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Vauxhall Astra · 2020

2020 Vauxhall Astra USB Socket Fuse

USB port not charging your phone? Check the fuse the manufacturer labels for the USB socket.

  • UK specification
  • Verified data
  • Checked 15 October 2026
  • Sources

Quick answer

Verified

Applies toHandbook edition October 2019Handbook edition August 2020

Vauxhall’s handbook doesn’t print fuse ratings, so none is shown. Fit a replacement with the same rating as the fuse you remove — the handbook says: “Data on the replacement fuse must match the data on the defective fuse.”

USB socket

Fuse
28
Fuse box
Instrument panel
Location
Instrument panel (Vauxhall: “The fuse box is located behind a cover.”).

Parking assist / Side blind spot alert / Infotainment system / USB socket

Fuse
34
Fuse box
Instrument panel
Location
Instrument panel (Vauxhall: “The fuse box is located behind a cover.”).

Where is the fuse box?

Instrument panel fuse box

Instrument panel (Vauxhall: “The fuse box is located behind a cover.”).

  1. Pull the cover on the left side to remove.
  2. After having changed defective fuses, close the fuse box cover:
  3. 1. Apply the cover on the right side.
  4. 2. Fold the left side of the cover forwards.
  5. Take care that the securing clamp is guided as shown in the illustration.

Fuse box diagram

Full 2020 Vauxhall Astra fuse chart
Instrument panelCarFixData schematic
Instrument panel fuse box: map of 37 fuse positions, fuse 28 and 34 highlighted12345678910111213141516171819202122232425262729303132333536372834
These fusesOther fuse positionsNot usedOur own schematic, drawn from the fuse positions printed in Vauxhall’s handbook illustration of this fuse box. Not to scale and not a manufacturer drawing — always match the number on the fuse box before pulling a fuse.

Where to look

  • 28

    Instrument panel (Vauxhall: “The fuse box is located behind a cover.”).

    Fuse · USB socket

    Highlighted on the instrument panel map.

  • 34

    Instrument panel (Vauxhall: “The fuse box is located behind a cover.”).

    Fuse · Parking assist / Side blind spot alert / Infotainment system / USB socket

    Highlighted on the instrument panel map.

The map shows where each fuse sits. 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.

  • Try another cable and device

    Worn cables are the most common cause. Test with a cable and phone you know work.

  • Check the ignition position

    USB sockets often only have power with the ignition on or the engine running.

  • Look inside the port

    Dust or debris in the port can stop the plug seating. Clean it gently with the ignition off, using a non-metallic tool.

Sources & verification

Applies toHandbook edition October 2019

Status
Verified
Specification
UK market
Last checked
15 October 2026

Applies toHandbook edition August 2020

Status
Verified
Specification
UK market
Last checked
15 October 2026

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