UK postal module repairs · Please confirm your part number before sending. Start a repair request
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Contact hours

Monday–Friday08:30–17:30
Saturday09:00–14:00
SundayClosed

UK time. Postal service and mobile visits by arrangement. Parts drop-off by prior arrangement. Contact us before visiting.

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Automotive electronics specialists

Automotive Electronic Module Repair.Tested & Repaired by Post – UK-wide.

ECU repair and testing, BCM, ABS/ESP, instrument cluster, TCM and JLR 48V DC/DC converter repair. Your original unit is tested, repaired and returned. Find your repair by vehicle, part number or fault code.

Find your repair

What are you trying to repair?

Browse all repairs →

Not sure which repair you need? Start a repair request

Collection & deliveryTracked shipping options for your module.

Specialist diagnosticsFault confirmed on the bench before repair.

Repair & verificationTested again before it leaves the lab.

Workshop supportClear reports for garages and drivers.

Repair Categories

Automotive electronic units we repair.

Choose a category to see the modules, part numbers and fault codes we cover.

View all repairs →

Also: steering electronics and other modules. Quote requests are assessed individually – we confirm whether a repair is possible after checking your part number and fault. Can't find your unit? Search by vehicle, part number or fault code.

Why T-Tronic

Specialist electronics repair. Keeping original modules in service.

Replacing a control module with a new part often means dealer prices, long waits and coding. We repair the module already fitted to your vehicle, at component level, and test it before it goes back. Every repair comes with a written report, so the garage and the driver know exactly what was checked.

Specialist diagnosticsOscilloscope, bench power and CAN tools.

Component-level repairWe fix the fault, not just the symptom.

Bench testingBefore and after repair, same test.

Written test reportPASS, FAIL or PARTIAL, with test limits.

Workshop supportHelp with fitting and adaptation.

Clear assessmentFault and price confirmed before any repair.

ECU and gearbox control unit on the test bench at T-Tronic Lab 
How it works

A simple process. From fault to repair.

You remove the module and send it to us. We diagnose, repair and test it, then send it back ready to refit.

See the full repair process →
  1. STEP 1

    Send your unit

    Order your repair or send a request, pack the module and post it with tracking.

  2. STEP 2

    We assess & repair

    We confirm the fault on the bench, agree any extra work with you, then repair.

  3. STEP 3

    Get it back

    The unit is retested and returned with a written report.

Get started

Choose the right route for your unit.

Know the repair you need? Order it directly. Not sure? Send us the details and we will advise before you post anything.

Repair my original unit

Your own module is repaired and returned, so in most cases it keeps its coding and VIN data.

  • Bench diagnosis before repair
  • Component-level repair
  • Retest and written report
How we repair modules →

Not sure it's the module?

Order a bench diagnostic report and confirm the fault before you buy anything.

Bench diagnostics →

Can't find the exact repair?

Send the part number, vehicle and symptoms. We reply with an assessment.

Send a repair request →
For garages & vehicle owners

Built for garages. Simple for vehicle owners.

For garages

A repair partner for the electronic faults that tie up a ramp.

  • Bench test reports to show your customer
  • Repair of the original unit where technically possible
  • Direct technical contact on WhatsApp
More for garages

For vehicle owners

A clear price and a clear answer, without dealer replacement costs.

  • Find your repair by vehicle or part number
  • Step-by-step packing and shipping guide
  • Report explaining what was tested
More for vehicle owners
Collection & delivery

Ready to send your unit?

Pack your module using our guide and send it with tracking. We confirm receipt and keep you updated until it is back with you.

Specialist repair of automotive electronic modules for garages and drivers across the UK.

Customer feedback on GoogleRead them →
FAQs

Questions before you send a module.

How do I send my module for repair?

Find your repair by part number, fault code or vehicle, place the order or send a repair request, pack the module using our packing instructions and post it with tracking or book our courier collection. Every job gets a TTR number.

Do you repair the original unit or exchange it?

We repair your original unit and send the same unit back. In most cases it keeps its coding, software and vehicle data, so it goes back into the car without dealer programming.

What happens if my module cannot be repaired?

You pay only the bench test fee shown on the repair page and the unit is returned to you. If more work is needed than the repair you ordered, we quote it first and only continue with your approval.

How do I know the module is really faulty?

Fault codes point to a system, not always to a failed part. Check wiring, fuses and supply first. If the cause is still unclear, order a bench diagnostic and we confirm the fault before you pay for a repair or a new part.

Is every repaired unit tested?

Each unit is checked before and after repair using the tests available for that module type. The report states the result (pass, partial or fail), what was tested and what could not be tested on the bench.

Do I need to code or calibrate the module after fitting?

An original unit normally needs no coding. Some systems need a basic setting or calibration in the vehicle after refitting; where this applies, it is stated on the product page and in the report.

How long does a repair take and how do I follow it?

Turnaround depends on the module and the fault found. Use your order or TTR reference to request an update by email or WhatsApp. We confirm progress and dispatch tracking directly.

Do you add VAT and who pays for return delivery?

No VAT is added to our prices. Tracked return delivery within the UK is included in the repair price. Courier collection of your unit is available as an option.