Dallas, TX · Worldwide mail-in ECU repair
ECU repair.
Relentless
attention.
High-quality components. Detailed circuit-board work. Repair focused on dependable operation. Give your ECU, ECM or instrument cluster the specialist attention it deserves.
supported applicationsPORSCHETOYOTALEXUSFerrariBMWAUDI
What we do
ECU & module repair.
Clear solutions.
ECU faults, failing displays and damaged circuit boards deserve a repair plan built around the actual problem. Find your service and send us your module details.
ECU & capacitor repair
ECU and ECM repair for supported Toyota, Lexus and other applications, including capacitors, solder pads and damaged circuit-board pathways.
Board-level repairInstrument clusters
Blank displays, intermittent gauges and cluster electronics. Assessment for supported instruments and modules.
Displays & gaugesToyota & Lexus hard-shift
Our specialist ECU repair for supported Lexus hard-shift faults. Exact application and diagnosis confirmed first.
Specialist ECU repairPorsche electronics
DME and instrument electronics for supported Porsche applications, including vintage and early-2000s vehicles.
Preserve the originalFerrari electronics
Careful assessment of supported Ferrari instrument clusters and older DMEs. Every unit is confirmed individually.
Selected applicationsVehicle feature coding
Compatible convenience features and display settings for Porsche, BMW, Audi and Lamborghini. Vehicle present.
In-person appointmentsCoverage varies by module and application. Send your vehicle details and part number before shipping.
make the
difference.
Quality where it counts
Small components.
A serious
commitment.
Your ECU is too important for guesswork. We use high-quality replacement components and careful board-level workmanship, with lasting reliability as the goal. Our documented repairs include damaged solder pads and reconstructed copper traces—the details that a replacement component alone cannot fix.
- High-quality components selected for the repair
- Attention to solder pads, copper traces and surrounding damage
- Individual assessment from an experienced automotive electronics workshop
Choose your repair with confidence
Look beyond
the listing price.
Before choosing any repair service, ask what happens to your actual board. Clear answers, documented work and written repair terms make the difference easier to see.
Quality inside.
High-quality replacement components are part of our repair approach. Tell us about earlier repairs so we can assess the board’s current condition.
Work you can see.
Explore our real Supra ECU solder-pad and trace repairs. See the detail behind the service before you ship your module.
View actual repairs ↗Experience behind it.
Founded by Josh Beaumont, Relentless draws on more than 20 years in the automotive world, including 11 years in automotive technology and electronics.
Meet Relentless ↗From your garage to our bench
A straightforward process.
Tell us about it.
Share your vehicle, module part number, symptoms and diagnostic findings. A clear label photo helps.
Confirm the plan.
We review compatibility and explain the assessment, quotation and shipping arrangements.
Send it with confidence.
Once confirmed, pack your module securely and include your contact information and repair details.
We drive what we build
The passion is personal.
“Fixed the harsh downshift issue on my LS430. Car runs much smoother now.”
Philemon MesfunLexus LS430 owner
Customer testimonial
Before you send it
A few answers
up front.
Not sure where to start? Give us the details. We’ll help you work out whether your module is a fit.
Can I mail in my module?
Yes, for supported applications. Send your vehicle details, module part number and symptoms first. We will confirm support and shipping arrangements before you send anything.
Does a fault code mean my ECU has failed?
No. A code identifies a reported problem, not necessarily a failed module. Power, grounds, wiring and other vehicle systems can cause similar symptoms. Include the diagnostic checks already performed.
How much does a repair cost?
Most repairs are quoted individually based on the application, condition and work required. The specialist Toyota/Lexus hard-shift ECU service is published at $800 USD plus shipping. Confirm the exact service and any diagnostic fee with our team.
Can feature coding be done by mail?
No. Our feature coding service requires the vehicle in person. Contact us with your year, model and requested changes so compatibility and an appointment can be arranged.