March 20, 2026

How to Solve Keydiy KD-X4 BMW BDC3 WAKE Line Not Connected Error

Problem:

Failed to read BMW BDC3 encrypted key data with Keydiy KD-X4. The APP said the wake line is not connected. Any solution?

Keydiy KD-X4 BMW BDC2 BDC3 WAKE Line Not Connected 1

Keydiy KD-X4 BMW BDC2 BDC3 WAKE Line Not Connected 2

 

Solution:

TheWAKE line (encrypted pin 17)is not connected.

Use the wrong adapter.

You can modify the keydiy adapter like this:

Keydiy KD-X4 BMW BDC2 BDC3 WAKE Line Not Connected 3

 

Keydiy KD-X4 BMW BDC2 BDC3 WAKE Line Not Connected 4

 

Or use theKeydiy dedicated DB25 adapterwithout modification.

Keydiy KD-X4 BMW BDC2 BDC3 WAKE Line Not Connected 5

Posted by: jean at 07:43 AM | No Comments | Add Comment
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