ECU & module repair / Gearbox control units

VAG DSG · Mercedes VGS · Land Rover TCU

The gearbox control unit failed.
That doesn't condemn the gearbox.

TCU and gearbox ECU testing, cloning, coding and exchange support for motorists and the motor trade. We identify the exact unit and prove the available data route before anybody buys another box.

Mercedes C220 transmission control unit connected for testing and cloning at Engine Clean UK
IDENTIFYREAD & TESTVERIFY
VAG DSG control unitsMercedes VGS2 / VGS3Land Rover enquiriesExchange support

The code on the casing matters

Similar gearbox.
Different electronics.

“It is a DSG” or “it is a Mercedes gearbox” is not enough to choose a donor. The unit family starts the conversation; the complete hardware identity decides whether testing, cloning, coding or exchange is the sensible route.

01
DQ200

VAG 7-speed DSG

Common identifiers include 0AM and 0CW. Exact generation and security must still be confirmed from the label and data.

02
DQ250

VAG 6-speed DSG

Often identified as 02E or 0D9. We check the full hardware identity before choosing a cloning or coding route.

03
DQ381

VAG 7-speed DSG

Commonly associated with 0GC applications. Similar casing does not prove electronic compatibility.

04
DQ500

VAG 7-speed DSG

Includes 0BH, 0BT and suitable 0DL enquiries. The precise unit and readable source data decide what is possible.

05
VGS2 / VGS3

Mercedes 7G-Tronic

Suitable 722.9 control-unit enquiries for testing, cloning and coding, subject to exact identification.

06
LAND ROVER

Transmission control units

Testing, cloning and coding enquiries assessed from the vehicle, gearbox and exact TCU label—never the badge alone.

A controlled decision

Clone, code
or exchange?

The right answer depends on what failed, what can still be read and whether the proposed replacement is genuinely compatible. A donor unit that looks right can still be the wrong answer.

TESTConfirm the control unit and available data.

We inspect the supplied unit, connector condition, identity and communication before agreeing the route.

CLONE OR CODETransfer supported data—or configure the replacement.

Cloning and coding are different processes. We use the route supported by that exact unit and vehicle.

EXCHANGEA matched exchange option where available.

Exchange is subject to stock, compatibility and the condition of the original core. It is not a universal shelf swap.

Proper diagnostics. Done correctly.

Test. Transfer.
Code. Prove.

  1. 01

    Identify

    Confirm the vehicle, gearbox, original unit and proposed donor or exchange requirement.

  2. 02

    Read and test

    Check the hardware, condition, communication and whether the required source data is accessible.

  3. 03

    Clone, code or exchange

    Complete the agreed supported route without pretending one method fits every transmission controller.

  4. 04

    Verify

    Bench checks and, where required, vehicle-side commissioning prove the result before the job is closed.

Start with what you have

Send the label.
We'll identify the route.

For a first enquiry, send the registration, make, model and year. A readable photograph of the TCU or gearbox-module label is even better. When an original and donor are being supplied, photograph both.

USEFUL FIRST-ENQUIRY EVIDENCE

Vehicle registration or VIN

Original control-unit label

Donor or exchange-unit label

Connector pins photographed straight on

Fault codes or diagnostic report

Do not delay the first call because you cannot provide everything. We can start with the vehicle details and explain exactly what is needed next.

Clear service boundaries

Control-unit work.
No gearbox fairy tales.

What we offer

TCU testing, supported data transfer, cloning, coding and exchange support for suitable identified units.

What we do not advertise

Mechanical gearbox rebuilding or physical mechatronic repair. If the evidence points elsewhere, we will say so.

Unreadable originals

If the original data cannot be recovered, a different programming or replacement route may be required—and some jobs may not be technically possible.

Customer-supplied units

Donors are accepted subject to identification and testing. Testing or labour fees may apply when a supplied unit is wrong or faulty.

Pricing and turnaround

Both depend on the exact unit, data access, donor or exchange route and any vehicle-side work. We confirm the scope before promising a figure or completion time.

Straight answers

Before sending
a gearbox ECU.

Can every gearbox control unit be cloned?

No. The exact TCU or mechatronic identifier, security generation, condition of the original and available data determine the route. We confirm the hardware before accepting or quoting the job.

Which DSG units do you work with?

Current in-house enquiries include VAG DQ200, DQ250, DQ381 and DQ500 control units. Support still depends on the exact label, hardware and whether the required data can be read.

Do you support Mercedes gearbox ECUs?

We offer testing, cloning and coding routes for suitable Mercedes VGS2 and VGS3 7G-Tronic units. Send clear photographs of both labels so we can confirm the exact version before anything is posted.

Can you help with a Land Rover transmission control unit?

Suitable Land Rover TCU testing, cloning and coding enquiries are welcome. Land Rover applications use different gearbox and control-unit families, so the vehicle details and unit label must be checked first.

Do you repair the mechanical gearbox or mechatronic unit?

No. This service is for control-unit testing, supported data transfer, cloning, coding and exchange support. We do not advertise mechanical gearbox rebuilding or physical mechatronic repair.

Can I supply my own donor TCU?

Yes, subject to identification and testing. If a customer- or trade-supplied unit is faulty, incorrect or cannot complete the required route, inspection and testing fees may still apply.

How much does TCU cloning cost?

A price cannot be confirmed from the vehicle model alone. We need the registration or VIN, gearbox or TCU label, fault information and donor details where applicable.

Part of the wider module service

Engine ECU or gearbox ECU—
the label comes first.

View ECU and module testing View engine ECU cloning and programming

VAG, Mercedes or Land Rover gearbox control unit?

Send the details.
We'll identify the next test.

Call 0161 222 4643