Setup X-horse BMW Multi Tool CAS Plug to program EWS key

X-horse BMW Multi Tool is the first universal key programmer that can program both BMW CAS (CAS1, CAS2, CAS3, CAS3+ and CAAS4) and EWS key.

BMW Multi Tool key programmer alone cannot program EWS key, you need to connect it with a CAS PLUG. The CAS PLUG for BMW Multi Tool adds EWS function and some CAS possibilities.

CAS PLUG adapter:

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1.Connect to device OBDII

2.Supply 12V voltage

3.EWS OBD line

4.EWS OBD line 2

5.7 Series CAS1/CAS2 plug

6.CAS3/CAS3+ plug

How to Connect EWS with CAS Plug:

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How to Connect 7 Series CAS1/CAS2 with CAS Plugbmw-multi-tool-4How to connect CAS 3/CAS3+ with CAS Plug:

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BMW Multi Tool: program EWS and CAS Key from EEPROM Dump

Before programming a BMW Key, you need to have a basic understanding of your BMW immobilizer system. BMW immo system can be generally divided into two categories: EWS and CAS.

BMW

EWS immo:EWS1、EWS2、EWS3、EWS4

CAS immo:CAS1、CAS2、CAS3、CAS3+、CAS4

How to tell your BMW is EWS or CAS immo?

  1. Year

1) 2000-2003/04 BMW 3-series, 5-series, 7-series with straight shank remote control key belongs to EWS system, like picture below.

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Here is the EWS immobilizer ECU

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2) 2004-2006 BMW 3-series, 5-series, Z4, X5, X3 belongs to CAS2 system. CAS2 and CAS3 immo ECU picture display as below. Another Straight shank remote control key (similar to Land rover key) with BMW logo, but in black color, belongs to CAS2 immo system as well.

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3)

CAS1: old BMW 7-series

CAS2: 2004-2006 BMW 3-series, 5-series, Z4, X5, X3

CAS3: BMW 3-series, 5-series before year 2010

CAS3+ BMW 3-series after year 2010

CAS4: BMW 5-series after 2010, BMW 1-series after 2011

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  1. Car key type

CAS1 BMW 7-series should insert the smart card into the slot and press start key.

CAS2 is the straight shank remote control key

If BMW key needs insert smart card into the slot and press one key to start vehicle, all these keys are easier before CAS+., almost of them are CAS3.

CAS4 key no need to insert the smart card to slot, directly press Start button

For example, if your car id BMW X5 2009, it should be CAS3 system.

After confirm your immo type, the next is to pick up a proper key programmer. AK90 key programmer (for all EWS), AK300 key programmer, Car key master, BMW Multi Tool are all good options for BMW key programming. BMW Multi Tool is the most stable and recommended.

BMW Multi Tool key programmer is mainly designed to work on CA1, CAS2, CAS3, CAS+ CAS4. But it newly added EWS key programming if provided with CAS PLUG EWS adapter.

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CAS1 write key

CAS2: requires demolition, write key after read data

CAS3 and CAS3+: no need demolition

BMW Multi Tool has two key programming options: File Make Key and Make Key online via OBD2.

1) File Make Key:

Select “File Make Key” tab,

Insert new CAS2 key into the CAS Adapter

Do not need to connect BMW Multi Tool with vehicle, only connects it with computer,

Select CAS2

Click Key learning

CAS2 key has been programmed
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2) Make Key online via OBD2

Connect BMW Multi Tool with vehicle, then connect with computer,

Select Auto Detect, the system will automatically detect the protocol and type

Click Write EEPROM, then click Save to File…

Click Key Learning.

Then the system will display following message:

Make dealer key- using CAS Adapter (make key using CAS adapter)

Make dealer key-using ignition switch (Turn ignition ON/OFF)

The first way is frequently used.

Click Get Key Info, then the system will display key information. Select any key position number (KeyID3, 4,5)

Insert the new smart card into the CAS Adapter, click “Make Dealer Key-using CAS Adapter”

After that the system will display, select Add key, press Next

Make dealer key successfully.

Plug the original key form key slot, insert the new key into the key slot, the new key is ready to use, the remote can be activated as well.

Click “Synch DME-CAS”

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