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Ford Focus · 2012

2012 Ford Focus Central Locking Fuse

Doors not locking or unlocking? Find the fuses Ford lists for the central locking.

  • UK specification
  • Verified data
  • Checked 14 October 2026
  • Sources
Which 2012 Focus do you have?

The central locking fuse differs between versions of the 2012 Ford Focus. Until you choose, every possible result is shown.

Not sure of your build date?
  • Many cars carry a manufacturer’s label (often called the VIN plate) that can show the build or production date. It is commonly on a door pillar, under the bonnet or at the base of the windscreen, but the exact place varies.
  • Your owner’s handbook, service record or original sales paperwork may show the build date or specification.
  • The first registration date on your V5C logbook is not the build date. Cars are often built weeks or months before they are registered, so it is only a rough guide near a changeover.
  • A franchised dealer can usually confirm the build date and specification from your VIN.
  • Still unsure? Compare the legend on your fuse box cover with each option.

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 Built 8 August 2011 to 8 January 2012

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

Driver's door lock, double locking

Fuse
66
Amperage
20A
Fuse box
Passenger compartment
Location
In the passenger compartment

Central locking

Fuse
70
Amperage
20A
Fuse box
Passenger compartment
Location
In the passenger compartment

Central locking ground

Fuse
83
Amperage
20A
Fuse box
Passenger compartment
Location
In the passenger compartment

Driver's door lock and double locking ground

Fuse
84
Amperage
20A
Fuse box
Passenger compartment
Location
In the passenger compartment

Door module (left-hand front) (electric windows, central locking, electric folding mirrors, heated exterior mirrors)

Fuse
4
Amperage
25A
Fuse box
Load compartment
Location
In the load (luggage) compartment

Door module (right-hand front) (electric windows, central locking, electric folding mirrors, heated exterior mirrors)

Fuse
5
Amperage
25A
Fuse box
Load compartment
Location
In the load (luggage) compartment

Quick answer

Verified

Option B Built 9 January 2012 to 1 April 2012 or Built 2 April 2012 to 28 May 2012 or Built 29 May 2012 to 3 October 2012 or Built 4 October 2012 to 25 August 2013

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

Driver's door lock, double locking

Fuse
66
Amperage
20A
Fuse box
Passenger compartment
Location
In the passenger compartment

Central locking

Fuse
70
Amperage
20A
Fuse box
Passenger compartment
Location
In the passenger compartment

Central locking ground

Fuse
83
Amperage
20A
Fuse box
Passenger compartment
Location
In the passenger compartment

Driver's door unlock and double locking ground

Fuse
84
Amperage
20A
Fuse box
Passenger compartment
Location
In the passenger compartment

Door module (left-hand front) (electric windows, central locking, electric folding mirrors, heated exterior mirrors)

Fuse
4
Amperage
25A
Fuse box
Load compartment
Location
In the load (luggage) compartment

Door module (right-hand front) (electric windows, central locking, electric folding mirrors, heated exterior mirrors)

Fuse
5
Amperage
25A
Fuse box
Load compartment
Location
In the load (luggage) compartment

Where is the fuse box?

Option A Built 8 August 2011 to 8 January 2012

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.

Load compartment fuse box

In the load (luggage) compartment

Our source doesn’t describe how to open this fuse box. Check your owner’s handbook.

Option B Built 9 January 2012 to 1 April 2012 or Built 2 April 2012 to 28 May 2012 or Built 29 May 2012 to 3 October 2012 or Built 4 October 2012 to 25 August 2013

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.

Load compartment fuse box

In the load (luggage) compartment

Our source doesn’t describe how to open this fuse box. Check your owner’s handbook.

Fuse box diagram

Full 2012 Ford Focus fuse chart

Option A Built 8 August 2011 to 8 January 2012

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.

We haven’t drawn a schematic of the load 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

  • 66

    In the passenger compartment

    Fuse ·20A · Driver's door lock, double locking

    Position not shown on the schematic. Find fuse 66 on the fuse box legend.

  • 70

    In the passenger compartment

    Fuse ·20A · Central locking

    Position not shown on the schematic. Find fuse 70 on the fuse box legend.

  • 83

    In the passenger compartment

    Fuse ·20A · Central locking ground

    Position not shown on the schematic. Find fuse 83 on the fuse box legend.

  • 84

    In the passenger compartment

    Fuse ·20A · Driver's door lock and double locking ground

    Position not shown on the schematic. Find fuse 84 on the fuse box legend.

  • 4

    In the load (luggage) compartment

    Fuse ·25A · Door module (left-hand front) (electric windows, central locking, electric folding mirrors, heated exterior mirrors)

    Position not shown on the schematic. Find fuse 4 on the fuse box legend.

  • 5

    In the load (luggage) compartment

    Fuse ·25A · Door module (right-hand front) (electric windows, central locking, electric folding mirrors, heated exterior mirrors)

    Position not shown on the schematic. Find fuse 5 on the fuse box legend.

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

Option B Built 9 January 2012 to 1 April 2012 or Built 2 April 2012 to 28 May 2012 or Built 29 May 2012 to 3 October 2012 or Built 4 October 2012 to 25 August 2013

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.

We haven’t drawn a schematic of the load 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

  • 66

    In the passenger compartment

    Fuse ·20A · Driver's door lock, double locking

    Position not shown on the schematic. Find fuse 66 on the fuse box legend.

  • 70

    In the passenger compartment

    Fuse ·20A · Central locking

    Position not shown on the schematic. Find fuse 70 on the fuse box legend.

  • 83

    In the passenger compartment

    Fuse ·20A · Central locking ground

    Position not shown on the schematic. Find fuse 83 on the fuse box legend.

  • 84

    In the passenger compartment

    Fuse ·20A · Driver's door unlock and double locking ground

    Position not shown on the schematic. Find fuse 84 on the fuse box legend.

  • 4

    In the load (luggage) compartment

    Fuse ·25A · Door module (left-hand front) (electric windows, central locking, electric folding mirrors, heated exterior mirrors)

    Position not shown on the schematic. Find fuse 4 on the fuse box legend.

  • 5

    In the load (luggage) compartment

    Fuse ·25A · Door module (right-hand front) (electric windows, central locking, electric folding mirrors, heated exterior mirrors)

    Position not shown on the schematic. Find fuse 5 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.

  • Key or remote battery

    If the doors work from the inside switch but not the remote, replace the key fob battery first.

  • One door only

    If a single door won’t lock, its lock motor or door module is more likely than a fuse.

  • Several fuses

    Ford often splits central locking over more than one fuse (for example lock, unlock and double locking). Check every fuse listed.

Sources & verification

Built 8 August 2011 to 8 January 2012

Status
Verified
Specification
UK market
Last checked
14 October 2026
  • Manufacturer manual listingFord UK — 2011 Focus (2010) owner manuals · Ford Motor Company · Owner’s Manual (Vehicles Built From: 08/08/2011 Vehicles Built Up To: 08/01/2012) · Accessed 14 October 2026
  • Manufacturer manual listingFord UK — 2012 Focus (2010) owner manuals · Ford Motor Company · Owner’s Manual (Vehicles Built From: 08/08/2011 Vehicles Built Up To: 08/01/2012) · Accessed 14 October 2026
  • Owner’s manualFord Focus (2010) Owner’s Manual — CG3568en, edition 08/2011 · Ford Motor Company · Fuse specification chart — Engine compartment fuse box (pp. 180–182); Fuse specification chart — Passenger compartment fuse box (pp. 183–185); Fuse specification chart — Load compartment fuse box (pp. 185–187) · Accessed 14 October 2026

Built 9 January 2012 to 1 April 2012

Status
Verified
Specification
UK market
Last checked
14 October 2026
  • Manufacturer manual listingFord UK — 2012 Focus (2010) owner manuals · Ford Motor Company · Owner’s Manual (Vehicles Built From: 09/01/2012 Vehicles Built Up To: 01/04/2012) · Accessed 14 October 2026
  • Owner’s manualFord Focus (2010) Owner’s Manual — CG3568en, edition 01/2012 · Ford Motor Company · Fuse specification chart — Engine compartment fuse box (pp. 180–182); Fuse specification chart — Passenger compartment fuse box (pp. 183–185); Fuse specification chart — Load compartment fuse box (pp. 185–187) · Accessed 14 October 2026

Built 2 April 2012 to 28 May 2012

Status
Verified
Specification
UK market
Last checked
14 October 2026
  • Manufacturer manual listingFord UK — 2012 Focus (2010) owner manuals · Ford Motor Company · Owner’s Manual (Vehicles Built From: 02/04/2012 Vehicles Built Up To: 28/05/2012) · Accessed 14 October 2026
  • Owner’s manualFord Focus (2010) Owner’s Manual — CG3568en, edition 04/2012 · Ford Motor Company · Fuse specification chart — Engine compartment fuse box (pp. 186–188); Fuse specification chart — Passenger compartment fuse box (pp. 190–191); Fuse specification chart — Load compartment fuse box (pp. 191–193) · Accessed 14 October 2026

Built 29 May 2012 to 3 October 2012

Status
Verified
Specification
UK market
Last checked
14 October 2026
  • Manufacturer manual listingFord UK — 2012 Focus (2010) owner manuals · Ford Motor Company · Owner’s Manual (Vehicles Built From: 29/05/2012 Vehicles Built Up To: 03/10/2012) · Accessed 14 October 2026
  • Owner’s manualFord Focus (2010) Owner’s Manual — CG3568en, edition 06/2012 · Ford Motor Company · Fuse specification chart — Engine compartment fuse box (pp. 187–189); Fuse specification chart — Passenger compartment fuse box (pp. 191–192); Fuse specification chart — Load compartment fuse box (pp. 192–194) · Accessed 14 October 2026

Built 4 October 2012 to 25 August 2013

Status
Verified
Specification
UK market
Last checked
14 October 2026
  • Manufacturer manual listingFord UK — 2012 Focus (2010) owner manuals · Ford Motor Company · Owner’s Manual (Vehicles Built From: 04/10/2012 Vehicles Built Up To: 25/08/2013) · Accessed 14 October 2026
  • Manufacturer manual listingFord UK — 2013 Focus (2010) owner manuals · Ford Motor Company · Owner’s Manual (Vehicles Built From: 04/10/2012 Vehicles Built Up To: 25/08/2013) · Accessed 14 October 2026
  • Owner’s manualFord Focus (2010) Owner’s Manual — CG3568en, edition 01/2013 · Ford Motor Company · Fuse specification chart — Engine compartment fuse box (pp. 191–193); Fuse specification chart — Passenger compartment fuse box (pp. 195–196); Fuse specification chart — Load compartment fuse box (pp. 196–198) · Accessed 14 October 2026

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