How to read and program BMW CAS4 key?

This tutorial of 2011 BMW 525 CAS4 reading by VVDI prog programmer and key programming by Xhorse VVDI2 commander

Car: BMW 525 2011

Eeprom: CAS4 01L15Y

You need have a working bmw cas4 programmer and a good bmw key programmer.

Here: vvdi prog to read cas4 & vvdi2 to program a new key

Step 1 VVDI Prog read BCM

Run VVDI Prog software

Select type: 4-immobilizer, brand: BMW, type: CAS4-1L15Y

Click on Connection Diagram

Connect the MC9S12 adapter to the BCM

Remove the component and solder back after the operation is complete

Read CAS4 1L15Y

Operation success!

Then save the bin file

Step 2 VVDI2 bmw make dealer key

Open VVDI 2 Quick Start

Go to vvdi BMW

Select Key Learn-> File make key

Select Type: CAS4 1L15Y

Load the EEPROM dump file: open the bin file (read by vvdi prog)

Note the remote frequency, then select Key ID7

Make dealer key

Note: preparing dealer key needs about 30 minutes; the windows may be false read. Please wait for the end. Input the new key to the programmer, then continue.

Write the key successfully!

Go to the car with the key. No need to write back eeprom.

Done!

source:http://blog.obdexpress.co.uk/2017/02/13/bmw-cas4-reading-key-programming-via-vvdi-prog-vvdi2/