A4 (B8) – Activate turn signals in US mode

Purpose: to activate the blinkers in US mode.


Proceed :
1 – Engine off, ignition off, connect your official VAG-COM VCDS cable to the computer, then plug the other end into your vehicle’s diagnostics socket.

2 – Switch on the ignition and run the VCDS program.

Line 1:

3 – Click on“Select”, then click on“09 – Cent. Elect.”.

4 – Click on“Coding – 07” then click on“Long Coding Helper” .

5 – Select Byte 10:
Bit 0 : Check box

Line 2:

3 – Click on“Select”, then click on“09 – Cent. Elect.”.

4 – Click on“Coding – 07” then click on“Long Coding Helper” .

5 – Select Byte 2:
Bit 6: Check the “Daytime Running Lights via Side Marker Lights active” box

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