Mercedes, Dodge & Freightliner Sprinter + CDI Diesel ECM Cloning — Mail-In Bench Engine Computer Service
Dropped a used engine computer into your Sprinter or CDI Mercedes and now it cranks forever but never fires? The ECM carries the immobilizer relationship with the EIS/SKREEM, so a donor from another van will never start yours until the data is moved across. Mail in your original plus a matched donor and we clone identity, immobilizer, and calibration on the bench.
Sending several modules? Add them all — one box, one return-shipping charge.
Bosch CDI diesel engine ECMs — CR2.x, CR3.42 and CR3.43 families across OM611, OM612, OM613, OM642, OM646, OM647 and OM648 engines: Dodge / Freightliner / Mercedes Sprinter T1N and NCV3 (W906), E-Class W211, ML W163 / W164, R-Class W251, GL X164, S-Class, and Jeep Grand Cherokee 3.0 CRD. 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. Customer pays shipping to us.
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 CDI ECM's identity, immobilizer relationship, and calibration cloned onto the donor, where the original still reads
- Donor part-number compatibility verified against your VIN and both module labels before you ship anything
- Bench read and verification of both units before a single byte is written to the donor
- Bench communication test on a stable, regulated power supply before the module goes back in the box
- Clear install notes — what to expect at first key-on, and when a shop-side adaptation or relearn still applies
- A straight answer up front if your original is too far gone to clone, with the recovery path explained instead of a surprise
- Modules returned with tracking — return-shipping speed is 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.
Bosch CDI controller families covered
Sprinter T1N (2002–2006)
Sprinter NCV3 / W906 (2007–2018)
Mercedes passenger CDI — sedan & coupe
Mercedes SUV, van & Jeep CRD
Engine codes we work with
Best for
Will This Fix My Problem?
Honest answer: here's exactly what this service fixes — and what it doesn't.
Fixes:
- ✓Used Sprinter or CDI engine ECM installed and the engine cranks but never fires
- ✓Original engine computer failed and the dealer quote for a new coded ECM is out of proportion to the van's value
- ✓No communication with the engine ECM on a scan tool, and you already have a donor unit in hand
- ✓Immobilizer / start-error behaviour that appeared immediately after an engine-computer swap
- ✓Corroded or water-damaged ECM that still powers up — cloned out to healthy hardware before it fails completely
- ✓Salvage-yard ECM that needs your van's identity and calibration written to it so it is plug-and-play
Won't fix:
- ✗Does NOT include any emissions edit — no DPF, EGR, AdBlue/SCR, or catalyst deletes, on this or any other service. That is a hard company boundary and we will decline the job.
- ✗Does not include the donor ECM — you source a matching used unit and we verify the part numbers first
- ✗Does not revive an original that is internally dead or unreadable — a module that will not power up or respond cannot be cloned; that job routes to our ecu-advanced-recovery-service
- ✗Does not program keys or repair the EIS / SKREEM / WSP — see sprinter-key-programming-akl, sprinter-valet-key, and sprinter-start-error-repair for the key and ignition side
- ✗Does not fix a no-start caused by fuel supply, injectors, glow plugs, timing, wiring, grounds, or a weak battery
- ✗Does not remove or bypass the factory immobilizer — drive authorization stays fully intact
- ✗Does not bypass proof of ownership — immobilizer-related work requires it, no exceptions
Why a used Sprinter ECM cranks but never starts — and where the emissions line is
On every CDI diesel of this era the engine ECU is paired to the vehicle's EIS/SKREEM/WSP through drive authorization. Bolt in a donor from another van and it still carries that van's identity, so yours cranks indefinitely and never fires. Cloning moves your original's identity, immobilizer relationship, and calibration onto the donor so the car cannot tell the difference. One boundary, stated plainly because this is diesel work: we do not perform emissions edits of any kind — no DPF, EGR, AdBlue/SCR, or catalyst deletes. Cloning preserves your factory emissions calibration exactly as it is. Proof of ownership is required, and a technician verifies both labels before you ship.
Shipping Instructions
These details are also emailed to you the moment your payment clears.
Verify first: text or email us your VIN, engine code, and clear photos of your original ECM label and the donor's label — a technician confirms the Bosch and Mercedes/Chrysler part numbers are a compatible match, and tells you whether your original is readable, before you ship. Then send both units 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 on the bench, test communication, and 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 CDI engine ECM (even if damaged — if it powers up we can usually read it) AND the matched donor ECM
- Year, make, model, body style, and engine code (e.g. 2005 Dodge Sprinter 2500, 2.7L OM647)
- VIN of the vehicle
- Bosch number AND Mercedes / Chrysler part number off BOTH module labels — we pre-verify the match
- What is wrong now: original dead, cranks-no-start after a swap, no communication, water damage, etc.
- Whether the van has already had a donor ECM installed, and what the scan tool reported
- Proof of ownership (title, registration, or bill of sale) — required for immobilizer-related work
- Your name, return address, and a contact email or mobile number for updates
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?
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.
Why won't a used Sprinter engine computer just work when I plug it in?
Which controllers and engines does this actually cover?
Do you do DPF, EGR, or AdBlue deletes while you're in there?
Do you supply the donor ECM?
My original ECM is completely dead — can you still clone it?
Is this the same as your Sprinter key services?
Will my existing keys still work after the clone?
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 Sprinter / Mercedes CDI ECM Clone
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 back on your bench within a week.