Specialist · ECU coding & diagnostics
ECU Coding & Advanced Diagnostics.
Module-level work that most local garages send to the main dealer. We clone, program and repair ECUs in-house, code retrofits and replacements to your VIN, and run engine diagnostics that read what the warning light won't tell you.
What's covered
8 services
01 / 08
ECU cloning
Mirror an existing ECU into a replacement unit, immobiliser data and all.
02 / 08
ECU programming
Flash, code and adapt control modules to your vehicle's VIN.
03 / 08
ECU repair
Component-level board repair when a clone or replacement isn't viable.
04 / 08
VAG coding
Long-coding, retrofits and module pairing for VW, Audi, SEAT, Škoda and Cupra.
05 / 08
BMW coding
FA / I-step coding, CAS programming, retrofit enablement.
06 / 08
Mercedes coding
SCN coding, variant coding and Xentry / Vediamo work.
07 / 08
Land Rover coding
JLR Pathfinder / SDD coding, module replacement and retrofit work.
08 / 08
Engine diagnostics
Fault-code reading, live-data analysis and root-cause investigation.
Frequently asked
Common questions, plain answers.
01What's the difference between cloning and programming an ECU?
Cloning copies an existing ECU's data — including the immobiliser link — into a replacement unit, so the car sees the new ECU as the original. Programming flashes a fresh ECU and codes it to your VIN, which usually means re-pairing keys and immobiliser. Cloning is faster and avoids key issues; programming is the only option when you can't read the original ECU.
02Do I need to take the car to the main dealer for coding work?
Not for the work we cover. We use manufacturer-grade tools (Autel, Pathfinder, Vediamo) for VAG, BMW, Mercedes and Land Rover. The dealer route is usually more expensive and slower; the result is the same.
03Can you diagnose an intermittent fault that only happens occasionally?
Often, yes. We log live-data over a road test and store freeze-frame data, which lets us catch faults that aren't active when the car is on the diagnostic ramp. Some intermittent faults need the car to be left with us for a longer period — we'll tell you upfront if that's the case.
04How much does a diagnostic cost?
Most diagnostics start with a fixed-fee scan and interpretation. If the fix is straightforward, we'll often roll the diagnostic fee into the repair. We give a written quote before any work starts.
Also at Proline
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Software and hardware solutions for diesel emissions systems — DPF blockages, EGR faults, AdBlue countdowns.
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SRS / airbag module crash data reset on 99% of modules — without replacing the unit.
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Transmission & gearbox
Gearbox & DSG cloning, transmission repair and replacement — manuals, autos, DCT and DSG.
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Ready to book ecu coding & diagnostics?
Send us your reg and we'll come back with a written quote. No obligation, no pressure — just a clear price before any work starts.