Expert Mini ECU Repair Services for All Major Vehicle Systems

Commonly Failing Mini ECUs

Footwell module (FRM3) commonly faulty with window, light and wiper issues.

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CAS3 immobiliser system commonly faulty with none start issues.

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Bosch engine ECU commonly faulty with fault code 36E2 (5V sensor supply out of range).

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At ECU Fix, we specialise in Mini ECU repair across all major vehicle systems. Whether you’re experiencing faults with the engine ECU, ABS pump, gearbox ECU, or body control module, our team offers fast, affordable, and reliable repairs. Instead of replacing your ECU, we restore its full functionality—saving you time and money.

If your ECU appears in our online repair catalogue, we’ll test it within 24 hours—or your repair is free. However, even if it’s not listed, we can usually still help. Just send us your part number or vehicle details and we’ll confirm compatibility.

Every successful repair comes with a lifetime warranty, giving you peace of mind well beyond the fix.

Our Mini ECU Repair Services

We repair all major electronic control units found in Mini models, including the Mini One, Cooper, Cooper S, Clubman, Countryman, and more.

Mini Engine ECU Repair

We resolve common engine ECU issues such as:

  • No-start or intermittent starting
  • Misfires and poor engine performance
  • Communication errors with diagnostics
  • Corrupted data or internal faults

Our repairs restore original performance and eliminate the need for costly replacements or recoding.

Mini ABS Pump Repair

ABS pump faults can affect braking performance and safety. We repair:

  • ABS or DSC warning lights
  • Faulty brake pressure sensors
  • Inactive pump motors
  • Communication loss with diagnostics

We work on Bosch and TRW ABS systems found in most Mini models.

Mini Body Control Module (BCM) Repair

Your Mini’s BCM controls a wide range of systems. We fix:

  • Electric window and lighting issues
  • Central locking faults
  • Immobiliser-related no-starts
  • Water damage or short circuits

One BCM repair can resolve multiple electrical issues at once.

Mini Instrument Cluster Repair

We repair faulty clusters that cause:

  • Blank, flickering, or dim displays
  • Inaccurate speed or fuel readings
  • Pixel and backlight issues
  • Unresponsive gauges or warning lights

No recoding is usually needed—just plug in and go.

Mini Gearbox ECU & Mechatronics Repair

Gearbox ECUs and mechatronics are critical for smooth shifting. We repair:

  • Harsh, delayed, or stuck gear changes
  • No drive or reverse
  • Limp mode or TCU communication loss
  • Shift solenoid or control unit faults

Mini Airbag Module Repair

When the airbag light stays on, we can repair the airbag ECU to fix:

  • Crash data that needs clearing
  • Communication or wiring errors
  • Water-damaged units
  • Persistent fault codes

Most airbag modules are returned fully reset and ready to refit.

Mini Electric Power Steering Repair

Steering faults can be dangerous. We repair EPS units suffering from:

  • Loss of steering assist
  • Warning lights or fault codes
  • Inconsistent or heavy steering
  • Sensor or motor control issues

Every repaired unit is bench-tested and comes with a lifetime warranty.

Why Choose ECU Fix for Mini ECU Repair?

  • 24-Hour Testing on catalogue-listed ECUs—or the repair is free
  • Lifetime Warranty on all completed repairs
  • UK-Wide Courier Collection & Return available
  • Repairs handled in-house by experienced technicians
  • No Fix, No Fee – only pay collection & return shipping if unrepairable

How Our Mini ECU Repair Service Works

1. Book Your Repair

Get started by:

2. Send or Arrange Collection

You can ship your ECU to us or request a secure UK-wide courier pickup.

3. We Test and Repair

  • We test catalogue units within 24 hours
  • For unlisted units, we assess and confirm repairability
  • If the unit can’t be repaired, you only pay collection & return shipping

4. Receive and Refit

We return your working ECU—fully tested, ready to install, and backed by our lifetime warranty.

GET IN TOUCH

Book your ECU repair today!

Contact us

FAQs

Can a damaged ECU be repaired?

Yes, in most cases, a damaged ECU can absolutely be repaired. At ECU Fix, we regularly restore faulty ECUs by addressing issues such as power loss, software corruption, communication errors, and component failure. Rather than replacing the unit, our in-house technicians test and repair it—saving you time, hassle, and expense. Each successful repair comes with a lifetime warranty.

Is it worth fixing an ECU?

Definitely. Repairing an ECU is almost always more cost-effective than replacing it. While new units can cost hundreds of pounds—and often require dealer-level coding—our repairs typically start from just £200. You avoid unnecessary programming, reduce your downtime, and receive a guaranteed fix, all for a fraction of the replacement cost.

How much does it cost to repair an ECU?

At ECU Fix, ECU repairs generally start from £200, depending on the vehicle, fault, and ECU type. The final price will vary depending on whether you’re repairing an engine ECU, ABS module, or gearbox controller. However, if your part is listed in our catalogue, we test it within 24 hours—or your repair is free. If we can’t fix it, you only pay return shipping—no fix, no fee.

How do I reset my ECU on my Mini Cooper?

To perform a basic ECU reset on a Mini Cooper, follow these steps:

  1. Turn the ignition key to position II (do not start the engine).
  2. Press and hold the accelerator pedal fully for about 10 seconds.
  3. Turn the ignition off while still holding the pedal.
  4. Release the pedal, wait a few seconds, and then restart the car.

This process may clear minor adaptations but won’t resolve deeper faults or stored trouble codes. If your ECU is showing persistent issues, it’s best to have it tested professionally. We can diagnose and repair most Mini ECUs.