Audi RMC: Coding, Adaptation, Datasets

Figuring out how Audi RMC system is configurable by testing coding, adaptation, datasets, and BAP.
This type of infotainment unit is poorly documented. I hope this is about to be changed.
My research is based on a 2012 Audi Q3 equipped with Audi RMC2 non-navigation unit and some parameterization files that I got from community and found over the internet.

How to tell which RMC system I have?

There are different versions of the RMC system, nav and non-nav, with 6.5" and 7" displays, pre-facelift and facelift.
Distinguish RMC from MMI: enter Red Engineering Menu and check what's your SW Train. Audi RMC system firmware starts with rmc, MMI starts with bbt, bnav, hnav. Check this: https://youtu.be/R2mUmxFPWBQ
~~RMC2 and RMC4~~ RMC and MMI units are using different dataset addresses.
part # 4G0/8X0 = H5x = RMC2; part # 4G1/8X1 = H6x = RMC4.
There's also H4x option available. Not sure what it exactly is. Maybe old RMC (RMC1)?
RMC is usually available at address 0x5F - infotainment. But in some cases at 0x56 - radio.

`RMC2` and `RMC4` coding

My findings

...both confirmed and anticipated.

Byte 00
- bit 0 - Coding confirmation (1=coded)
Byte 01
- bit 0 - Steering Wheel (0=LHD; 1=RHD)
Byte 02
- bits 0-3 - Car Body (0000=sedan; 0001=avant; 0100=sportback, 0101=allroad; 0110=SUV)
Byte 03
- bits 0-1 - Boot screen (00=default; 01=S-Line; 10=S; 11=RS)
Byte 04
- bits 0-1 - Car Model (00=A1; 01=A6/A7; 10=Q3)
Byte 05
- bit 0 - Air Condition (1=installed)
- bit 6 - Tire Pressure Monitoring System (1=installed)
- bit 7 - Ambient Illumination (1=installed)
Byte 06
- bit 1 - Parking Sensors (1=installed)
- bit 2 - Rear View Camera (1=installed)
- bit 3 - Rain Sensor (1=installed)
- bit 4 - Central Lock (1=installed)
- bit 5 - Rear Blind (1=installed)
- bit 6 - Gear Recommendation / Speed Warning (1=installed)
Byte 07
- bit 6 - Comfort Seats (1=installed)
Byte 08
- bit 0 - Lane Assist (1=installed)
- bit 1 - Side Assist (1=installed)
- bit 3 - Pause Recommendation (1=enabled)
Byte 09
- bit 4 - Tow bar (1=installed)
Byte 12
- bits 0-1 - Radio Antenna (01=A6/A7 specific; 02=with Sirius; 03=A1/Q3 specific)
Byte 14
- bit 0 - Sound System (0=Internal; 1=External)

To investigate

Byte 05:bit 5 OR Byte 07:bit 5 Something A6 Allroad related (Air Suspension? OR Tilt Display?)
Byte 08
- bit 6 - Reverse Seatbelt Tensioner (RGS)? (1=installed)
Byte 10
- bit 1 - APS/RVC (1=installed)
- bit 2 - ??? (0=A1/Q3; 1=A6/A7)
Byte 11
- bit 0 - Mic drivers side? (1=installed)
- bit 1 - Mic passengers side? (1=installed)
Byte 16
- bit 0 - Looks like GPS related (100% accuracy in A1/Q3, not so good match in A6/A7)

`RMC2` and `RMC4` Adaptation

...both confirmed and anticipated.

005 - developer mode (0=off; 1=on)
009 - bluetooth (0=off; 1=on)
023 - display test pattern (0=off; 1=on)
034 - Door speaker channel test
035 - Voice Command test
058 - Speakers test (0=off; 1=on)

`RMC` and `MMI 3G/3G+` Datasets

Audi RMC and MMI 3G/3G+ features and settings (confirmed, anticipated, and unknown).

Function	`RMC` address	`MMI` address
Config: MOST	N/A	`0xF00000`
Config: General system settings	`0xF00000`	`0xF00100`
Config: Hands-Free Profile (HFP)	`0xF00100`	N/A
Config: BlueTooth (BT)	`0xF00200`	N/A
Config: Telephone	`0xF00300`	N/A
Config: NAD, HFP, BT	N/A	`0xF00300`
Config: Vehicle platform	`0xF00400`	`0xF00500`
Config: Speech Dialog System (SDS)	`0xF01300`	---
Config: DTCP	N/A	`0xF02300`
Config: Default Body Coordinates	N/A	`0xF03400`
Config: Bus assignment	`0xF00800`	`0xF03600`
Config: WLAN	N/A	`0xF03A00`
Config: UMTS	N/A	`0xF03C00`
CarMenu: Active Cruise Control (ACC)	`0xF00500`	`0xF00600`
CarMenu: Interior lights (ambient illumination)	`0xF00510`	`0xF00610`
CarMenu: Audi Parking System / Rear View Camera (APS/RVC)	`0xF00520`	`0xF00620`
CarMenu: Braking Way Reduction (AWV)	`0xF00530`	`0xF00630`
CarMenu: Lane departure warning (LDW/HCA)	`0xF00540`	`0xF00640`
CarMenu: Lane Change Assist (SWA)	`0xF00550`	`0xF00650`
CarMenu: Exterior Lights (CH/LH/DRL)	`0xF00560`	`0xF00660`
CarMenu: Battery level	`0xF00570`	`0xF00670`
CarMenu: Windows	`0xF00580`	`0xF00680`
CarMenu: Air Condition (AC)	`0xF00590`	`0xF00690`
CarMenu: On-board Computer (TripComputer/Kombi)	`0xF005A0`	`0xF006A0`
CarMenu: Tyre Pressure Monitoring System (TPMS/RDK)	`0xF005B0`	`0xF006B0`
CarMenu: Wiper Service Position + Rain Sensor	`0xF005C0`	`0xF006C0`
CarMenu: Service Intervals (SIA)	`0xF005D0`	`0xF006D0`
CarMenu: Comfort Seats (memory)	`0xF005E0`	`0xF006E0`
CarMenu: Central Lock	`0xF005F0`	`0xF006F0`
CarMenu: Compass	`0xF00600`	`0xF00700`
CarMenu: Audi Drive Select (ADS/Charisma)	`0xF00610`	`0xF00710`
CarMenu: Oil Level	`0xF00620`	`0xF00720`
CarMenu: VIN + Keys learned	`0xF00630`	N/A
CarMenu: VIN	N/A	`0xF00730`
CarMenu: Keys learned	N/A	`0xF00840`
CarMenu: Clock	`0xF00640`	`0xF00740`
CarMenu: Air Suspension	`0xF00650`	`0xF00750`
CarMenu: Head-Up Display (HUD)	`0xF00660`	`0xF00760`
CarMenu: ZEM (Central Unit settings)	`0xF00670`	`0xF00770`
CarMenu: Hybrid	`0xF00680`	`0xF00780`
CarMenu: On-board manual	N/A	`0xF00790`
CarMenu: Stand heating / Aux heater (Webasto?)	`0xF00690`	`0xF007F0`
CarMenu: Universal Garage Door Opener (HomeLink/UGDO)	`0xF006A0`	`0xF007A0`
CarMenu: Sideview Camera	`0xF006B0`	`0xF007C0`
CarMenu: Night Vision	`0xF006C0`	`0xF007B0`
CarMenu: Reverse Seatbelt Tensioner (RGS)	`0xF006D0`	`0xF007D0`
CarMenu: Driving School Mode (DSM)	`0xF006E0`	---
CarMenu: Custom button MFSW (Joker)	`0xF006F0`	`0xF007E0`
CarMenu: Daylight Saving Time	`0xF00700`	`0xF03500`
CarMenu: Tilt Angle display (Offroad display)	`0xF00710`	`0xF00850`
CarMenu: Traffic Sign Recognition (VZE)	N/A	`0xF00810`
CarMenu: Rear Seat Entertainmant (RSE)	N/A	`0xF00820`
CarMenu: Weariness recognition (MKE)	`0xF00720`	`0xF00830`
Media: Audi Music Interface (AMI) and USB	`0xF00A00`	N/A
Media: AMI BT (A2DP audio streaming)	`0xF00B00`	N/A
Media: Analog Audio (AUX input)	`0xF00C00`	N/A
Media: Import (coping and ripping)	N/A	`0xF00400`
Media: AMI, A2DP, AUX	N/A	`0xF01000`
Audio: Speakers diagnostics (8RX, 9VD, OFF)	`0xF01500`	unknown
Audio: Sound parameters (8RX, 9VD, External)	`0xF01600`	unknown
Audio: Speakers configuration (8RX, 9VD, External)	`0xF02500`	unknown
Audio: Input gain offset	---	`0xF03B00`
Regional: default units	`0xF00900`	`0xF00800`
Regional: speed limits (VIM)	`0xF00D00`	`0xF01100`
Regional: system language	`0xF00F00`	`0xF03000`
Regional: visible languages	`0xF01100`	`0xF03100`
Regional: country setting	---	`0xF03700`
Regional: emergency number	---	`0xF03800`
Navigation activation code (FEC/FSC)	`0xF01400`	`0xF10000`

Checksums

Last 2 bytes is checksum. It's generated with CRC16-CCITT(FALSE).
Example: 3 bytes 00 E1 F0 contain value 00 and checksum E1 F0.

Example function activation - parameterization with OBDeleven for Android

Demo https://youtu.be/jsi80Yr3aoY

`RMC` Live Data Channels

Channel	Data1	Data2	Data3	Data4
016	CD drive temp.	???	Cooling fan RPM	N/A
019	Up time	???	???	???

BAP

Features available via RMC/MMI interface that are implemented in other modules. Information about those features and some of the settings are send to RMC/MMI via BAP protocol.
Example: coding for daytime running lights switch is done in module 0x09 but the switch will appear in RMC/MMI menu (which is separate module).

GEM - Green Engineering Menu

Usage

Requires developer mode to be enabled first (check adaptation above).
Enter GEM with key combination: [CAR] + [MENU]
Demo: https://youtu.be/jGcJXQZLzEc

Custom GEM screens

coming soon...

REM - Red Engineering Menu

Enter REM with key combination: [CAR] + [BACK]
Demo: https://youtu.be/PRefnQfClug

System reboot

Enter it with key combination: [BACK] + [Control Wheel] + [Upper-Right]
Demo: https://youtu.be/KxOsZpEe3cY

Display screenshot

Make sure there's an SD card inserted and it's not write protected.
Press and hold buttons [<] and [>].
Wait for LED confirmation on the control panel.
Demo: https://youtu.be/ASmqbM54rZk

RMC filesystem access