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How to add a key for BMW CAS4 mask 5M48H1N35H via OBD


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This article is going to show you how to add a key for BMW CAS4 mask 5M48H/1N35H via OBD.

Tools:
XTool A80Pro
KC501 Key Programmer

Procedure:

Connect A80Pro, VCI, KC501 and OBD port.

Special Function>>Key Programming>>BMW>>Immobilizer>>Manual select>>CAS4/CAS4+>>Keys Matching

Then we have our vehicle info.

how-to-add-a-key-for-BMW-CAS4-mask-5M48H

Keys info.

how-to-add-a-key-for-BMW-CAS4-mask-5M48H

We select “Key pos 3” and click on “KC100/KC501 generate spare key”.

how-to-add-a-key-for-BMW-CAS4-mask-5M48H

Select “Require original car key to operate” and follow the prompt.

how-to-add-a-key-for-BMW-CAS4-mask-5M48H

Finish!

We exit and enter “Key matching” again, and we can see the key pos 3 is occupied already.

Alright, that’s how we add a key for BMW CAS4 via OBD using XTool A80Pro Scanner and KC501 Programmer.

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