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Ford Focus · 2012

2012 Ford Focus Air Conditioning Fuse & Relay

Air con not blowing cold? Check the compressor and clutch fuses and relay first.

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

Quick answer

Verified

Applies toBuilt 8 August 2011 to 8 January 2012Built 9 January 2012 to 1 April 2012Built 2 April 2012 to 28 May 2012Built 29 May 2012 to 3 October 2012Built 4 October 2012 to 25 August 2013

Air conditioning clutch

Fuse
27
Amperage
15A
Fuse box
Engine compartment
Location
In the engine compartment

Air conditioning

Fuse
71
Amperage
10A
Fuse box
Passenger compartment
Location
In the passenger compartment

Climate control heater, passenger airbag deactivation switch, heated seats switch, auxiliary heater, manual air conditioning heater module

Fuse
85
Amperage
7.5A
Fuse box
Passenger compartment
Location
In the passenger compartment

Air conditioning module

Fuse
12
Amperage
10A
Fuse box
Load compartment
Location
In the load (luggage) compartment

Applies to: with start-stop module

Where is the fuse box?

Engine compartment fuse box

In the engine compartment

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

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

We haven’t drawn a schematic of the engine 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 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

  • 27

    In the engine compartment

    Fuse ·15A · Air conditioning clutch

    Position not shown on the schematic. Find fuse 27 on the fuse box legend.

  • 71

    In the passenger compartment

    Fuse ·10A · Air conditioning

    Position not shown on the schematic. Find fuse 71 on the fuse box legend.

  • 85

    In the passenger compartment

    Fuse ·7.5A · Climate control heater, passenger airbag deactivation switch, heated seats switch, auxiliary heater, manual air conditioning heater module

    Position not shown on the schematic. Find fuse 85 on the fuse box legend.

  • 12

    In the load (luggage) compartment

    Fuse ·10A · Air conditioning module

    Position not shown on the schematic. Find fuse 12 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.

  • Refrigerant level

    Air conditioning slowly loses refrigerant. A system that blows cool but not cold often just needs a re-gas.

  • Compressor clutch

    With the engine running and A/C on, the centre of the compressor pulley should turn. If it doesn’t, check the fuses and relay.

  • No air at all

    If no air comes out of the vents, the problem is the heater blower, not the air conditioning.

Sources & verification

Applies toBuilt 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

Applies toBuilt 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

Applies toBuilt 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

Applies toBuilt 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

Applies toBuilt 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.