Certified Locksmith · 15+ Years Experience

Mercedes EIS/EZS Cloning Service (Pre-2014)

Clone a working Mercedes EIS to a replacement EIS — keeps your existing keys.

$250 flat24-Hour TurnaroundReturn shipping included
Message Before You Buy

Pre-2014 Mercedes with EIS/EZS (W204, W212, W221, W164, W166, W251, W639)

NYBL Master Automotive Locksmith· ALOA-MAL Certified · Owner-Operator since 2012

How It Works

Three simple steps. We've completed hundreds of mail-in jobs for shops, technicians, and DIY owners across the country.

Mercedes EIS bench cloning
1

Buy & Receive Instructions

Click "Order Now", pay securely via Stripe. We email you the shipping address and step-by-step instructions within minutes.

Mercedes module dump in progress
2

Ship Your Module

Pack your module per the instructions and ship to our Arlington, TX shop. USPS or UPS — your choice. You pay shipping to us.

Mercedes interior with EIS in dash
3

Get It Back in 1-2 Days

We complete the work within 24 hours of receipt and ship back the next business day. Return shipping is on us. Tracking emailed.

What You Get

  • Donor EIS cloned to your VIN and original data
  • All existing keys continue to work in the cloned unit
  • No need to reprogram keys or visit dealer
  • 24-hour turnaround after both EIS units arrive
  • Return shipping included
  • 6-month warranty on cloning work

Compatibility

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

Chassis supported

W204 C-ClassW207 E-Class CoupeW212 E-ClassW221 S-ClassW164 MLW166 ML/GLE earlyW251 R-ClassW639 Vito/VianoW463 G-Wagen

EIS versions

NEC v51/v57Motorola pre-2009Renesas 2009-2014

Service scenarios

Original EIS dying — clone to a known-good donorKeep all existing keys workingAvoid all-keys-lost reprogramming cost

Will This Fix My Problem?

Honest answer: here's exactly what this service fixes — and what it doesn't. Save yourself time and shipping cost before ordering.

This service fixes:

  • ✓Original EIS intermittently fails — car will not start
  • ✓Replacement EIS needed but keys must keep working
  • ✓Avoid the cost + downtime of dealer all-keys-lost programming
  • ✓Donor EIS already sourced — just need it cloned

This service won't fix:

  • ✗2015+ Mercedes with FBS4 system (different cloning path)
  • ✗EIS is unreadable / completely dead (no clone source available — see our EIS key replacement service instead)
  • ✗Mechanical ignition lock failure

Shipping Instructions

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

You pay shipping to us. We cover return shipping. Ship BOTH the original EIS (clone source) AND the donor EIS (target) in the same padded box.

What to include in your box

  • Original Mercedes EIS (clone source)
  • Donor Mercedes EIS — same part number / variant (clone target)
  • A printed copy of your order confirmation email
  • VIN of the Mercedes
  • Your name, return address, and phone number

Ship to

Not Your Basic Locksmith

1168 W Pioneer Parkway
Arlington, TX 76013

Phone: (682) 344-1957 · Hours: 24/7

Frequently Asked

Still have a question? Text us — we usually reply within minutes.

Will my keys still work after cloning?
Yes — that's the whole point of cloning vs key replacement. The donor EIS is written with your original's data so all existing keys remain valid in the new unit.
Where do I get a donor EIS?
eBay, Car-Part.com, salvage yards. The donor must be the same part number as your original (often same chassis + same engine). Email us your part number before sourcing and we will confirm compatibility.
What if my original EIS is completely dead?
If we cannot read the original, we can't clone. In that case our EIS Key Replacement service ($150) is the right fit — we program a fresh key directly to a donor EIS without needing the original.
Will this work on a 2015 W205?
No. 2015+ uses Mercedes FBS4 which requires a different process. Contact us — we handle FBS4 on a case-by-case basis.
How long is turnaround?
24 hours from receipt of both EIS units. Most clones ship back the next business day with tracking.

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Ready to ship?

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

(682) 344-1957
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