Lonsdor K518 Program BMW X6 CAS3++ Remote Key

Guide to add remote key to a BMW X6 CAS3++ immobilizer system by using Lonsdor K518 key programmer.

 

Procedure:

Step 1: Update CAS3++

Connect K518 host with vehicle via OBD socket

Select BMW->By System-> CAS2/CAS3-> Program key

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Ready to generate dealer key:

  1. The operation can add a key to vehicle (select unused key position)
  2.  The operation can replace original key (select used key position)
  3. Can generate key with K518 by OBD or slot

Press YES

Insert key that will start vehicle
Turn ignition ON

Lonsdor K518 will display CAS information

It shows the CAS type is not supported, follow guides to update CAS++ (ISTAP).

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select CAS3 Update

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Ready to update CAS3

  1. The operation will update CAS++
  2. Please backup original EEPROM data before operation

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Insert key that will start vehicle
Turn ignition ON

Read CAS part number and type. Then read key information, tooth code, remote frequency, ignition key position etc

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Read to update CAS. The procedure takes about 10 minutes

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Do not carry on if battery voltage is lower than 11.5V

Make sure vehicle has enough power supply andn battery voltage is higher than 11.5V.

Don’t disconnect battery nor insert key into ignition during the procedure.

If it is smart key, take away from vehicle

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Remove key from ignition
Take smart key away from vehicle

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Restarting CAS…

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Erasing FLASH data

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Downloading and verifying data until it completed

 

Step 2: Program Key

Select Program Key function on Lonsdor K518ISE menu

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Insert a working key and turn on ignition

K518 read updated CAS information

Encrypted CAS, please backup EEPROM data before operation

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Read key information again

Reading RAM, takes about 1 minute

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Remove key from ignition
Take smart key away from vehicle

serurity check
reading key information

Select a unused key position (Key Position 3 or 4) and generate by OBD

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Insert the key to be programmed into K518 host slot to identify if the key is brand new

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Select key type: Remote Key

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Insert the key to be programmed into ignition
Put smart key into card slot
Well connect Lonsdor K518 key programmer with vehicle

Writing key information

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To program smart key or remote key, you need complete follow steps:

  1. Remove key from ignition
  2. Insert key
  3. Press on Start button

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If cannot start vehicle, or dashboard displays ELV icon , you may need to synchronize DME or ELV accordingly
Write key success

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Test the new remote key.

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