11/11/2016
In the intricate world of modern vehicles, the Engine Control Unit (ECU), often affectionately known as the 'computer box', stands as the undeniable brain of your car. This highly sophisticated electronic component orchestrates a myriad of critical functions, from precisely managing fuel injection and ignition timing for optimal engine performance and fuel efficiency to controlling emissions and even integrating with your vehicle's advanced security systems. When this vital component falters, it can trigger a perplexing array of symptoms, ranging from an illuminated 'check engine' light that refuses to disappear to erratic driving behaviour, or even the devastating scenario of a completely dead vehicle.

Understanding the profound complexity and crucial importance of these electronic systems, we are proud to offer a dedicated and highly specialised mobile service right across Gauteng and extending well beyond. We bring our expert diagnostic and repair solutions directly to your doorstep, be it your home, workplace, or any location of your convenience. Gone are the days of inconvenient garage visits and costly towing; our fully equipped mobile workshops ensure that your vehicle's electronic heart is meticulously diagnosed, repaired, and restored to perfect working order, minimising disruption to your busy schedule.
The Crucial Role of Your Vehicle's ECU and Electronic Modules
Your vehicle’s performance, safety, and reliability are inextricably linked to the flawless operation of its electronic control units. Beyond the main engine ECU, modern cars are equipped with numerous other 'computer boxes' that manage specific systems: from Anti-lock Braking System (ABS) modules and Traction Control Units (TCU) to Transmission Control Modules (TCM) and even power steering units. Each module plays a vital role, communicating seamlessly to ensure your car functions as a cohesive unit. When any of these modules develop a fault, the consequences can range from minor inconveniences to significant safety hazards or even render your vehicle inoperable.
Common symptoms of electronic module failure include persistent warning lights on your dashboard, erratic engine behaviour, gear shifting problems, loss of power steering, or issues with your braking system. Identifying the root cause of these complex electronic faults requires not just generic diagnostic tools, but deep technical knowledge and advanced equipment, which our master technicians possess in abundance.
Comprehensive ECU & Electronic Module Services
Our expertise extends far beyond just the engine ECU. We offer a holistic range of services for virtually all electronic control units within your vehicle, employing state-of-the-art diagnostics to pinpoint issues with unparalleled accuracy. Our goal is always to repair and remanufacture your existing unit where possible, offering a more cost-effective and environmentally friendly solution than outright replacement.
ECU Testing, Repair & Remanufacturing
We provide comprehensive testing and repair services for a vast array of ECUs, ensuring they meet or exceed original manufacturer specifications. Our remanufacturing process involves replacing faulty components with higher-quality parts than those originally used, effectively eliminating inherent design flaws and enhancing durability. All our remanufactured units come with an industry-leading lifetime warranty, giving you complete peace of mind.
- Engine Management ECUs: Diagnosis and repair of issues affecting engine performance, fuel economy, and emissions.
- Injection & Diesel ECUs: Specialised services for complex fuel injection systems in both petrol and diesel engines.
- Electric Power Steering (EPS) ECUs: Addressing faults that cause loss of power steering or erratic steering behaviour.
- ABS ECUs & Modules: Critical repairs for anti-lock braking systems to restore braking safety and stability.
- Gearbox ECUs (TCMs): Solutions for automatic and manual transmission control units that can cause shifting problems or complete loss of drive.
ABS Pump & Module Repairs
The Anti-lock Braking System (ABS) is a critical safety feature. Faults in the ABS pump or module can compromise your braking ability and often illuminate warning lights such as ABS, DSC, or ESP. We specialise in repairing these units for a wide range of vehicles, addressing common issues like hydraulic pump motor failures or communication errors. Below is a table highlighting some common ABS pump module faults we regularly encounter:
| Module Type | Common Vehicles Affected | Typical Symptoms / Fault Codes |
|---|---|---|
| ATE ABS Pumps & Modules | Volvo, VW, Audi, Seat, Skoda, Ford, Mercedes, Renault (e.g., MK20, MK60, MK70, MK25, Mk50 series) | ABS, DSC, handbrake warning lights illuminated. Common fault codes like 5DF0 & 5DF1 (hydraulic pump motor fault) for BMW (3-Series, Z4, 1-Series, 2005-2014). |
| Bosch ABS Pumps & Modules | Most makes of vehicle (e.g., Bosch 5.3, 5.7, 5.0, 5.5, 8.0) | Non-communication faults, persistent ABS warning light. |
| Wabco ABS Pumps & Modules | Land Rovers (e.g., Common part No. SRB10241) | ABS light on, shuttle valve fault codes. |
| Audi A3 ABS Pump Module | Audi A3 (built after 2004) | Specific part numbers like 1K0614517H / 1K0907379K often indicate issues. |
| VW Golf / Touran ABS Pump Module | VW Golf / Touran | ESP light on with fault code “01435 Brake Pressure Sensor 1 (G201)”. This is a very common ESP light problem across VW, Audi, Seat, and Skoda vehicles. |
| Ford Focus & C-Max ABS Pump | Ford Focus & C-Max | ESP light on dashboard, fault code “C1288 Pressure Transducer Main/Primary Circuit Failure”. |
| Mercedes Sprinter ABS Pump | Mercedes Sprinter | ABS lights illuminate with fault code “C1401 - RETURN PUMP FAULT”. |
Throttle Body Repairs
The throttle body regulates the amount of air entering your engine. When it malfunctions, it can lead to rough idling, stalling, power loss, or difficulty starting the engine. We offer comprehensive repair and replacement services for various throttle bodies, including those found in BMW M3/M5, Audi/VW/Seat/Skoda (VAG), Mitsubishi/Volvo GDI engines, Nissan Micra (K11), and older Volvo Magneti Marelli units. Common fault codes for BMW M5/M3 include ‘2B15 – Throttle valve actuator bank 1’ & ‘2B16 – Throttle valve actuator bank 2’, leading to 'limp-mode' activation.
Instrument Cluster (Dashboard) Repairs
Your instrument cluster provides crucial information about your vehicle's status. Faulty dashboards can display incorrect readings, flicker, or fail completely. We are specialist suppliers and repairers of automotive instrument clusters for a wide range of manufacturers, including Alfa Romeo, Audi, BMW, Citroen, Ford, Honda, Mercedes, Nissan, Peugeot, Toyota, Vauxhall, Volkswagen, and Volvo, among many others. We can test, rebuild, and supply units to restore full functionality.
Electric Power Steering (EPS) Repairs
Modern vehicles often utilise electric power steering systems, which rely on electronic control modules and motors. Problems with these systems can result in heavy steering, intermittent power assistance, or complete loss of power steering. Our technicians are skilled in testing, rebuilding, and supplying electric power steering columns and pumps for popular makes such as Audi, BMW, Fiat, Mini, Peugeot, Renault, Toyota, Vauxhall, and Volkswagen.
Gearbox ECU Repairs
Automatic and manual gearboxes are increasingly reliant on sophisticated electronic control units. Faults in these Transmission Control Modules (TCMs) can lead to harsh gear changes, slipping gears, 'limp mode' activation, or total loss of drive. We offer specialised repairs for common gearbox ECU issues, including:
- Mercedes 7G-Tronic TCM: Common failure causing juddering, holding gears, or forced gear changes, often with fault codes for turbine speed sensors.
- VAG DSG 7 Gearbox Control Unit (DQ200): Frequent failure in VW Audi Group vehicles (2003-2016), leading to complete loss of drive and inability to select gears, with EPC light and flashing gear symbols.
- Vauxhall Easytronic/Tiptronic Clutch Actuator: Causes 'F' light on the dash and engine failure to start.
- Audi A4/A6 Multitronic Transmission Gearbox ECU: Very common failure causing 'PRNDS' light flashing, fail-safe mode, and potential complete forward drive failure.
- Mercedes A-Class Automatic Gearbox ECU & GRM (Gear Recognition Module): Common problems leading to 'F' light on the dash, jerky gear changes, and gears 'banging' into place.
- Toyota Rav4 Engine/Gearbox ECU: Common problem for models after 2000, presenting as slipping gears followed by forceful engagement.
Diesel Pump EDC Repairs (Bosch VP44)
The Bosch VP44 diesel pump, particularly its Electronic Diesel Control unit (EDC), is a notorious point of failure that often leads to a complete non-start condition for diesel engines. While the mechanical side of the pump is generally robust, the electronic control unit attached to the top is frequently the culprit. We specialise in testing and repairing the EDC unit of these pumps, providing a lifetime warranty on our rebuilt units or supplying direct replacements from stock.

Common failure symptoms include a non-start condition. Common fault codes associated with Bosch VP44 EDC failures are: VAG (00550, 00628, 01268, 01318) and Vauxhall/Opel (P0190, P1220, P1335, P1560, P1600, P1630, P1631, P1660). We cover a wide range of vehicles fitted with these pumps, including Audi A4/A6/A8 2.5 TDI V6, BMW (E46) 320D / (E39) 520D, Ford Fiesta/Focus/Transit/Mondeo, Nissan Almera/Patrol/Terrano, Saab 9-3/9-5, Skoda Superb 2.5 TDI V6, Suzuki Grand Vitara 2.0D, Vauxhall Astra/Combo/Corsa/Frontera/Meriva/Omega/Signum/Vectra/Zafira, and VW Passat 2.5 TDI V6.
Our Mobile Workshop: Convenience & Expertise
Our commitment is to provide unparalleled convenience without compromising on the quality of service. Our mobile workshops are fully equipped with the latest diagnostic tools and a comprehensive array of equipment, allowing our fully skilled vehicle and generator master technicians to perform complex repairs and servicing on site. We understand that your time is precious, which is why we bring the workshop to you – whether it's your home, workplace, or even if you're stranded. This minimises inconvenience and gets you back on the road faster.
Beyond electronic module repairs, our extensive mobile service capabilities include a wide range of general automotive and generator maintenance and repair tasks. We can start dead cars and generators affordably, perform minor and major services, conduct oil and filter replacements, and replace components such as alternators, starters, radiators, AC compressors, clutch kits, brakes, suspension parts, and fuel pumps. We also specialise in exhaust repairs, engine overhauls, reconditioning, and full engine replacements, as well as automatic and manual gearbox repairs. For those unexpected emergencies, we offer key replacement locksmith services on the spot, including spare key provision and key programming. We can even open locked vehicle doors or trunks if you've lost your keys or have a flat battery.
With years of industry experience, we honestly believe you will not get a better service anywhere. All our work adheres to the highest standards, and our labour is fully guaranteed. We fix all problems and faults, whether your vehicle has a diesel, petrol, or electric engine. We pride ourselves on running proper fault findings to accurately detect the main trouble causer, ensuring a permanent solution rather than a temporary fix. From stopping oil, fuel, transmission fluid, or coolant leaks to fixing smoking exhausts and high-pressure pump repairs, we are your comprehensive mobile automotive solution.
Pricing for ECU & Electronic Diagnostics
We believe in transparent and competitive pricing for our specialised services. Below are our standard rates (trade prices shown are exclusive of VAT):
- ECU Testing: From R380
- ECU Repair: From R700
- Replacement & Remanufactured ECUs: From R3500
We stock thousands of ECUs from leading brands including Bosch, Siemens, BMW, Ford, Lucas, Magneti Marelli, Motorola, and Delphi. If you're struggling with immobiliser issues, we can often supply 'free running' ECUs for most models, bypassing troublesome immobiliser faults. Our aim is to provide an affordable, reliable, and convenient service that gets your vehicle back to optimal condition.
Frequently Asked Questions (FAQs)
Do you repair car ECU or computer box?
Absolutely, yes! We specialise in the diagnosis, repair, and remanufacturing of car ECUs and all types of electronic 'computer boxes' within your vehicle. From engine management units to ABS modules and gearbox ECUs, our expert mobile technicians are equipped with advanced diagnostic tools and the necessary expertise to resolve even the most complex electronic faults, right at your location.
What kind of service do you need for a computer box?
When you have a computer box issue, you typically need a comprehensive service that includes professional diagnosis, precise fault finding, and expert repair or remanufacturing. Our service encompasses all these aspects. We conduct thorough ECU testing to identify the exact fault, perform component-level repairs where feasible, and can also provide remanufactured or replacement units. We cover a wide array of electronic modules, ensuring all your vehicle's 'brains' are functioning correctly.
How much does a computer box test cost?
Our ECU testing service starts from R380. If a repair is needed, ECU repairs begin from R700. For cases where a unit is beyond repair or a direct replacement is preferred, new or remanufactured ECUs are available from R3500. Please note that these trade prices are exclusive of VAT. We provide a transparent breakdown of costs before any work commences, ensuring there are no hidden surprises.
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