TheMMI hidden menu on my current A6 needs to be enabled using VCDS before you can get into it. I would imagine it will be the same on the 4g. Audi A4 - B7 Forum - 2005 - 2008; Audi A4 - B8 Forum - 2008 - 2015; Audi A4 - B9 Forum - 2015 - A5 - S5 - RS5. Audi A5 - B8 Forum - 2007 - 2016; Audi A5 - B9 Forum - 2016-A6 - S6 - RS6. 2 It’s comfortable to drive. The Audi A4 is one of the most comfortable cars in its class. Its ride is smooth, and its cabin is well-insulated from outside noise due to using a good amount of sound-dampening material. The seats are supportive and comfortable, even on long drives. Theexhaust note. The Audi A4 S Line and the S4 have different exhaust notes, mainly caused by their engine size. As mentioned earlier, the A4 S Line has a smaller, four-cylinder engine, while the S4 has a six-cylinder engine. As a result, the Audi S4 produces a more profound, throatier sound that many people find more attractive. Pressand hold buttons SETUP and CAR. After couple of seconds hidden green menu will appear. You can now release the buttons. Navigate to DIAG SETTINGS → HU CODIERUNG → STANDBY-BILD. Choose one of 5 options available. 0 – standard MMI screen. 1 – Audi S6 logo. 2 – Audi S5 logo. 3 – Audi RS6 logo. 1. Michael Whitworth. AudiWorld Newcomer. Thread Starter. Join Date: Jun 2017. Posts: 8. Likes: 0. Received 0 Likes on 0 Posts. MMI Hidden Menu. I can't access Youcan tweak many things from this menu and it is also required for many other activations. AudiA4. A4 (B8 Platform) Discussion. ambient lighting; A4 (B8 Platform) Discussion Discussion forum for the B8 Audi A4 produced from 2008.5 There are two main steps that I know of: 1) enable the hidden menu, and 2) enable ambient lighting. Here's what I have from other sources. 1) enable hidden menu (stay away from SecretGreen Menu. I loaded the Carista Dongle and App. While I know many of the options are available to change in the MMI menu structure, I for one really like seeing all of the options in one place. I like it. I have a question for the forum regarding the Hidden Menu. I opened it up this afternoon, and to be honest, it scared the $*%^ out of me. SCXQHK3.