Original EIS/EZS Dumps (Mercedes-Benz)

One EIS/EZS Dump is the complete original read-out (flash and/or EEPROM) of the electronic ignition lock control unit (electronic ionization system / electronic ignition start lock) for Mercedes-Benz vehicles – including key password where available – and is required when an EIS/EZS needs to be repaired, cloned or synchronized with a new key.

The offer is aimed at workshops that have to solve a key loss, a defective ignition lock or an immobilizer problem at the EIS/EZS in Mercedes-Benz models.

What is included – what is not?

Coverage

  • Full Flash and/or EEPROM dump including Key Password (if available in the original)
  • Assignment by chassis (W209/W639/W906) and part number
  • Delivery by e-mail

Not included

  • No expansion or programming service on site
  • No key blank – only the dump file

How does the order proceed?

  1. Indicate chassis code (W209/W639/W906) and part number of the EIS/EZS
  2. Availability in the stock is checked
  3. Delivery of the dump by e-mail

Format & Expiry Details

  • File format: Bin file or tool-native format, depending on the control unit – is coordinated when ordering
  • Delivery: by e-mail, usually within 24–48 hours
  • Entry required: Original file read in full and control unit hardware/software number
  • Revision policy: If the key password is missing in the delivered dump, we check the cause and deliver free of charge, if technically possible.

Compatible Vehicles & Part Numbers

Chassis Model Part number (example) Chip
W209 C-category A2095450508 HC12, 3300.2404
W639 Vito/Viano A6399002201, A6395450908, A6395450108, A6399051100 MC9S12DT256 (0L01Y), ST12
W906 Sprinters A9065456408, A9069003303 MC9S12DT256 (0L01Y)

Frequent questions about EIS/EZS Dumps

What is an EIS/EZS at Mercedes-Benz?

The EIS (Electronic Ionization System, older models) or EZS (Electronic Ignition Start Lock) is the control unit that controls the ignition lock and immobilizer and links the key to the vehicle.

What is included in the Key Password?

The key password is the key code stored in the EIS/EZS, which is required to synchronize a new or replaced key.

For which Mercedes models is this dump available?

Current for the chassis W209 (C-Class), W639 (Vito/Viano) and W906 (Sprinter).

How do I find my EIS/EZS part number?

The part number is on the sticker of the EIS/EZS control unit, usually starting with A for Mercedes original numbers.

See also: Original ECU files, ECU Virgin method, Services.