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 can go in without dealer coding (plug-and-play when your original's data is intact and the donor matches) — or take the immo-off path instead for a legitimate repair or standalone build.
Sending several modules? Add them all — one box, one return-shipping charge.
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.
Pay & Get Address
Click "Order Now", pay securely online. We email shipping address + instructions within minutes.
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. Your prepaid inbound label arrives by email — shipping to us costs you nothing.
Get It Back Fast
Work typically 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 when the donor matches your original), immobilizer PRESERVED
- IMMO-OFF — the immobilizer requirement removed from the module for a legitimate repair, standalone, orphaned, or swapped platform
- Clone is the right answer for a road car keeping its factory cluster and keys
- Immo-off is the right answer when the cluster or key system is gone, damaged, or was never part of the build
- Both paths include a bench read, a verify pass, and a powered communication test before return
- You 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 era
- MED9.1.1 — the later revision of the 9.1 hardware, including six-cylinder FSI applications
- MED9.5.10 — the later MED9 unit used across the tail end of the generation
- Related MED9.x sub-variants and part-number-specific requests
- The Bosch number and VAG part number on the ECU label decide compatibility — model year alone never does
- MED9 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 / TFSI
- Golf Mk5 Edition 30 / Pirelli and Golf Mk6 carry-over units
- Jetta Mk5 2.0 FSI / TFSI
- Passat B6 2.0 FSI / TFSI
- Eos 2.0 TFSI
- Scirocco Mk3 2.0 TSI early applications — verify the label first
Audi applications (~2004–2010)
- A3 8P 2.0 FSI / TFSI, including S3 8P applications
- A4 B7 2.0 TFSI
- A6 C6 petrol FSI applications
- TT Mk2 2.0 TFSI
- A5 / Q5 early TFSI carry-over units — confirmed case-by-case from the label
- Other Audi FSI applications of the era handled case-by-case after verification
Škoda & SEAT cousins
- Škoda Octavia II and Octavia II vRS 2.0 TFSI
- Škoda Superb II petrol applications
- SEAT Leon Mk2 and Leon Cupra 2.0 TFSI
- SEAT Altea and Toledo petrol applications
- Same 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 starts
- An original that is water-damaged or corroding but still responds — clone it out before it stops responding entirely
- A failed ECU with a dealer replacement quote and a coding appointment attached
- FSI / TFSI engine swaps, standalone builds, and orphaned platforms needing a legitimate immo-off
- Independent shops and locksmiths handing off the bench half of an ECU replacement
- Anyone 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 job
- MED9 sub-variant and hardware revision, both carried on the label
- Whether 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 match
- Text 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 matching second-hand MED9 unit to take over your original's identity and immobilizer data
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
Before you order
You diagnose, we service the module.
We don't have your car and we don't diagnose it. Order once you or your mechanic have confirmed this module is the cause. If the work is completed and the car still has the same symptom because of another fault, the work is still done — a bench re-test under warranty is free.
A clone copies what is in your module.
We transfer the data as we read it. If another shop or tool already worked on the module — an unfinished clone, a tune, a delete — that data can come across too. Tell us before you ship.
What "plug-and-play" means.
No dealer programming should be needed when your original data is intact, the donor matches your module (same type, hardware and software family) and the rest of the car works. It isn't a promise that the car will start or run.
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 $29.95, 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
Your prepaid inbound label (already addressed) arrives by email the moment you order; the return label is bought when your module reaches the bench and ships on the speed you chose at checkout.
Need to perform this job remotely?
Get an Auto Module Lab Remote Programming Kit and have our technicians program supported vehicles from your shop — the car stays on your lift and nothing gets posted.
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?
Why won't a used MED9 ECU just work when I plug it in?
How do I tell MED9 apart from ME7 or MED17?
What's the difference between the clone path and the immo-off path?
Do you supply the donor ECU?
Do you offer DPF, EGR, or emissions edits on a MED9?
My original MED9 is completely dead — can you still help?
How much is it and how does the mail-in work?
Related Services
Other bench services for the same brand or use case.
VW/Audi MED17/ME17 IMMO Delete + VIN
Engine swap or standalone build blocked by the immobilizer? We permanently remove the immobilizer coding from your MED17/ME17 ECU so it runs on its own. Optional VIN correction.
VW/Audi EDC16 TDi IMMO Delete
TDI swap or an immobilizer-blocked EDC16 no-start? IMMO delete for older VW + Audi EDC16 TDi ECUs (2004-2009) — separate from our MED17/ME17 gas service.
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.
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:
Ready to ship?
$250 flat, fast turnaround. Pay now, get the shipping address by email, drop it in the mail. Your module is typically back on your bench within a week.