Couldn't find anything on this forum, so here are a list of confirmed to be working mods via VCDS or OBD11 long-coding/one-click-apps.
I'll update as I continue to test.
Confirmed on 2021 C8 A6 (Premium Plus w/o HD Matrix)
Gear Display: D off/S on works, however when I tried D on/S on it did not work for me.
Seat Heating Balancing: Works as intended, car must be equipped with existing functionality.
Seat Ventilation Balancing: Works as intended, car must be equipped with existing functionality.
Air Recirculation Memory: Works as intended.
Seat Belt Warning: Works as intended.
Needle Sweep: Works as intended.
Comfort Turn Signal: Works as intended.
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Some notable apps that did NOT work are the RS taillight animation. In order to get it to work, you need to have a car equipped with HD Matrix lighting. Another one that bricked the MMI was the screen startup logo. Set it to Audi Sport and it bricked.
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Shout out to Homer1946 from AudiWorld for his confirmed list on a 2021 C8 A6 Prestige.
All VAG Mods for C8 A6:
1. Needle Sweep in Virtual Cockpit - Confirmed
a. Select Control Module
b. 17 – Instruments
c. Coding – 07
d. Long Coding Helper
e. Byte 1, Check Bit 0 “Staging, Yes” (Not sure why it’s labelled this way, but it does enable the needle sweep)
f. Exit Long Coding Helper
g. Click “Do It!”
2. Display transmission gear for "D" and "S" drive modes - Confirmed
a. Select Control Module
b. 02-Auto Trans
c. Adaptation – 10
d. Chanel IDE04111-Single Gear Display
e. Select from New Value drop-down “D on/S on”
f. Click “Do it!”
3. Change Parking Assist Speed Threshold - Confirmed (on ‘21 Prestige)
a. Select Control Module
b. A5-Frt Sens. Dry. Assist
c. Adaptation – 10
d. Chanel IDE03782-Switch-off speed for parking assist
e. Select from New Value drop-down in km/h (default 10 km/h)
f. Click “Do it
4. Double Beep When Unlocking Doors- Confirmed
Description: Enable audible double beep when unlocking the car
a. Select Control Module
b. 46-Central Conv
c. Adaptation – 10
d. sounder_settings_beeptime_opening_central_locking
e. Change from "no_beep" to "double_beep"
f. Click “Do it!”
g. central_locking_system-beep_at_opening
h. Set to “On”
i. Click “Do it!”
5. DRL (Daytime Running Lights) turn Off when vehicle is in Park with EPB applied - Confirmed
a. Select Control Module
b. 09-Cent. Elect.
c. Coding – 07
d. Long Coding Helper
e. Byte 2, Check Bit 2 “drl_break,active”
f. Exit Long Coding Helper
g. Click “Do It!”
6. Seat Symmetry + Passenger Seat Control Using Driver Seat Controls - Confirmed.
a. Select Control Module
b. 06–Seat Mem. Pass. and 36-Seat Mem. Drvr.
c. Coding – 07
d. Long Coding Helper
e. Byte 2, Check Bit 5 “seat_symmetry_movement.0=not active / 1=active”
f. Byte 6, Check Bit 1 “passenger_seat_adjustment_by_driver_seat,0=n ot active / 1 active”
g. Exit Long Coding Helper
h. Click “Do It!”
7. Enable Ability to lock car with Engine running – Confirmed (Warning: With engine running, vehicle can be locked using the door handle or key fob. To unlock the vehicle, the key fob Unlock button must be used.)
a. Select Control Module
b. 46–Central Conv.
c. Coding – 07
d. Long Coding Helper
e. Byte 9, Check Bit 7 “central_locking_system_lock_unlock_at_engine_runn ing,0=not active / 1 active”
f. Exit Long Coding Helper
g. Click “Do It!”
8. Enable Lap Timer - Confirmed
a. Select Control Module
b. 17 – Instruments
c. Coding – 07
d. Long Coding Helper
e. Byte 1, Check Bit 3 “Lap counter, Yes”
f. Exit Long Coding Helper
g. Click “Do It!”
9. Daytime Running Lights (DRL) On/Off setting in MMI - Confirmed
a. Select Control Module
b. 09-Cent. Elect.
c. Coding – 07
d. Long Coding Helper
e. Byte 2, Check Bit 1 “drl_mmi,active”
f. Exit Long Coding Helper
g. Click “Do It!”
10. Automatic Lock On/Off setting in MMI - Confirmed
a. Select Control Module
b. 46-Central Conv.
c. Coding – 07
d. Long Coding Helper
e. Byte 35, Uncheck Bit 0 “automatic_lock_not_at_mmi,0=not active / 1=active”
f. Exit Long Coding Helper
g. Click “Do It!”
11. Increase Range of Comfort Open/Close with Key - Confirmed on 2021 Prestige
a. Select Control Module
b. 46-Central Conv
c. Coding – 07
d. Long Coding Helper
e. Byte 13, Uncheck Bit 0 “comfort_operation_range_limitation,0=not active / 1 active”
f. Exit Long Coding Helper
g. Click “Do It!”
12. Activate RS style taillight animation - Confirmed for Prestige (might require taillights already capable of some animation)
a. Select Control Module
b. 46-Central Conv
c. Coding – 07
d. Long Coding Helper
e. Byte 37, check Bit 4 to change from 0 to 1 - name might be blank or “INFO: SSBR_Variante”
f. Exit Long Coding Helper
g. Click “Do It!”
13. Adaptive Brake Lights (Emergency Brake Light Flash) - Confirmed? (Changes made but difficult to test)
Description: During emergency braking scenario (e.g. ABS braking), brake lights will strobe. This coding only applies to US-spec vehicles; this is already coded by default for EU- and Canadian-spec vehicles. Example here .
a. Select Control Module
b. 46-Central Conv
c. Coding – 07
d. Long Coding Helper
e. Byte 21
f. check Bit 0 “emergency_brake_indication,0=not active / 1 active”
g. check Bit 2 “emergency_flashing_via_acc,0=not active / 1 active” -(only modify if vehicle is equipped with radar cruise)
h. check Bit 3 “emergency_flashing_precrash,0=not active / 1 active”
i. Exit Long Coding Helper
j. Click “Do It!”
14. Unblock blocked-while-driving functions- Done. Waiting to confirm.
Description: The nhtsa adaptations allow a certain number or additional android auto or carplay screens. Much of those are controlled by the calculated speed on the phone. The MMI screens can all be fixed with the below instructions (VCDS). No adverse effects so far. Allow all screens while car is moving:
You MUST open the hood to bypass the firewall prior to opening the controller. If you fail to do this you must completely power down the car (and wait for that to happen) before you can try again.
a. Select Control Module
b. 5F-Information Electr
c. Adaptation-10
d. Starting at Channel IDE11502-FB_CAR_0, change anything ‘blocked’ to ‘non_blocked’
e. Starting at Channel ENG167428-nhtsa_properties-limitation_dependency, change all android and apple to ‘non_blocked’
f. There is also some blocks at “_FB_MISC_” - unknown effect
g. Click “Do It!”
15. Adjust Consumption in DIS - Not confirmed
Description. This allows you to calculate your own mileage based on the pump and your odometer and then correct the DIS reading.
a. Select Control Module
b. 17 - Instruments
c. Adaptation - 10
d. Channel 1B “Display conversions of consumptions and operating ranges”
e. Change 100 to xxx (see samples below)
f. Click “Do it!”
Sample 1 - Calculation based on volume per distance (e.g. l/100km):
DIS: 9,3 l/100 km.
Real: 9,8 l/100 km. (100 * 9,8 / 9,3 = 105,38)
Channel 1B will be changed from 100 to 105
Sample 2 - Calculation based on distance per volume (e.g. MPG):
DIS: 23 MPG.
Real: 24 MPG. (100 * 23 / 24 = 95,83)
Channel 1B will be changed from 100 to 96
Applied to My Car so far (2021 C8 A6):
1. Needle Sweep in Virtual Cockpit - Confirmed
2. Display transmission gear for "D" and "S" drive modes - Confirmed
11. Increase Range of Comfort Open/Close with Key - Confirmed
12. Activate RS style taillight animation - Confirmed for Prestige (might require taillights already capable of some animation)
3. Change Parking Assist Speed Threshold - Confirmed
Change the speed to 20 kmh (from the default of 10)
4. Double Beep When Unlocking Doors - Confirmed
13. Adaptive Brake Lights (Emergency Brake Light Flash) - Confirmed? (Changes made but difficult to test)
14. Unblock blocked-while-driving functions - Done. Waiting to confirm.
Channels I changed to “unblocked” on my 2021 A6 Prestige (US).
FB_CAR_ 10
FB_CAR_ 12
FB_CAR_ 17
FB_CAR_ 18
FB_CAR_ 2
FB_CAR_ 6
-nhtsa_properties-nhtsa_limitations_switches_for_carplay_no_softkeyb oard
FB_MISC_10
FB_MISC 11
FB_MISC 13
FB_MISC 15
FB_MISC 17
FB_MISC 18
FB_MISC 2
FB_MISC 23
FB_MISC 25
FB_MISC 26
FB_MISC 28
FB_MISC 3
FB_MISC 30
FB_MISC 4
FB_MISC 5
FB_MISC 6
FB_MISC 7
FB_MISC 8
FB_MISC 9
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Originally Posted by aquarian
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