Mainly for anyone who uses obdeleven but it may be the same answer for vcds...

 

I've been following the guide for enabling high beam assist and have actually got it working, however had a query about instructions for changing bits as per the below section - where it says "Bit 4-7" or "Bit 5-7" what does that mean specifically? I go into the required byte and just have a list of Bits individually numbered. Is it a range that I select all of or does it mean something else? To get mine working I missed out the stuff in Byte 19 and just selected Bit 5 in Byte 21 as per a youtube video I found and it worked.

 

Controller A5 - Front Sensor
Coding (using experimental coding values)

-Byte 19, Bit 0-3 (00 FLA_Additional_High_Beam,no_Additional_High_Beam

-Byte 19, Bit 4-7 (20 FLA_Headinglight_Type,LED)
-Byte 21, Bit 5-7 (20AFS_coding_Light_Assist,High_Beam_Assist)

Byte 19, Bit 0-3 means the bits 0, 1, 2 & 3 as a whole, which can have any value between 0 & F i.e. 00, 01, 02,... 0D, 0E, 0F

 

Byte 19, Bit 4-7 means the bits 4,5,6 & 7 as a whole, which can have the values x0 where x can be between 0 & F i.e. 00, 10, 20,30,... D0, E0, F0

 

Byte 21, Bit 5-7 means the bits 5,6 & 7 as a whole, which can have the values 0x when x can be any EVEN number between 0 & F i.e. 00, 20, 40, C0, E0