Mercedes SIM271DE2.0 ECU Clone & Renew — Continental ECM Identity / Drive Authorization Service
Replacing a failed Continental SIM271DE2.0 engine ECU on a 2010-era Mercedes? Mail in your original plus a used donor and we clone the identity, immobilizer, and drive-authorization data across on the bench — plug and play. Renew-to-virgin available when a clone isn't possible.
Sending several modules? Add them all — one box, one return-shipping charge.
Continental SIM271DE2.0 ECU — Mercedes M271 EVO 1.8L turbo CGI, roughly 2009–2015: C-Class W204 (C180/C200/C250), E-Class W212 / C207 (E200/E250), SLK R172 (SLK200/SLK250). Verified by VIN + ECU part 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 ECU's identity, immobilizer / drive-authorization (FBS) data, and coding cloned onto the donor, where the original responds
- Or the ECU renewed to a virgin / new state, ready to be married to your car's EIS at install
- Donor part-number compatibility verified by VIN and ECU label before you ship
- Bench read + verify of both units before anything is written
- Bench communication test with a stable, regulated power supply before return
- Clear install notes — what happens at first key-on and when SCN / variant coding applies
- Modules returned with tracking — return-shipping speed your choice at checkout
Compatibility
Confirm your part matches one of the variants below before ordering. Not sure? Text us a photo and we'll verify.
Service paths ($250 flat)
- Clone — original powers up: identity + immobilizer + drive authorization copied onto your donor, plug and play
- Renew — donor or original reset to virgin / new state for coding to your car's EIS
- Renew + code to EIS — original dead or missing: ship EIS + a working key with the donor (case-by-case)
- Used-ECU (second-hand ECM) installation prep — the most common use
Supported ECU
- Continental SIM271DE2.0 (M271 EVO direct-injection)
- Match donor by Mercedes part number off the ECU label
- Earlier SIM271KE2.0 (M271 Kompressor) — ask first, handled case-by-case
- Other Mercedes ECM families (MED17, CRD) — contact us before ordering
Common applications
- C-Class W204 — C180 / C200 / C250 CGI (~2009–2014)
- E-Class W212 sedan / wagon — E200 / E250 CGI
- E-Class C207 / A207 coupe & cabriolet
- SLK R172 — SLK200 / SLK250 (~2011–2015)
Best for
- Failed original ECU being replaced with a used / second-hand unit
- Donor ECU installed but car cranks and won't start (drive-authorization mismatch)
- Water- or corrosion-damaged ECM that still responds — clone it out before it dies
- Avoiding a dealer-only new ECM order plus tow and SCN coding bill
Will This Fix My Problem?
Honest answer: here's exactly what this service fixes — and what it doesn't.
Fixes:
- Used SIM271DE2.0 ECU installed and the car cranks but will not start
- Original engine ECU failed and a new dealer-coded ECM is quoted at four figures
- No communication with the engine ECU and you have a donor ready to program
- Drive-authorization / start-error message after an ECM swap
- ECM damaged by water, corrosion, or a failed repair but still powers up — clone it before it dies completely
- You need a second-hand ECM made plug-and-play for your exact car
Won't fix:
- Does not include the donor ECU — you source a matching used unit (we verify the part number first)
- Does not revive an original ECU that is internally dead — that becomes a renew + code-to-EIS job, sometimes needing your EIS and a working key shipped in
- Does not repair the EIS (ignition switch) itself — see our Mercedes EIS services
- Does not fix a no-start caused by fuel, spark, sensors, wiring, or a dead battery
- Does not remove or bypass the factory immobilizer — drive authorization stays intact
- Does not cover V6 / V8 / diesel Mercedes ECMs under this listing — contact us to verify yours
- Does not bypass proof of ownership
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.
Second-hand Mercedes ECU? It won't start your car until it's cloned or renewed
Every Mercedes engine ECU of this era is married to the car's EIS through the FBS drive-authorization system — bolt in a used ECU from another car and yours will crank but never fire. The dealer answer is a brand-new ECM, SCN-coded to your VIN, at four figures plus a tow. The bench answer is this service: if your original still powers up and responds, we clone its complete identity onto the donor so the car can't tell the difference — plug and play. If the original is missing or stone dead, we renew the donor to a virgin state so it can be married to your car; on those jobs a technician may ask you to ship the EIS and a working key so drive authorization can be coded on the bench. Proof of ownership is required for any immobilizer-related work, and a technician verifies your VIN and both ECU part labels before you ship anything.
Shipping Instructions
These details are also emailed to you the moment your payment clears.
Verify first: text or email us your VIN plus photos of your original ECU label and the donor's label — a technician confirms the part numbers are a compatible match before you ship. Then send both units (original + donor) for a clone, or the donor alone for a renew — on a dead-original job we'll tell you if the EIS and a working key need to come too — 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 clone or renew on the bench, test communication, and 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 SIM271DE2.0 ECU (if it powers up — this is the clone path) AND the donor ECU
- Renew-only jobs: the donor ECU (plus your EIS and a working key if a technician directs)
- Year, make, model, and engine (e.g. 2012 Mercedes C250 1.8L turbo)
- VIN of the vehicle
- Mercedes part number off BOTH ECU labels (we pre-verify the match)
- What is wrong now: original dead, cranks-no-start after swap, water damage, etc.
- Proof of ownership (title, registration, or bill of sale)
- Your name, return address, and phone number
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 SIM271DE2.0 and which cars use it?
Why won't a used Mercedes ECU just work when I plug it in?
What's the difference between clone and renew?
My original ECU is completely dead — can you still help?
Do you supply the donor ECU?
Does the immobilizer stay active after a clone?
Will the donor need dealer SCN coding after your work?
My car is a C300 / E350 / diesel — does this service fit?
How much is it and how does the mail-in work?
Related Services
Other bench services for the same brand or use case.
Mercedes EIS Cloning (Pre-2014)
Failed Mercedes EIS leaving you with a car that won't start? We clone it to a replacement EIS — your existing keys keep working, no re-keying the car.
Mercedes Key Replacement via EIS
Lost your only Mercedes key? Ship us your EIS — we program a fresh working key directly on the bench.
Mercedes ELV Emulator Programming
ELV (steering lock) failed? Ship your EIS — we program and supply a matched ELV emulator.
Where we serve Mercedes SIM271DE2.0 ECU Clone / Renew
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.