No-Crank Ford Focus Fix – Starter Fuses & Relays You Need to Check

Last Updated on May 6, 2025 by Nick

Hey what’s up guys! Is your Ford Focus not starting? Before you worry about the battery or starter motor, there’s a good chance it could be a blown fuse or faulty starter relay. In this guide, we’ll show you exactly where to find the starter fuse and relay for Ford Focus models from 2009 to 2021, broken down by generation.

Whether you’re driving a MK2, MK3, or MK4 Ford Focus, this quick guide will help you locate and test the right components—fast and easy! So let’s get into it.

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🔧 2009–2011 Ford Focus (MK2) Starter Fuse & Relay Location

✅ Engine Bay Fuse Box (Under the Hood)

1. Pop the hood and locate the main fuse box on the driver’s side.
2. Press the tabs on both sides and lift the cover off.

Key components to check:

• Starter Relay
  If your Focus is clicking or doing nothing when you turn the key, this relay might be stuck.
  • Pro Tip: While someone turns the key to “Start,” lightly tap the relay. This can sometimes free up a stuck contact.
  • Swap it with another relay—like the blower motor or rear defrost relay—to test.
• Starter Fuse (30-Amp J-Case)
  Look for a large green fuse labeled as 30A.
  Check the metal strip inside for continuity.
  Tip: If the plastic cap breaks during removal, don’t panic—it’ll still function.

✅ Interior Fuse Box (Steering Column Area)

1. Remove the panel under the steering wheel.
2. Pop open the fuse cover to access the fuses.

Ignition Fuse (20-Amp):
This yellow fuse powers the ignition switch. Pull it out and inspect the metal strip inside. If it’s broken, replace it with a new 20A fuse.

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🔧 2012–2018 Ford Focus (MK3) Starter Fuse & Relay Location

✅ Engine Bay Fuse Box (Driver’s Side)

1. Remove the plastic cover on the driver’s side near the battery.

Key components:

• Starter Relay
  If your car won’t crank, this small black relay might be to blame.
  • Tap it while someone turns the key to “Start.”
  • Swap it with the blower motor relay to test (don’t use the ECU relay).
• Starter Fuse (30-Amp J-Case)
  This large green fuse can be visually inspected through the top.
  If it’s blown, you can temporarily swap it with the rear defroster fuse to test.

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🔧 2019–2021 Ford Focus (MK4) Starter Fuse & Relay Location

✅ Engine Bay Fuse Box (Nearside, Next to Battery)

1. Open the engine bay fuse box—located between the battery and the left fender (CHECK THIS VIDEO).
2. Look for the red 30-Amp MCase fuse—this controls the starter motor.

• Check the metal strip inside the fuse. If it’s burnt or broken, replace it with the same 30A MCase fuse.
• If the fuse looks fine but the car still won’t start, test the wiring or socket with a voltmeter.

✅ Interior Fuse Box (Passenger Side Console)

1. Remove the cover on the lower passenger side of the center console.
2. Look for a red 10-Amp Micro2 fuse.

This fuse powers the ignition switch. If it’s blown, the car won’t even try to crank. Replace it with a Micro2 10A fuse—easily available at any parts store.

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✅ Final Thoughts

And that’s the complete guide to Ford Focus starter fuse and relay locations (2009–2021). If your car won’t start, checking these components can save you time, money, and stress.

Still not starting? If all fuses and relays check out, consider testing:

• The ignition switch wiring
• The starter motor itself
• Ground connections and battery cables

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💬 Need Help?

Drop a comment below if you’re still stuck or have questions about your Ford Focus starter system. And if you found this guide helpful, share it, like it, and check out our DIY car repair videos on YouTube!

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