How to Identify and Unlock CG MB FBS3 BGA KeylessGo Key?

How to distinguish Mercedes FBS3 BGA key and CG BGA KeylessGo key?



Part 1: CG KeylessGo Key Top Features 

Cg Keyless Go Key 1

1.) CGDI keyless go key support type: BGA-76 version and BGA-78 version

2.) Compatible with following Mercedes types:

W221-S series   W216-S series   W164-ML series   W251-R series  W166-ML series  W164-GL series 

3.) The following models are under test(not support yet):

W212-E series (release soon)  W207-C series (release soon)  W204-C series (release soon)

4.) Can be reused 

5.) Compatible with multiple Mercedes key programmers on the aftermarket, i.e CGDI MB, VVDI MB, AVDI etc



Part 2:  How to Reset CG KeylessGo Key?

1). Manual Reset

a. First press the Trunk button

b. Then press the LOCK button until the key indicator keeps turning on

c. Wait for 1 second, Press the UNLOCK button until the key indicator flashes twice.

d. Key has been erased successfully

Unlock Cg Keylessgo Key 1

Unlock Cg Keylessgo Key 2

Unlock Cg Keylessgo Key 3

2). Unlock via CGDI MB

Unlock Cg Keylessgo Key 4

Insert BGA keylessgo key into CGDI. Read key status, key has been used


Press Reset

Unlock Cg Keylessgo Key 5


Key has been erased/unlocked.



Part 3: BGA KeylessGo vs. NEC KeylessGo Key

BGA KeylessGo: has three separate buttons

Mb Bga Key Vs Cg Keyless Go Key In Unlocking Method 01

CGDI MB reads the BGA key version 78 or 76 (see picture below)

Identify Cg Keyless Go Key 1


NEC KeylessGo: The three buttons of this key are connected together.  This key is mainly used for the old Mercedes Benz models before 2009.
Don’t support 08, 09 version !!!

Mb Bga Key Vs Cg Keyless Go Key In Unlocking Method 03
Read the key with CGDI MB as picture below:

Identify Nec Key