – Driver’s power window
  • 14: 20A – Passenger’s power window
  • 15: 20A – Rear power windows (Grand C-Max)
  • 16: 15A – Rear wiper
  • 17: 20A – Cigarette lighter / 12V power outlet
  • 18: 10A – SRS (Airbag)
  • 19: 7.5A – ABS / Stability control
  • 20: 7.5A – Blind spot monitoring
  • 21: 15A – Heated seats
  • 22: 10A – Climate control blower
  • 23: 10A – Parking assistance
  • 24: 15A – Fuel pump (gasoline models)

Engine Compartment Fuse Box (Passenger Side):

  • 1: 60A – Main fuse (passenger compartment)
  • 2: 40A – Blower motor
  • 3: 30A – ABS pump
  • 4: 30A – Heated rear window
  • 5: 40A – Cooling fan
  • 6: 30A – Starter motor
  • 7: 20A – Engine control unit
  • 8: 20A – Fuel pump
  • 9: 15A – Horn
  • 10: 10A – Headlight high beam
  • 11: 10A – Headlight low beam
  • 12: 15A – Daytime running lights
  • 13: 10A – Transmission control module
  • 14: 10A – Battery monitoring system
  • 15: 20A – Hybrid high-voltage battery cooling fan (C-Max Hybrid / Energi)
  • 16: 30A – Inverter / DC-DC converter (Hybrid models)
  • 17: 40A – Electric power steering (EPS)
  • 18: 60A – Main power supply
  • 19: 100A – Alternator (non-hybrid)

Hybrid / Energi Specific Fuses (C-Max Hybrid and C-Max Energi):

  • High-voltage safety fuses located near the high-voltage battery (under the rear floor)
  • 10A – Hybrid control module
  • 15A – High-voltage battery cooling fan
  • 30A – DC-DC converter
  • 5A – High-voltage interlock loop

Important notes for all C-Max models

  • Always replace a fuse with one of the exact same amperage.
  • Hybrid models (C-Max Hybrid and Energi) have additional high-voltage fuses and safety systems. Never attempt to service high-voltage components yourself.
  • If a fuse blows repeatedly, there is usually an underlying short circuit that must be diagnosed.
  • The fuse box cover usually has a diagram printed on it — use it as the primary reference for your specific vehicle.
  • For exact fuse assignments, always cross-reference with your owner’s manual, as minor variations exist between gasoline, diesel, and hybrid versions.

Regularly checking and replacing blown fuses can prevent bigger electrical problems and keep your Ford C-Max running reliably.

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