- 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
RMC2non-navigation unit and some parameterization files that I got from community and found over the internet.
- 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 withbbt,bnav,hnav. Check this: https://youtu.be/R2mUmxFPWBQ RMC2andRMC4RMCandMMIunits are using different dataset addresses.- part #
4G0/8X0=H5x=RMC2; part #4G1/8X1=H6x=RMC4. - There's also
H4xoption available. Not sure what it exactly is. Maybe oldRMC(RMC1)? - RMC is usually available at address
0x5F- infotainment. But in some cases at0x56- radio.
...both confirmed and anticipated.
Byte 00bit 0- Coding confirmation (1=coded)
Byte 01bit 0- Steering Wheel (0=LHD;1=RHD)
Byte 02bits 0-3- Car Body (0000=sedan;0001=avant;0100=sportback,0101=allroad;0110=SUV)
Byte 03bits 0-1- Boot screen (00=default;01=S-Line;10=S;11=RS)
Byte 04bits 0-1- Car Model (00=A1;01=A6/A7;10=Q3)
Byte 05bit 0- Air Condition (1=installed)bit 6- Tire Pressure Monitoring System (1=installed)bit 7- Ambient Illumination (1=installed)
Byte 06bit 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 07bit 6- Comfort Seats (1=installed)
Byte 08bit 0- Lane Assist (1=installed)bit 1- Side Assist (1=installed)bit 3- Pause Recommendation (1=enabled)
Byte 09bit 4- Tow bar (1=installed)
Byte 12bits 0-1- Radio Antenna (01=A6/A7 specific;02=with Sirius;03=A1/Q3 specific)
Byte 14bit 0- Sound System (0=Internal;1=External)
Byte 05:bit 5ORByte 07:bit 5Something A6 Allroad related (Air Suspension? OR Tilt Display?)Byte 08bit 6- Reverse Seatbelt Tensioner (RGS)? (1=installed)
Byte 10bit 1- APS/RVC (1=installed)bit 2- ??? (0=A1/Q3;1=A6/A7)
Byte 11bit 0- Mic drivers side? (1=installed)bit 1- Mic passengers side? (1=installed)
Byte 16bit 0- Looks like GPS related (100% accuracy in A1/Q3, not so good match in A6/A7)
...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 test035- Voice Command test058- Speakers test (0=off;1=on)
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 |
- Last 2 bytes is checksum. It's generated with CRC16-CCITT(FALSE).
- Example: 3 bytes
00 E1 F0contain value00and checksumE1 F0.
Example function activation - parameterization with OBDeleven for Android
| Channel | Data1 | Data2 | Data3 | Data4 |
|---|---|---|---|---|
| 016 | CD drive temp. | ??? | Cooling fan RPM | N/A |
| 019 | Up time | ??? | ??? | ??? |
- 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
0x09but the switch will appear in RMC/MMI menu (which is separate module).
- Requires developer mode to be enabled first (check adaptation above).
- Enter GEM with key combination: [CAR] + [MENU]
- Demo: https://youtu.be/jGcJXQZLzEc
coming soon...
- Enter REM with key combination: [CAR] + [BACK]
- Demo: https://youtu.be/PRefnQfClug
- Enter it with key combination: [BACK] + [Control Wheel] + [Upper-Right]
- Demo: https://youtu.be/KxOsZpEe3cY
- 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
coming soon...
- Huge thanks to everyone involved in this research!
- Equipment code search engine: http://prsearch.planetvag.com
- Checksum calculator: https://crccalc.com
- RMC2 vw RMC4, optional equipment reserach: https://www.drive2.ru/l/7508336/
- ASCII table: https://www.rapidtables.com/code/text/ascii-table.html
- OBDeleven diagnostic interface (ref link): http://mr-fix.info/redirect/obdeleven