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VW & Audi Bosch MED9.x FSI / TFSI ECU Cloning & Immobilizer-Off — Mail-In Bench Service

Mk5 GTI, Passat B6, A3 8P, or A4 B7 cranking forever after a used ECU went in? Mail in your original plus the donor and we clone the identity and immobilizer across on the bench so the replacement runs plug-and-play — or take the immo-off path instead for a legitimate repair or standalone build.

$250 flatFast TurnaroundFlat-rate return shipping

Sending several modules? Add them all — one box, one return-shipping charge.

Text Before You Buy

Bosch MED9.x direct-injection petrol ECUs — MED9.1, MED9.1.1, MED9.5.10 — across VW Golf Mk5 / GTI, Jetta Mk5, Passat B6, Eos, Scirocco and Audi A3 8P, A4 B7, A6 C6, TT Mk2 (FSI / TFSI, roughly 2004–2010), plus Škoda and SEAT cousins. Verified by VIN + module label before you ship.

How It Works

Three simple steps. Hundreds of mail-in jobs completed for shops, locksmiths, and DIY pros.

Bosch MED9 FSI engine control unit opened on the bench with programming leads connected
1

Pay & Get Address

Click "Order Now", pay securely online. We email shipping address + instructions within minutes.

Bench software transferring immobilizer and coding data between two Bosch MED9 ECUs
2

Ship Your Module

Pack per the instructions and ship to Arlington. USPS goes to our PO Box; UPS and FedEx must use the street address. Customer pays shipping to us.

Macro view of a Bosch MED9.1 direct-injection ECU circuit board and processor
3

Receive in 1-2 Days

Work completed within 24 hours of receipt. Ships back next business day at the return speed you chose at checkout — standard to overnight. Tracking emailed.

What You Get

  • Your original MED9 ECU's identity, immobilizer data, coding, and learned adaptations cloned onto your donor — immobilizer preserved, existing keys keep working
  • Or, on the immo-off path, the immobilizer requirement removed from the module so it runs on a standalone, orphaned, or swapped platform
  • Donor part-number compatibility verified against your VIN and both ECU labels BEFORE you buy or ship anything
  • A full bench read and verify pass of both units before a single byte is written
  • Checksum-correct write with a powered communication test on a stable, regulated bench supply before return
  • Plain install notes — what happens at first key-on, and which adaptations relearn on their own
  • Modules returned with tracking, at the return-shipping speed you select and pay for at checkout

Compatibility

Confirm your part matches one of the variants below before ordering. Not sure? Text us a photo and we'll verify.

Two service paths — one flat $250

CLONE — original still powers up: identity, immobilizer data, coding, and adaptations copied to your donor, plug-and-play, immobilizer PRESERVEDIMMO-OFF — the immobilizer requirement removed from the module for a legitimate repair, standalone, orphaned, or swapped platformClone is the right answer for a road car keeping its factory cluster and keysImmo-off is the right answer when the cluster or key system is gone, damaged, or was never part of the buildBoth paths include a bench read, a verify pass, and a powered communication test before returnYou choose the path with a technician during pre-ship verification — the price does not change

Bosch MED9 variants covered

MED9.1 — the volume 2.0 FSI / TFSI controller of the Mk5 and B6 eraMED9.1.1 — the later revision of the 9.1 hardware, including six-cylinder FSI applicationsMED9.5.10 — the later MED9 unit used across the tail end of the generationRelated MED9.x sub-variants and part-number-specific requestsThe Bosch number and VAG part number on the ECU label decide compatibility — model year alone never doesMED9 sits between ME7 and MED17: if your label says ME7 or MED17, you want a different page

Volkswagen applications (~2004–2010)

Golf Mk5 and GTI 2.0 FSI / TFSIGolf Mk5 Edition 30 / Pirelli and Golf Mk6 carry-over unitsJetta Mk5 2.0 FSI / TFSIPassat B6 2.0 FSI / TFSIEos 2.0 TFSIScirocco Mk3 2.0 TSI early applications — verify the label first

Audi applications (~2004–2010)

A3 8P 2.0 FSI / TFSI, including S3 8P applicationsA4 B7 2.0 TFSIA6 C6 petrol FSI applicationsTT Mk2 2.0 TFSIA5 / Q5 early TFSI carry-over units — confirmed case-by-case from the labelOther Audi FSI applications of the era handled case-by-case after verification

Škoda & SEAT cousins

Škoda Octavia II and Octavia II vRS 2.0 TFSIŠkoda Superb II petrol applicationsSEAT Leon Mk2 and Leon Cupra 2.0 TFSISEAT Altea and Toledo petrol applicationsSame Bosch hardware as the VW and Audi cars — the part number confirms it

Best for

A used or salvage-yard MED9 ECU that cranks the engine but never startsAn original that is water-damaged or corroding but still responds — clone it out before it stops responding entirelyA failed ECU with a dealer replacement quote and a coding appointment attachedFSI / TFSI engine swaps, standalone builds, and orphaned platforms needing a legitimate immo-offIndependent shops and locksmiths handing off the bench half of an ECU replacementAnyone who wants the module fully ready before it goes into the car

What decides fitment (and how we verify)

The Bosch number and VAG part number on the ECU label — the deciding factor on every MED9 jobMED9 sub-variant and hardware revision, both carried on the labelWhether your original still powers up and responds (clone) or does not (immo-off / recovery)Donor must be the same MED9 sub-variant and a compatible hardware revision — a same-year, same-engine car is not automatically a matchText or email us the VIN plus clear photos of BOTH ECU labels and we confirm the pair, free, before you buy or ship

Will This Fix My Problem?

Honest answer: here's exactly what this service fixes — and what it doesn't.

Fixes:

  • ✓Used MED9 ECU installed in a Mk5 GTI, Passat B6, A3 8P, or A4 B7 and the engine cranks but will not start
  • ✓P1570 engine start blocked by immobilizer, or an immobilizer-active message after an ECU swap
  • ✓Original FSI / TFSI ECU failing from water ingress or corrosion but still responding — cloned before it dies
  • ✓Dealer quotes a new coded ECU plus a programming appointment on a fifteen-year-old car
  • ✓FSI / TFSI engine swap or standalone build blocked by an immobilizer with no cluster or keys left to satisfy
  • ✓You need a second-hand MED9 unit made genuinely plug-and-play for your exact car

Won't fix:

  • ✗Does NOT include emissions edits of any kind — no DPF, EGR, AdBlue/SCR, catalyst, lambda, or readiness-monitor defeat work. This is a hard company boundary with no exceptions, on any platform, for any reason.
  • ✗Does not include the donor ECU — you source a matching used unit and we verify the part number first
  • ✗Does not revive an original that is internally dead, burnt, or will not respond on the bench — that is our ecu-advanced-recovery-service, and a completely unreadable original cannot be cloned from
  • ✗Does not cover the neighbouring families — ME7 cloning is vw-audi-me7-ecu-clone, MED17 / ME17 immo-off is vw-audi-immo-delete-vin-program, MED17 / ME17 cloning is vw-audi-bosch-ecu-clone, and Continental Simos is vw-audi-simos-immo-clone
  • ✗Does not cover the diesels — EDC16 is vw-audi-edc16-tdi-immo-delete and EDC17 is vw-audi-edc17-tdi-immo-off-clone
  • ✗Does not repair or clone the instrument cluster or BCM2 body module — those are vw-audi-cluster-clone and vw-audi-bcm2-clone, and it does not fix a no-start caused by fuel, ignition, high-pressure fuel pump, sensors, wiring, or grounds
  • ✗Does not bypass proof of ownership — immobilizer work requires it, without exception

MED9 is the generation people misidentify most — check the label first

MED9 sits in an awkward spot in the VW Group timeline: it replaced ME7 on the direct-injection engines and was itself replaced by MED17, and all three generations overlap across model years on the same cars. A 2008 Golf can be MED9 or MED17 depending on engine and build date, so ordering by model year is how people end up with the wrong service and the wrong donor. The label settles it. Send a clear photo of your ECU's Bosch number and VAG part number plus the VIN, and a technician tells you which family you actually have, which service page it belongs on, and whether your job is a clone or an immo-off — all before you spend anything.

Shipping Instructions

These details are also emailed to you the moment your payment clears.

Verify first: text or email us your VIN plus clear photos of your original MED9 ECU label and the donor's label — a technician confirms the Bosch and VAG part numbers are a compatible match, and tells you whether your job is a clone or an immo-off, before you ship or buy anything. Then send the modules to PO Box 120241, Arlington TX 76012 if you ship USPS — or 1009 Oakwood Ln # 120241, Arlington TX 76012 if you ship UPS or FedEx (UPS and FedEx cannot deliver to a PO Box). We read, clone or immo-off, and communication-test on the bench, then ship everything back via the return option you pick at checkout (Standard $24.95, UPS 2-Day $54.95, or UPS overnight $94.95).

What to include in your box

  • Your original MED9 ECU (the clone path needs it — as long as it powers up we can usually read it) AND the donor ECU
  • Immo-off jobs: the single module the immobilizer is being removed from
  • Year, make, model, engine code, and transmission (e.g. 2007 VW GTI Mk5 2.0 TFSI BPY, DSG)
  • VIN of the vehicle
  • The Bosch number AND the VAG part number off BOTH ECU labels — we pre-verify the match
  • Which path you want and why: used-ECU install, failing original, engine swap, standalone build
  • Proof of ownership — title, registration, or bill of sale (required for all immobilizer work)
  • Your name, return address, and an email address or phone number we can reach you at

Ship to

Auto Module Lab

If shipping USPS

PO Box 120241
Arlington, TX 76012

If shipping UPS or FedEx

1009 Oakwood Ln # 120241
Arlington, TX 76012

Both shipping labels — to the lab and back to you — are purchased the moment you order. Your prepaid inbound label (already addressed) arrives by email; the return ships on the speed you chose at checkout.

Need to perform this job remotely?

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Buy the interface once — program with us anytime. Supported procedures vary by vehicle, module, OEM software and security requirements.

Frequently Asked

Still have a question? Text us — replies in minutes.

What is a MED9 ECU and which cars use it?
MED9 is the Bosch direct-injection engine controller VW Group used from roughly 2004 to 2010, sitting between the older ME7 and the newer MED17. You will find MED9.1, MED9.1.1, and MED9.5.10 on the VW Golf Mk5 and GTI 2.0 FSI / TFSI, Jetta Mk5, Passat B6, Eos, and Scirocco, and on the Audi A3 8P, A4 B7, A6 C6, and TT Mk2, plus the Škoda Octavia II and SEAT Leon Mk2 cousins. The variant is printed on the ECU label.
Why won't a used MED9 ECU just work when I plug it in?
Because the immobilizer relationship is stored inside the ECU and still belongs to the donor car. When you install it, the module and your car's immobilizer system fail to agree, so the engine cranks and cranks without firing — often with an immobilizer warning or a stored P1570. Cloning copies your original's identity onto the donor so the mismatch never happens; immo-off removes the requirement entirely on builds with no key system left to satisfy.
How do I tell MED9 apart from ME7 or MED17?
By the label, not the model year — the three generations overlap on the same cars depending on engine and build date, which is exactly how people end up ordering the wrong service. Your ECU carries a Bosch number and a VAG part number on its sticker. Send us a clear photo of both plus the VIN and a technician tells you which family you have and which page it belongs on, before you spend anything on a donor or on shipping.
What's the difference between the clone path and the immo-off path?
Clone keeps everything factory: your original still powers up, so we copy its identity, immobilizer data, coding, and adaptations to the donor. The result installs plug-and-play, your keys keep working, and the immobilizer stays fully active. Immo-off removes the immobilizer requirement from the module, which is the right answer for a standalone build, a swapped chassis, or an orphaned platform with no cluster or keys. Both are $250 flat — you choose with a technician before you ship.
Do you supply the donor ECU?
No — you source a used donor from eBay, a salvage yard, or a parts recycler, and we verify it before you spend money. Match both numbers on the label: the Bosch number and the VAG part number. Send us photos of your original's label, the donor listing, and your VIN, and a technician confirms whether the pair will clone cleanly. That verification is free and happens before you buy or ship.
Do you offer DPF, EGR, or emissions edits on a MED9?
No. Auto Module Lab performs no emissions edits of any kind — no DPF, EGR, AdBlue/SCR, catalyst, lambda, or readiness-monitor defeat work — on any platform, for any customer, for any stated reason. This service is strictly immobilizer and identity work: cloning a module so a legitimate replacement runs, or removing an immobilizer requirement for a legitimate repair or standalone build. Please do not ask us to make an exception.
My original MED9 is completely dead — can you still help?
If it will not power up or respond at all on the bench, there is nothing to clone from, so this is not the right service. That job belongs to our ecu-advanced-recovery-service, which attempts a direct read of dead, burnt, water-damaged, and no-communication modules. Contact us with your VIN, the ECU part number, and what happened to it, and we will tell you honestly whether recovery is realistic before you spend anything.
How much is it and how does the mail-in work?
It is $250 flat for either path. After a technician verifies your VIN and both ECU labels, you mail the module or modules to Auto Module Lab in Arlington, TX — USPS to the PO Box, or UPS/FedEx to the street-addressed form of the same box, since UPS and FedEx cannot deliver to a PO Box. We do the bench work, run a powered communication test, and ship back with tracking at the return speed you pick and pay for at checkout: Standard $24.95, UPS 2-Day $54.95, or UPS overnight $94.95. This is a mail-in bench service only — we do not travel to vehicles.

Related Services

Other bench services for the same brand or use case.

VW/Audi MED17/ME17 IMMO Delete + VIN
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VW/Audi MED17/ME17 IMMO Delete + VIN

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VW/Audi EDC16 TDi IMMO Delete
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VW / Audi ME7 IMMO Off
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VW / Audi ME7 IMMO Off

Swap or race build stuck because the cluster and keys are long gone? We turn the immobilizer off inside your Bosch ME7.x ECU so it runs standalone.

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Where we serve VW/Audi MED9 ECU Clone / Immo-Off

Mail-in means nationwide — we accept modules from all 50 states and DC from our Arlington, Texas lab. See your state, metro, or specific vehicle:

All 51 US states + DC

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Ready to ship?

$250 flat, fast turnaround. Pay now, get the shipping address by email, drop it in the mail. Your module is back on your bench within a week.

(817) 678-3252

Guides from the Lab

Deep-dive technical guides from our bench that cover this service.

VW & Audi Module Cloning: Which Modules Can Be Cloned

Can an Audi module be cloned onto a donor? Here is which VW and Audi ECUs, BCMs, clusters and steering locks clone, which need immo-off, and which do not.

Read the guide