VCDS (VAG-COM) codes and programmable options for Golf Mk7

[AAARGH]

Hey guys, been lurking on here a while... searched but couldn't find the answers to these (got a MK7.5 R).

1. Active Cruise without lane keep assist

Has anyone programmed the ACCC to work without lane keep assist? If I disable lane keep assist, I can't use cruise control at all... (and it's annoying as hell!).

2. Auto Recirculate On

For auto air recirculation to 'on', the images in the below past aren't available... has anyone got the VCDS codes?
Air Recirculation - automate
Post #73

[yorky]

Hey guys, been lurking on here a while... searched but couldn't find the answers to these (got a MK7.5 R).

1. Active Cruise without lane keep assist

Has anyone programmed the ACCC to work without lane keep assist? If I disable lane keep assist, I can't use cruise control at all... (and it's annoying as hell!).

2. Auto Recirculate On

For auto air recirculation to 'on', the images in the below past aren't available... has anyone got the VCDS codes?
Air Recirculation - automate
Post #73

Interesting, my 7.5 wagon (not an R though) I've turned lane keep assist off a few times and still had active cruise available (I basically have it on 90% of the time). I turned lane keep off now and then because on a straight bit of road at 100k's it nags too often to move the wheel.

This is what I had noted for "store recirc setting":
Store recirc setting

Long coding

Control unit: 08 Air Conditioning
"Store recirculation air setting for terminal 15 off" = "Save" - Byte 04/Hex 41
From: Air condition setting memory | GOLFMK7 - VW GTI MKVII Forum / VW Golf R Forum / VW Golf MKVII Forum

[AAARGH]

Interesting, my 7.5 wagon (not an R though) I've turned lane keep assist off a few times and still had active cruise available (I basically have it on 90% of the time). I turned lane keep off now and then because on a straight bit of road at 100k's it nags too often to move the wheel.

This is what I had noted for "store recirc setting":
Store recirc setting

Long coding

Control unit: 08 Air Conditioning
"Store recirculation air setting for terminal 15 off" = "Save" - Byte 04/Hex 41
From: Air condition setting memory | GOLFMK7 - VW GTI MKVII Forum / VW Golf R Forum / VW Golf MKVII Forum

Thanks - I'll give it a go

[DV52]

Thanks - I'll give it a go

AAARGH: Hi and thanks for the PM.

Yes, you are correct that my link for the Air Circulation tweak on the MkVII VCDS Tweak - Reference thread no longer works because the pictures in the original link that OP used have now been removed.

With full attribution to yorky - I provide a different set of instructions for the coding change for this tweak

The reason for the my changed instructions for this tweak is because I do not believe that "Hex 41" in yorky post is correct ("Hex 41" originally came from the GOLFMK7 forum).

Here's why I suggest a different set of changes for this tweak:
First - my explanation below must necessarily involve the very strange form of mathematics called "Hexadecimal" and "Binary". I don't apologize for this because modules do NOT use decimal arithmetic. So, whenever 8 x digit Binary numbers are quoted below - remember that they are read from right-to-left. This means that Bit 0 is the right-most digit in a Binary number (and Bit 7 is the left-most digit)

On the long-code string for the 08 module, the upper-nibble (meaning Bit 4-7) for Byte 04 controls 2 x separate aspects of the Air circulation/recirculation function as shown in the VCDS screenshot below

Again as shown - for Bit 6-7, the Air Circulation Type can be either "Credit", or "Normal". AFAIK, mk7 Golfs in Australia use the latter type as factory set which. This means the default value is Hex 00 (i.e. Bit 6 =0, Bit 7 =0)



To activate this tweak Bit 4-5 must be changed to allow the Air recirculation to store the cycle setting. As shown below, this means that Bit 4-5 must have the value hex10 which is equivalent to Bit 4=1, Bit 5 =0



So, combining the two settings above - the change for this tweak is:

Air Recirculation: remember last setting
08 module

• If the factory setting for Byte 04 = Hex00=00000000, change to Hex10 = 00010000.
• If the factory setting for Byte 04 = Hex40=01000000, change to Hex50 = 01010000.

Or, simply - the tweak is: set Byte 04, Bit 4=1 on the 08 module

Don
PS: I will alter the link to this tweak in the reference thread to point to this post: