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Ford Fiesta · 2017

2017 Ford Fiesta Heated Rear Window Fuse

Rear screen not demisting? Check the heated rear window fuse.

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

Partly covered: this page shows Ford’s Fiesta (2012) data only. Ford UK also lists Fiesta (2017) and Fiesta Vignale (2017) owner’s manuals for 2017, which we haven’t verified yet. If your car is one of those, this chart may not apply — check your owner’s manual or fuse box legend.

Quick answer

Verified
Fuse
33
Amperage
20A
Fuse box
Engine compartment
Location
In the engine compartment

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.

Fuse box diagram

Full 2017 Ford Fiesta 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.

Where to look

  • 33

    In the engine compartment

    Fuse ·20A · Heated rear window

    Position not shown on the schematic. Find fuse 33 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.

  • Only some lines clear

    If parts of the screen clear and others don’t, one of the printed heating lines is broken. A fuse fails all or nothing.

  • Connectors on the glass

    Power reaches the glass through small tabs at each side. Check both are still attached.

  • Engine running

    Some cars only power the heated rear window with the engine running.

Sources & verification

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.