Fix “No warning tones” and no sound in your BMW
Lost all audio? Seeing “No warning tones” on the display? A failed Harman Kardon amplifier is a common cause. We repair your original BMW amplifier, helping you avoid the cost of replacement.
Automotive electronics specialists
Find the repair. Send the unit. We fix it.
Specialist repair and remanufacture of automotive electronics. Find the right service by vehicle, part number or fault code.
Find your repair
What are you trying to repair?
Not sure which service you need?
Start a repair request
Collection & deliveryDPD collection or drop-off
Fast turnaround1–2 working days
Lifetime warrantyOn most repairs
Trusted by garagesAnd vehicle owners across the UK
Why Remanx
Specialist repairs. Without replacing the complete unit.
We repair and remanufacture automotive electronic control units for cars, vans and commercial vehicles. Using specialist testing and component-level repair, we retain the original unit wherever practical and focus on reliable long-term results.
Specialist diagnostics
Fault-led testing focused on automotive electronic control units and known failure patterns.
Component-level repair
Failed electronics are repaired rather than replacing the complete unit wherever practical.
Final test & verification
Repaired functions are checked before the unit is cleared for return.
Fast workshop turnaround
We target completion within 1–2 working days for most repairs.
Lifetime warranty on most repairs
Lifetime warranty is available on most qualifying repairs, subject to the service terms shown for the product.
No fix, no repair fee
If the fault cannot be repaired, there is no repair charge; return shipping still applies.
Common repairs
The units we repair every day.
From ABS pumps and instrument clusters to engine ECUs and transmission electronics, we repair a wide range of automotive electronic units.
How it works
A simple process. From fault to fixed.
Send your unit to us, we’ll diagnose and repair it, then return it with a clear route from start to finish.
More about our process-
Send your unit
Book a collection, drop it off or send it directly to our workshop.
Collection · drop-off · post -
We repair it
Fault-led testing and component-level repair by our workshop team.
Test · repair · verify -
Get it back
Your repaired unit is checked, cleared for return and sent back using your chosen delivery method.
Tracked return · warranty-backed
Get started
Choose the right route for your unit.
Repair your original unit, choose an exchange where available, or send us the details if you’re unsure which service you need.
Repair my original unit
Send us your original unit for repair. Often the most cost-effective route when the unit can be retained.
For garages & vehicle owners
Built for garages. Simple for vehicle owners.
Whether you’re running a busy workshop or repairing your own vehicle, we keep the route clear from identification to return.
Garage support
Built around busy garage workflows
Use Remanx as the electronics repair bench behind your workshop.
- Fast, reliable turnaround on most repairs
- Collection & delivery options
- Trade-friendly support and account options
Vehicle owner route
A clear route for vehicle owners
Find the matching repair, send your original unit and follow the same specialist workshop process.
- Simple online booking
- DPD collection or drop-off
- Lifetime warranty on most repairs
Collection & delivery
Ready to send your unit?
Book a DPD collection from your home or workshop, or send the securely packed unit directly to us.
Trusted by garages and vehicle owners
Specialist automotive electronics repair and remanufacture for garages and vehicle owners across the UK.
Specialist repairs across
ABS & ESPEngine ECUsInstrument clustersTCMBCM & body electronicsSteering electronics