Agricultural machinery & tractors
Software calibration, diagnostics and control-unit service for tractors and agricultural machinery.
MG AutoTech services
The right service for your vehicle.
Start with your goal, a warning message or the affected system. Each service explains the assessment, its limits and the next step — from chiptuning to ECU and emissions diagnostics.
60-second check
What is happening with your vehicle?
Select the most noticeable symptom. You will see suitable next steps and can prepare a technical assessment with the right topic already selected.
This check does not replace diagnosis or confirm a faulty component, compatibility or price.01Mercedes will not start or the ignition stays off
The key turns without effect in your Mercedes, the instrument cluster stays dark or the steering lock will not release.
Show suitable next steps02AdBlue warning or remaining range on the displayTopping up does not help, the message returns or a warning indicates that the engine will be prevented from starting.
Show suitable next steps03DPF warning or regeneration is not workingParticulate-filter warning, high loading, loss of power or recurring regeneration problems.
Show suitable next steps04Transmission in limp mode or unusual gear changesHave jerking, harsh shifts, delayed response or a transmission warning assessed first.
Show suitable next steps05Engine ECU does not respond, is faulty or has been replacedClarify loss of communication, repair, a replacement unit, data transfer, programming or cloning requirements.
Show suitable next steps06BMW app displays “Unlock required”MHD, MG Flasher or bootmod3 requires an unlock; have the ECU and software version checked in advance.
Show suitable next steps07Engine warning light returns after clearingA warning light, fault code or limp mode returns; investigate the cause, not just the stored entry.
Show suitable next steps08Coolant temperature is 105–110 °CDistinguish the target temperature, mechanical faults and suitability for thermostat software optimisation.
Show suitable next steps09You want more power and better throttle responseHave Stage 1 assessed against the vehicle's condition, engine, ECU and intended use.
Show suitable next steps10Mercedes OM642 is leaking oil or smells of engine oilAssess oil in the inner engine V, visible traces at the rear of the engine or a falling oil level before the complete oil-cooler replacement.
Show suitable next steps11Mercedes displays an SBC or brake warningAssess the warning text, fault code and braking behaviour with safety in mind; a reset is not automatically a repair.
Show suitable next steps12Key lost or not recognisedAssess a lost key, remote/keyless fault or missing start authorisation in the right context.
Show suitable next stepsYour selection
Suitable next steps.
Your selection from the service check has been carried over. Read the relevant service page or prepare your vehicle details and symptoms for an initial assessment.
- Problem
- Engine warning light returns after clearing
Specialist areas
Organised by task and system.
Choose the area that fits your vehicle, goal or symptoms. Each detail page explains what is needed and how your enquiry proceeds.
01
Performance tuning
Software and function tuning for considered power gains, improved response and coordinated transmission strategies.
6 services- Stage 1 chiptuningMG AutoTech optimises engine software for each vehicle, taking account of condition, control unit, transmission limits and everyday usability.View service
- Coolant temperature / thermostat softwareOn technically suitable vehicles, MG AutoTech optimises electronic thermostat control for the specific vehicle and engine. The aim is an appropriate thermal operating range — not the lowest possible temperature at any cost.
- Check target/actual values
- Thermostat maps
- Not Stage 1
- TCU transmission tuningTCU tuning can improve shift logic, torque strategy and drivability, but it must suit the condition of the transmission.View service
- Performance engineeringOn high-performance production platforms, the file alone is not decisive: the whole system must be calibrated together. Engine ECU, transmission ECU, existing hardware, fuel and thermal reserves all belong in the same assessment.View service
- Supercar chiptuningSupercars are not treated as an exception here, but according to the same principle as any vehicle: control unit, software version, hardware and condition determine feasibility — only the requirements and consequences of an error are higher.View service
- Bespoke calibration for high-performance projectsOnce a vehicle moves beyond standard — a larger forced-induction system, a changed fuel system, modified mechanical components — there is no ready-made file that fits. What matters then is calibration built around the actual setup and its measurements.View service
02
Mechanical engine work
Selected mechanical workshop work with vehicle-specific parts planning, a clean dismantling process and a traceable final inspection.
1 services03
Exhaust aftertreatment & fault diagnosis
Diagnostics for AdBlue, SCR, DPF, EGR, NOx, the engine warning light and recurring fault codes.
8 services- AdBlue system diagnosticsTopping up alone will not help if pressure build-up, heating, lines, the dosing module, fluid quality or sensor readings are implausible.View service
- SCR system diagnosticsAn SCR fault proves neither a faulty catalyst nor a faulty NOx sensor. Dosing, temperature, the exhaust path and the measurement chain must work together.View service
- DPF diagnostics & regenerationIf a DPF warning leads to a quote for the complete filter, have measurements taken first. In a substantial number of cases, the cause is not the filter but the differential-pressure sensor, a blocked pressure line or a driving pattern that prevents regeneration.View service
- EGR diagnosticsEGR faults do not automatically mean that only the EGR valve is defective. Air mass, boost pressure, actuator, cooler and wiring are part of the diagnosis.View service
- NOx sensor diagnosticsA NOx code may concern the sensor, but also its power supply, heater, data communication, wiring, an exhaust leak or the wider SCR system.View service
- Engine warning light diagnosticsThe engine warning light can be triggered by AdBlue, DPF, EGR, ignition, boost pressure, sensors or many other systems.View service
- DTC fault-code analysisDTC analysis does not mean blindly suppressing warning systems. The aim is a clear assessment of the code, the conditions that trigger it and its cause.View service
- Vehicle diagnosticsWhen the cause is unclear, a structured assessment across several control units is more useful than isolated guesses.View service
04
Control units
ECU unlocking, cloning, programming and control-unit services with data backup, identification and a structured process.
7 services- BMW ECU UnlockThe standard price for an approved BMW ECU Unlock is €150 per control unit including removal and refitting; with an appointment and a successful initial assessment, we carry out the standard scope on the same working day. S68 is excluded: €500 per ECU or €899 for both control units, with no blanket same-day commitment. Stage 1 remains separate.View service
- ECU cloningECU cloning transfers the vehicle-relevant data from the original control unit to a technically compatible replacement — provided the original data, hardware and software version allow it.View service
- ECU repairStarting problems, misfires, no communication or faults after water or voltage exposure can point towards the engine ECU. We first distinguish an ECU fault from problems elsewhere in the vehicle or in the data — then decide on repair, cloning or replacement.View service
- Engine control-unit programmingECU programming can restore original software, check software versions or prepare a replacement control unit.View service
- Immo OFFIf the key is not recognised, start authorisation is missing or the vehicle will not start after a control unit replacement, we identify the cause and recommend the appropriate route: repair, adaptation, coding, ECU cloning or — only in an authorised, suitable individual case — Immo OFF.View service
- Control-unit servicesWhen a module fails, several control units report communication faults or a replacement module needs preparing, we identify the component, its place in the vehicle network and the appropriate specialist approach.View service
- Hybrid and electric vehicle diagnosticsHybrids and electric vehicles are more electronically complex, not inaccessible. Control units, fault memory, coding and — for plug-in hybrids — combustion-engine software are assessed for the individual vehicle, just as with any other powertrain.View service
05
Coding & retrofits
Vehicle coding, BMW coding, CarPlay retrofits and specialist Mercedes ELV/ESL and SBC work.
5 services- Vehicle codingCoding changes vehicle configurations. MG AutoTech checks which functions are compatible with the equipment, software and safety requirements.View service
- BMW codingBMW coding depends heavily on the model series, software version, Vehicle Order, equipment and control unit.View service
- CarPlay retrofitDepending on the vehicle, CarPlay can be activated in the original system or may require a retrofit module. The head unit, software and equipment are the deciding factors.View service
- Mercedes ELV / ESLYour Mercedes unlocks, but the ignition stays off, the instrument cluster and warning lights remain dark, the starter does not respond or the steering lock does not react? We distinguish faults in the key, EZS/EIS, ELV/ESL, electrical system and starter. For a diagnostically confirmed electronic ELV fault, our vehicle-specific emulator solution is designed for long-term operation.
- Mercedes will not start
- Ignition and instrument cluster stay off
- Steering lock will not release
- ELV/ESL assessment
- Mail-in service throughout Germany
- Full service in Stuttgart
- Mercedes SBC counter resetMG AutoTech exclusively performs the Mercedes SBC counter reset on the vehicle in Stuttgart: fixed €50, appointment by WhatsApp only. We do not offer mechanical SBC repairs.View service
Applications
Technology must match the operating profile.
A tractor, motorhome, truck and construction machine each place different demands on their systems. Choose the relevant starting point and get a technical pre-check instead of a blanket promise.
Motorhomes & campers
Tuning, diagnostics and ECU service for motorhomes, matched to weight, travel use and base vehicle.
Trucks & commercial vehicles
Software calibration, diagnostics and control-unit service for trucks, vans and commercial vehicles.
Construction & working machinery
Software calibration, diagnostics and ECU service for excavators, loaders, dozers, dumpers, cranes and working machines.
How we work
Assess first, then carry out the work.
Our main services follow the same professional process: vehicle data, fault memory, measured values, software version, feasibility and clear approval.
Clarify the enquiry
We review the vehicle details, symptoms and objective in advance to avoid recommending an unsuitable service.
Document the diagnosis
Readout, fault memory, control-unit condition and the surrounding systems are documented.
Approve the approach
Repair, programming, coding or optimisation only starts after the technical assessment.
Check the result
Final checks, guidance and next steps are clearly handed over to the customer.
Enquiry
Send your vehicle details and have the right service assessed.
The more precisely you describe the vehicle, symptoms and goal, the sooner we can assess the next technical step.
Directly via WhatsApp
+49 151 51561670
[email protected]
Böckinger Str. 32, 70437 Stuttgart