Find a fuse

Ford Focus · 2018

2018 Ford Focus Radio Fuse

Radio or head unit completely dead? Check this fuse first.

  • UK specification
  • Verified data
  • Checked 14 October 2026
  • Sources
Which 2018 Focus do you have?

The radio fuse differs between versions of the 2018 Ford Focus. Until you choose, every possible result is shown.

Not sure which Focus you have?
  • Ford UK lists the 2018 Focus under more than one model name: Focus (2015), Focus RS (2015), Focus Electric (2015), Focus (2018) and Focus Vignale (2018). Their fuse layouts differ.
  • Ford UK’s Owner Manuals page can find your car’s handbook from its VIN. The page it opens is titled with Ford’s model name, for example “Focus (2015)”.
  • Your printed owner’s handbook, or a franchised dealer with your VIN, can also confirm it.

If you can’t confirm it, keep both results in mind and check the fuse box legend before removing anything.

Quick answer

Verified

Option A Focus (2015) or Focus RS (2015)

  • UK specification
  • Verified data
  • Checked 14 October 2026
  • Sources
Fuse
F79
Amperage
15A
Fuse box
Passenger compartment
Location
In the passenger compartment

Quick answer

Verified

Option B Focus Electric (2015)

  • UK specification
  • Verified data
  • Checked 14 October 2026
  • Sources
Fuse
F79
Amperage
15A
Fuse box
Passenger compartment
Location
In the passenger compartment

Quick answer

Verified

Option C Focus (2018) or Focus Vignale (2018)

  • UK specification
  • Verified data
  • Checked 14 October 2026
  • Sources

Voice control. Audio unit.

Fuse
17
Amperage
15A
Fuse box
Passenger compartment
Location
Below the glove compartment

Audio unit.

Fuse
23
Amperage
20A
Fuse box
Passenger compartment
Location
Below the glove compartment

Where is the fuse box?

Option A Focus (2015) or Focus RS (2015)

Passenger compartment fuse box

In the passenger compartment

  1. Pinch the retaining clips to release the cover.
  2. Lower the fuse box cover and pull it towards you.

Option B Focus Electric (2015)

Passenger compartment fuse box

In the passenger compartment

  1. Pinch the retaining clips to release the cover.
  2. Lower the fuse box cover and pull it toward you.

Option C Focus (2018) or Focus Vignale (2018)

Passenger compartment fuse box

Below the glove compartment

  1. Fold back the carpet under the glove compartment.
  2. Carefully remove the cover.

Fuse box diagram

Full 2018 Ford Focus fuse chart

Option A Focus (2015) or Focus RS (2015)

We haven’t drawn a schematic of the passenger compartment fuse box for this version yet. Use the fuse and relay numbers on this page and the legend on the fuse box to find the right position.

Where to look

  • F79

    In the passenger compartment

    Fuse ·15A · Audio unit. Navigation DVD player. Hazard flasher switch. Door lock switch.

    Position not shown on the schematic. Find fuse F79 on the fuse box legend.

Always confirm the number against the legend on the fuse box cover before pulling anything.

Option B Focus Electric (2015)

We haven’t drawn a schematic of the passenger compartment fuse box for this version yet. Use the fuse and relay numbers on this page and the legend on the fuse box to find the right position.

Where to look

  • F79

    In the passenger compartment

    Fuse ·15A · Audio unit. Hazard flasher switch.

    Position not shown on the schematic. Find fuse F79 on the fuse box legend.

Always confirm the number against the legend on the fuse box cover before pulling anything.

Option C Focus (2018) or Focus Vignale (2018)

We haven’t drawn a schematic of the passenger compartment fuse box for this version yet. Use the fuse and relay numbers on this page and the legend on the fuse box to find the right position.

Where to look

  • 17

    Below the glove compartment

    Fuse ·15A · Voice control. Audio unit.

    Position not shown on the schematic. Find fuse 17 on the fuse box legend.

  • 23

    Below the glove compartment

    Fuse ·20A · Audio unit.

    Position not shown on the schematic. Find fuse 23 on the fuse box legend.

Always confirm the number against the legend on the fuse box cover before pulling anything.

How to replace the fuse safely

  1. Switch off the ignition and all electrical equipment. Take the key out, or move a keyless fob away from the car.
  2. Open the fuse box and find the fuse using the number on the cover legend or the chart on this page.
  3. Pull the fuse straight out with the plastic fuse puller (usually clipped inside the fuse box) or fine-nose pliers.
  4. Look at the metal strip inside the fuse. A broken or burnt strip means it has blown.
  5. Fit a new fuse with exactly the same amperage rating. The number on top and the colour should match.
  6. Refit the cover, switch on and test the component.
  • Never fit a fuse with a higher amperage rating than specified. It can let wiring overheat.
  • Never bridge a fuse with wire, foil or anything else.

Fuse keeps blowing?

A fuse that blows again straight away is doing its job. Something on that circuit is drawing too much current. Common causes are damaged wiring shorting to the bodywork, a failing motor or socket, water getting in, or a faulty accessory. Fitting fuse after fuse, or a bigger fuse, won’t fix the fault and can overheat the wiring. Have the circuit tested by an auto electrician.

Not the fuse? Check these next.

  • Radio security code

    After the battery has been disconnected, some radios show "CODE" or "LOCKED" and need a security code to work again.

  • Power-saving mode

    Some cars switch the radio off after a set time with the engine off to protect the battery.

  • Connector behind the unit

    If the radio has been removed or replaced, check the plug at the back is fully seated.

Sources & verification

Focus (2015) · Built from 5 September 2016

Status
Verified
Specification
UK market
Last checked
14 October 2026

Focus RS (2015) · Built from 5 September 2016

Status
Verified
Specification
UK market
Last checked
14 October 2026

Focus Electric (2015) · Built from 16 January 2017

Status
Verified
Specification
UK market
Last checked
14 October 2026

Focus (2018) · Built up to 14 October 2018

Status
Verified
Specification
UK market
Last checked
14 October 2026

Focus (2018) · Built 15 October 2018 to 13 January 2019

Status
Verified
Specification
UK market
Last checked
14 October 2026

Focus Vignale (2018) · Built up to 14 October 2018

Status
Verified
Specification
UK market
Last checked
14 October 2026

Focus Vignale (2018) · Built 15 October 2018 to 13 January 2019

Status
Verified
Specification
UK market
Last checked
14 October 2026

Fuse layouts can differ between trim levels and optional equipment. Always confirm against the legend on your fuse box.