UK postal module repairs · Please confirm your part number before sending. Start a repair request
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Monday–Friday08:30–17:30
Saturday09:00–14:00
SundayClosed

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Repair service by postGearbox control unit repair – T-Tronic Lab
Warranty on repair
Tested in-house
⏱ Turnaround confirmed on receipt
Gearbox & TCM

DSG7 DQ200 Mechatronic TCU Repair – 0AM 7-Speed (VW, Audi, Skoda, SEAT)

Repair from £349.00Assessment only — £45.00
Assessment fee deducted from an approved repair. Repair is not included in the assessment price.
Bench test & quote – deducted from repair
£45.00
No VAT added – we are not VAT registered
● Available to order
Choose your service REQUIRED
Unit & vehicle details
Not on our list for this repair – we will check it before any work starts.
Attached to your order, so we can match the unit when it arrives.
Current selectionBench test & quote – deducted from repair
£45.00
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Service overview

Professional repair, testing and return.

What you are buying: bench repair of the electronics (TCU) of your own DSG7 DQ200 0AM mechatronic unit – the 7-speed dry-clutch gearbox fitted to many VW, Audi, Skoda and SEAT cars. Your original unit is tested, repaired and returned, so its software and data stay with the car.

Typical symptoms

  • Gear indicator flashing, gearbox in emergency mode
  • No drive or no reverse, car will not move off
  • Gearbox warning together with the EPC light
  • No communication with the gearbox control unit
  • Main gearbox fuse blowing repeatedly

Fault codes seen on these units

P1604 / 005636 – Internal control module fault · P0562 / 16946 – System voltage low · U0101 – No communication with TCM · P173A–P173D – Gear selector position sensors 1–4 · P0841 – Transmission fluid pressure sensor. A fault code alone does not prove the TCU has failed: low battery voltage, a poor ground or connector, and hydraulic faults (accumulator, pump, valve body) can give similar codes. The bench test shows which part is at fault.

Cars and part numbers

DQ200 / 0AM is fitted to the VW Golf, Polo, Jetta, Passat, Touran and Caddy, Audi A1 and A3, Skoda Fabia, Octavia, Rapid and Superb, and SEAT Ibiza and Leon, among others. Mechatronic part numbers include 0AM927769D, 0AM927769E, 0AM927769G, 0AM927769H, 0AM927769K and 0AM325025D; some later units are labelled 0CW300044… The label on your unit decides – send us a photo first.

Check before you send it

  • Measure battery voltage and check the gearbox fuse, ground and connector.
  • Read and save all fault codes, with freeze frame, and include them with the order.
  • Remove the complete mechatronic unit (TCU with valve body) and send it whole. Do not separate the electronics yourself.
  • Drain the unit and seal it in a bag – gearbox oil in the parcel can damage the label and connector.

What happens on the bench

  1. Intake – photos, label, housing and connector condition, signs of previous repair.
  2. Test – power-up, communication and fault memory check; fault confirmed before any work.
  3. Repair – the confirmed electronic fault is repaired.
  4. Final test and report – the unit is checked again and you get a written report with the warranty seal number.

Price and payment

Bench test & quote £45 Deducted from the repair if you go ahead.
TCU electronics repair £349 Internal control module, voltage and communication faults confirmed on the bench.
Hydraulic / valve body faults Quoted Pressure, pump and accumulator faults – written quote after the test.

Every price includes the test, final check, report and tracked UK return. If the test shows a different repair level, we send a written quote and wait for your approval. If the unit cannot be repaired, you are refunded the price less the £45 bench test. No VAT added – we are not VAT registered. 12-month warranty.

After fitting

The DQ200 needs a basic setting / clutch adaptation with a suitable diagnostic tool after the mechatronic is refitted. Your garage can do this, or book it at our Mansfield workshop.

How to order

  1. Order and fill in the unit details – part number, VIN and fault codes.
  2. Post the unit using our packing instructions, or drop it at the lab in Rainworth by appointment.
  3. We test, repair and return it with the report – turnaround is confirmed when the unit arrives.

Common faults this service may resolve

  • Gear indicator flashing, gearbox in emergency mode
  • No drive or no reverse, car will not move off
  • Gearbox warning with EPC light
  • No communication with the gearbox control unit
  • Main gearbox fuse blowing

Related fault codes: P1604 005636 P0562 16946 U0101 P173A P173B P173C P173D P0841

VEHICLE FITMENT
Compatibility guide
Compatibility is confirmed by part number – include it in your request
SystemGearbox & TCM

Vehicle lists are identification guidance, not a fitment guarantee. Send the complete part number and hardware revision for confirmation before ordering. A similar-looking unit is not proof of compatibility.

Identification guidance

Part numbers

Identification guidance only – if your number is not listed, contact us before assuming the service is unsuitable.

0AM927769D0AM927769E0AM927769G0AM927769H0AM927769K0AM325025D0CW300044
A* means the last letter can vary (for example AA, AB, AC). Check the exact number on the label of your original unit and enter it when you order. Unsure? Send a photo on WhatsApp.
Find. Send. Fixed.

How the service works

Find your partCheck image, vehicle and part number.
Send your unitPost it or book a collection.
Initial testingWe inspect and confirm the fault.
RepairThe confirmed fault is repaired.
Final testingRetested before approval for return.
Back to youReturned with a test report.
Repair assurance

Warranty included

Service warrantyCovers the repair we carried out, for the period shown in our warranty terms.
Return for inspectionContact us before returning the unit – we guide you through the inspection.
Costs not coveredVehicle diagnosis, removal, fitting, coding and unrelated faults unless agreed.
Important: water ingress, physical damage, incorrect fitting or third-party modification may be excluded.

Questions customers ask

Is my DQ200 fault electronic or hydraulic?
Codes such as P1604 / 005636 (internal control module), P0562 (system voltage low) or no communication usually point to the TCU electronics. Pressure and pump codes such as P189C, P17BF or P0841 often come from the hydraulic side (accumulator, pump, valve body). The bench test tells you which, before you pay for a repair.
Do I send the whole mechatronic unit?
Yes – remove and send the complete mechatronic unit (TCU with valve body). Do not separate the electronics from the hydraulic part yourself.
Is my original unit repaired?
Yes. Your own mechatronic is repaired and returned, so its software and adaptations stay with the car. No exchange unit is needed.
Does the gearbox need adaptation after refitting?
Yes. After refitting, the DQ200 needs a basic setting / clutch adaptation with a suitable diagnostic tool. Your garage can do it, or we can do it at our workshop in Mansfield by appointment.
How much does it cost?
Bench test £45, deducted from the repair. TCU electronics repair £349 with tracked UK return. Hydraulic or valve body faults are quoted after the test. No VAT added.

Choose your service

Bench test & quote – deducted from repair Quote · £45 deposit Your own unit is tested, the confirmed fault repaired, and returned. Software stays matched to the car. Repair your DQ200 TCU (electronics) £349 Your own unit is tested, the confirmed fault repaired, and returned. Software stays matched to the car.
  • 12-month warranty on repairs
  • Tracked UK return included
  • No VAT added
  • Written report with every unit
  • Not repairable? Refund less the bench test

Shipping & drop-off

Post the unit to our lab in Rainworth, Nottinghamshire, or drop it in by appointment. Pack it in an anti-static bag with the fault codes and your VIN – see packing instructions. Tracked UK return is included in every price; turnaround is confirmed when the unit arrives.

Fitting in Mansfield

Fitting options are done by appointment at our Mansfield workshop: removal, refit, fault code clear, adaptations and road test. Book after ordering on WhatsApp or by email.

Questions

Repair, cloning or replacement – which do I need?

If your unit has a repairable fault, repair keeps your original and needs no programming. If it is damaged but readable, cloning to a matching used unit is usually cheapest. If it cannot be read or repaired, we quote a replacement with your data transferred where possible.

Will the car need coding after the work?

Not after a repair or a successful clone – the immobiliser and coding come from your original data. Some units need adaptations reset after fitting.

Does a fault code prove the unit is faulty?

No. Supply, earths, wiring, sensors and actuators can set the same codes. That is why every unit is tested first and you get a written report.

What if my unit is not faulty?

You pay only the bench test and receive the report to show your garage.

Do you remove immobilisers or emissions equipment?

No.

Not sure of the part number?

Send a photo of the label on WhatsApp or by email before ordering and we confirm the right service.