Mercedes Gateway clone (ZGW) Module Clone Service

Watch our YouTube walkthrough: Mercedes Gateway Module Clone Service Video

If you have a new or used Mercedes Gateway  (ZGW) module and need to clone VIN, odometer, key data, and service records from your old module, this is the service for you. We handle mail-in modules nationwide and ensure your replacement unit functions just like the original.

How Our Mail-In Mercedes Gateway Clone Service Works

1. Label your modules: Mark your OLD module and your NEW or USED replacement module.
2. Ship to us: Send both modules to Karman Auto.
3. Cloning process: We transfer VIN, mileage, ASSYST service counters, key recognition, and other coding data to your new unit.
4. Return shipment: Modules are tested and shipped back fully programmed.

Common Mercedes-Benz Gateway (ZGW) Issues

Gateway modules fail for several reasons. Below are the most common problems:

• Water Damage / Flooded Module: Often caused by vehicle leaks or flood exposure. Requires VIN, mileage, and service data transfer.
• No Key Recognition / Key Programming Issues: Original keys may not start the vehicle if the Gateway is replaced or cloned incorrectly.
• VIN & Odometer Transfer Problems: Replacement modules may show incorrect VIN or mileage. Cloning ensures correct vehicle identity and odometer integrity.
• Service Data / ASSYST Errors: Oil change counters, service interval data, and maintenance schedules may reset or become incorrect.
• ASSYST+ Countdown Issues: Main odometer and ASSYST+ counters may desync, causing maintenance notifications to fail.
• Module Corruption / Internal Software Failure: Flash or EEPROM corruption can prevent communication with vehicle networks.
• Communication Errors Across Vehicle Networks: BCM, ECU, and instrument cluster may lose communication, causing warning lights or malfunctioning convenience systems.
• Aftermarket or Salvage Module Replacement: Salvage modules often have wrong VIN, keys, or service data.
• Electrical Damage: Short circuits, overvoltage, or bad fuses can damage internal circuits.
• IMMO / Security Lockout Issues: Vehicle may not start if VIN, mileage, or key data is missing or mismatched.

Supported Mercedes-Benz Models & Years

Our service supports almost all ZGW modules across common Mercedes-Benz models:

E-Class (W210 / W211)

• 1999–2001 W210
• 2001–2006 W211 (ASSYST & ASSYST+)
• Part Numbers: A211 540 35 45, A211 445 20 00, A211 445 25 00, A211 540 56 45, A211 540 84 45, A211 445 26 00, A211 540 25 45, A211 540 29 45, A211 540 31 45, A212 540 21 45

S-Class (W220 / W221)

• 1998–2006 W220
• Part Numbers: A221 540 84 62, A221 540 89 45, A221 540 54 45

C-Class (W203)

• 2000–2004 W203
• Part Numbers: A203 540 45 00, A203 540 34 00

A-Class / B-Class (W169, W245)

• 2005+ W169, W245
• Part Numbers: A169 540 39 45, A169 540 04 44, A171 540 50 45, A171 540 49 45, A164 540 67 45, A164 540 01 62, A164 540 42 45

Optional / Misc / Newer Gateways

• A212 540 22 45, A207 540 35 45, A204 540 25 45, A205 540 31 45, A218 540 33 45

Why Choose Karman Auto for Mercedes ZGW Clone Services?

• Nationwide mail-in service
• All years and most ZGW part numbers supported
• Full VIN, odometer, ASSYST, ASSYST+, and key data transfer
• Repair flooded, damaged, or non-functioning modules
• Fast turnaround, fully tested, and ready to install
• Trusted by Mercedes owners and repair shops since 1999

FAQs

• Q: Can you clone a flooded Gateway?
  A: Yes, we can transfer all necessary data to a new or used replacement unit.
• Q: Do I need to send original keys?
  A: No keys are required for VIN and mileage cloning, but key cloning requires your original keys if you want them to work with the new module.
• Q: What is the turnaround time?
  A: Typically 24 hrs depending on module condition and shipping.

Add to Cart → Label OLD module & NEW/USED module → Ship to KARMAN AUTO