Mercedes Key Replacement via EIS (Mail-In)
Ship us your Mercedes EIS — we program a fresh working key directly on the bench.
Pre-2014 Mercedes with EIS/EZS (W204, W212, W221, W164, W251)
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 via Stripe. We email shipping address + instructions within minutes.
Ship Your Module
Pack per the instructions and ship to our Arlington workshop. USPS or UPS — your choice. Customer pays shipping to us.
Receive in 1-2 Days
Work completed within 24 hours of receipt. Ships back next business day. Return shipping included, tracking emailed.
What You Get
- Cut + programmed Mercedes key (HU64 or chrome key blade)
- EIS returned with key paired
- All-keys-lost supported
- 24-hour turnaround after EIS is received
- Return shipping included
- 6-month warranty on programming 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
EIS versions
Service scenarios
Will This Fix My Problem?
Honest answer: here's exactly what this service fixes — and what it doesn't.
Fixes:
- ✓All Mercedes keys lost (pre-2014)
- ✓Need a fresh key after a failed dealer programming attempt
- ✓Replacement EIS needs a new key paired to it
- ✓Existing keys somehow erased from EIS
Won't fix:
- ✗2015+ Mercedes (FBS4) — different system
- ✗EIS hardware failure (we program, not repair the EIS itself)
- ✗Steering lock (ELV) failures — see our ELV emulator service
Shipping Instructions
These details are also emailed to you the moment your payment clears.
You pay shipping to us. We cover return shipping. The EIS sits in the dash — pull the trim, disconnect the connector, ship the EIS only (no key required).
What to include in your box
- Mercedes EIS / EZS module
- A printed copy of your order confirmation email
- VIN of the Mercedes (for blade cut)
- Your name, return address, and phone number
Ship to
Auto Module Lab
1168 W Pioneer Parkway
Arlington, TX 76013
Frequently Asked
Still have a question? Text us — replies in minutes.
Do I need to send an original key?
What's the difference between this and EIS cloning?
Will my old keys still work?
Can you cut the key without the VIN?
How fast is turnaround?
Related Services
Other bench services for the same brand or use case.
Mercedes EIS Cloning (Pre-2014)
Clone a working Mercedes EIS to a replacement EIS — keeps your existing keys.
Mercedes ELV Emulator Programming
ELV (steering lock) failed? Ship your EIS — we program and supply a matched ELV emulator.
VW/Audi MED17/ME17 IMMO Delete + VIN
Permanently remove immobilizer coding from MED17/ME17 ECUs. Optional VIN correction.
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.