Automotive User And Repair Manuals

How to Program Chip Key for Benz ML350

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Three months ago ,I wrote a article about How to program IR Key for Benz.And one of readers read it and ask question about how to program new key for Benz ML350 2005.So in this article I will introduct guide on progamming key for Benz ML350 2005.Although this kind of model you hardly meet,but maybe some day you will need to do.

If you have read article mention above,you will know Benz key can be divied into two types:

  • Infrared ray (IR) Key
  • Chip key

Infrared ray key is performed useing infrared code to achieve the immobilizer.And chip key achieve immobilizer by matching data information between key chip data and immobilizer data information.This article will introduce chip key immobilizer system.

Old Benz ML350 IMMO based on:Chip Key+Immobilizer(AAM or EAM)+DEM

How to programe chip key for Benz ML350?

Step 1:Remove AAM

Locate AAM(under steering wheel) show as below picture.Open the AAM after you removing it,and you will find two PCB boards in it,one is more bigger than the other.Disconnect them,both of them typed MC68HC705X32 motorola and marked 0G47V.

Step 1:Remove AAM chip programm ml key

Step 2:Read out data

Read out data of chip 0G47V on smaller PCB.You can use digimaster 3 or XP programmer to read out data.

Step 2:Read out data

Step 3:Write key start

You can choose one of device:TM100/VVDI…or any other programer to do write key start.Here I take TM100 as example.Select “Generate key ”—>Select “Benz”–>Select “ML”–>Select “AAM (7935)”

mercedes ml chip key programming

Then,upload data you read out from 0G47 chip and you will get information about original key number.We need to choose one of key position,and put new 7935 chip into TM100 Programmer coil.Then follow the instruction to operate programmer software to generate new key,no need to write data back to 0G47V.

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