ECU / DME / DDE / PCM
Engine control module repairs, programming, coding and cloning for petrol and diesel controllers across major European brands.
✓ Advanced Electronics Lab/Workshop
Precision repair for modern vehicle electronics
Specializing in Auto-Tronics & Mecha-Tronics services:- ECU, Auto transmissions, DSG mechatronics, VGS, CVT, smart keys, advanced diagnostics, module repairs, programming, coding, adaptation & cloning. We also support mobile/remote service across Gauteng.
What we do best!
Specialization
Focused on auto electronic module repairs, coding, adaptation and programming for European and popular brands — bench work and vehicle-side support.
Auto Transmission / Mechatronics
Transmission control and mechatronic unit repair, programming and coding for DSG, CVT, VGS, and related systems.
Smart key systems
Key repair, programming, adaptation and coding for modern immobiliser, comfort access and remote systems.
Advanced diagnostics
Structured troubleshooting for complex electrical and electronic faults — guided diagnosis beyond basic DTC code reading.
Remote / mobile support
On-site and remote assistance for selected services. Call-out fee applies depending on location and job type.
Module coding & programming
OEM-style coding, online & offline programming, and parameter adaptation after module replacement or repair.
Immobiliser & security
Immobiliser repair, synchronisation and security module work for modern vehicle access and anti-theft systems.
Bench repair & testing
Off-vehicle bench testing and repair of electronic control units under controlled conditions with proper power and tooling.
Adaptation & calibration
Component/module adaptation, basic settings and calibration procedures after repairs, replacements or coding work.
How it works
Clear process map to follow, no guesswork
From first message to completed job — structured steps so you always know what happens next.
1
Contact us
WhatsApp or call us with your vehicle details and fault description to book your appointment instantly.
2
Diagnostics
We evaluate modules or vehicles either on the bench or on-site to confirm the repair plan before starting any work.
3
Repair & coding
We deliver professional repair, programming, and coding services using advanced equipment and fully documented processes.
4
Job handover
Job completed with documentation. Collect from the workshop or arrange return delivery.
Brands
Supported vehicles
Strong focus on European electronics with support for selected volume brands.
- BMW
- Mercedes-Benz
- Volkswagen
- Audi
- MINI
- + more on request
Gallery
Our specialization!
ECU coding, key programming, transmission electronics, in-car and bench advance diagnostics
Reviews
What customers say
Feedback from vehicle owners and referring workshops.
★★★★★
“I needed EGS (DQ200 MQB) coding and programming after an auto transmission replacement. I've received a professional and quick service. The car runs perfectly. I recommend for them for auto electronics and mechatronics work.”
★★★★★
“We needed DME coding after a replacement. The service was professional, quick and the car runs perfectly. We highly recommend them for electronic work.”
★★★★★
“We send complex electronic jobs here when our own skill set and tools cannot meet our requirements. They give us reliable results every time.”
Case studies
Real jobs, real results
Selected examples of electronic repairs and coding work — clear process, documented outcomes.
VW Golf 7 · DSG DQ200
VW Golf 7 DSG — EGS (DQ200) coding after replacement
Problem
Transmission control unit replaced; vehicle would not drive correctly without proper coding and basic settings.
Work done
Bench verification, online coding of the new mechatronic/EGS, basic settings and road-test verification.
Result
Correct gear engagement and normal driving behaviour restored. Documentation provided to the referring workshop.
BMW 3 Series
BMW 3 Series — DME coding after module replacement
Problem
Replacement DME required coding and adaptation to the vehicle before the engine would run correctly.
Work done
Module identification, coding to the vehicle, necessary adaptations and functional checks.
Result
Engine started and ran correctly. Customer left with a clear handover of the work performed.
European vehicle (workshop referral)
Complex electrical fault — beyond basic DTC reading
Problem
Intermittent electrical issue where basic code reading had not resolved the root cause.
Work done
Structured diagnostics, guided testing and targeted repair rather than parts swapping.
Result
Fault isolated and corrected. Referring workshop received notes for their records.
About us
Built for electronic complexity
Based in Nellmapius, Pretoria (Gauteng), Karotech Diagnostics specialises in automotive electronics — the control systems that run engines, gearboxes and vehicle security. Whether you need a bench repair, coding after module replacement, or advanced diagnostics when others stop at fault codes, we focus on clear communication, structured process and reliable results.
Ask us about your vehicleCore specialization
Dedicated Auto-Tronics and Mecha-Tronics capability — not a general “fitment only” or parts-swapping workshop.
Transparent process
Bookings, job tracking and invoicing through our digital workshop system so you always know where things stand.
Reachable support
WhatsApp and phone lines for appointments, quotes, status updates and mobile call-outs — we answer and we follow through.
FAQ
Common questions
Quick answers before you get in touch.
Do you only work on European cars?
We specialise in European brands (BMW, Mercedes-Benz, VW, Audi and others) but also support popular volume brands such as Ford and Toyota. If you are unsure, send the vehicle details on WhatsApp and we will confirm.
Can you repair modules on the bench?
Yes. Many ECU, mechatronic and related units can be tested and repaired off the vehicle. Bring the module or arrange collection — we will advise the best path after initial assessment.
Do you offer mobile or on-site support?
Selected diagnostics, coding and programming jobs can be done on-site. A call-out fee applies depending on location and the nature of the work. Contact us with details for a clear quote.
What information should I send for a quote?
Vehicle make, model, year, engine or gearbox type if known, and a short description of the fault (including any fault codes). Photos of the module or dash warning lights help. We reply with next steps.
How long does a typical job take?
It depends on the fault and parts availability. Many coding and adaptation jobs are same-day or next-day. Complex bench repairs may take longer — we give realistic timelines once we have assessed the unit or vehicle.
Contact Us!
Secure an appointment.
Send vehicle details and the fault — we reply with practical guidance and options.
What to send for a fast reply
- Vehicle make, model and year
- Vehicle Identification number
- Engine or Transmission type if known
- Fault description and any fault codes
- Photos of the module, dash warnings or paperwork (helpful)
We will reply with your custom assessment path, options, and expected timing. Once WhatsApp opens, please attach the necessary information.
Reach us directly
WhatsApp / Phone
0690695645
Email
sales@karotech.co.za
Opening hours
- Monday 09:00 – 17:00
- Tuesday 09:00 – 17:00
- Wednesday 09:00 – 17:00
- Thursday Closed
- Friday 09:00 – 17:00
- Saturday 09:00 – 12:00
- Sunday Closed