Wiring Diagram Of Head Unit - PE82.85-P-2110-97DCA
Model 238 up to model year 2021 with code 531 (COMAND APS) except code 520 (Audio 20 USB) except code 522 (Audio 20 radio) Control unit A26/17
| Code: | Designation: | Position: |
|---|---|---|
| AO | Use of wiring diagrams | 159L |
| A1 | Instrument cluster | 63L |
| A104/2 | AM amplifier with selection switch | 110L |
| A2/105 | SDARS antenna | 93L |
| A2/108 | FM 2, DAB and TV antenna amplifier | 100L |
| A2/155 | Telephone and Remote Park-Pilot/stationary heater antenna changeover switch | 7L |
| A2/18 | FM, AM, CL, DAB and KEYLESS-GO antenna amplifier | 107L |
| A2/23 | GPS antenna | 99L |
| A2/37 | Vehicle Information and Communication System (VICS) control unit | 40L |
| A2/83 | WLAN antenna | 58L |
| A2/91 | Bluetooth® antenna | 60L |
| A2/94 | DSRC antenna | 37L |
| A26/17 | Head unit | 4A |
| A26/17 | Head unit | 12A |
| A26/17 | Head unit | 20A |
| A26/17 | Head unit | 28A |
| A26/17 | Head unit | 36A |
| A26/17 | Head unit | 44A |
| A26/17 | Head unit | 53A |
| A26/17 | Head unit | 60A |
| A26/17 | Head unit | 68A |
| A26/17 | Head unit | 76A |
| A26/17 | Head unit | 85A |
| A26/17 | Head unit | 92A |
| A26/17 | Head unit | 101A |
| A26/17 | Head unit | 110A |
| A26/17 | Head unit | 117A |
| A26/17 | Head unit | 125A |
| A26/17 | Head unit | 133A |
| A26/17 | Head unit | 143A |
| A26/17f1 | Electrical fuse, head unit | 10B |
| A28/15 | Cellular telephone system antenna amplifier/compensator | 12L |
| A40/8 | Audio/COMAND display | 67L |
| A50/6 | Dedicated Short-Range Communications control unit | 29L |
| A90/5 | Multimedia connection unit | 139L |
| A90/5x1 | USB connector 1 | 138L |
| A90/5x2 | USB connector 2 | 141L |
| B25/20 | Driver hands-free system microphone | 51L |
| B25/21 | Front passenger hands-free system microphone | 52L |
| CAN A | Telematics CAN | 55K |
| CAN 11 | User interface CAN | 116K |
| Code 228 | Stationary heater | 6G |
| Code 360 | HERMES UMTS | 41D |
| Code 362 | HERMES LTE | 41E |
| Code 379 | Telephone module with Bluetooth® (SAP profile) | 10G |
| Code 386 | Comfort telephony | 10G |
| Code 386 | Comfort telephony | 10G |
| Code 464 | Digital instrument cluster full display | 118D |
| Code 498 | Japan version | 19E |
| Code 503 | Pre-installation for Remote Parking Pilot | 6H |
| Code 506 | Audio 20 NTG 5.5 radio | 8A |
| Code 506 | Audio 20 NTG 5.5 radio | - |
| Code 531 | COMAND APS | 19D |
| Code 531 | COMAND APS | 8A |
| Code 531 | COMAND APS | 61D |
| Code 531 | COMAND APS | - |
| Code 810 | Sound system | 46E |
| Code 810 | Sound system | 73D |
| Code 810 | Sound system | 87E |
| Code 810 | Sound system | 87E |
| Code 811 | Advanced sound system | 46E |
| Code 811 | Advanced sound system | 73E |
| Code 811 | Advanced sound system | 87F |
| Code 811 | Advanced sound system | 87E |
| Code 896 | Vehicle access and drive authorization via mobile phone | 14G |
| Code 896 | Vehicle access and drive authorization via mobile phone | 143E |
| Code 897 | Wireless mobile phone charging | 14G |
| Code 897 | Wireless mobile phone charging | 143D |
| Code 899 | Wireless phone charging at front and antenna | 10H |
| Code 899 | Wireless phone charging at front and antenna | 14G |
| Code B63 | Sporty engine sound | 73E |
| Code B63 | Sporty engine sound | 87D |
| Code FA | CABRIOLET | 6H |
| Code FA | CABRIOLET | 6G |
| Code FA | CABRIOLET | 106D |
| Code L | LEFT-HAND DRIVE | 28G |
| Code L | LEFT-HAND DRIVE | 49D |
| Code L | LEFT-HAND DRIVE | 73F |
| Code L | LEFT-HAND DRIVE | 84H |
| Code L | LEFT-HAND DRIVE | 126F |
| Code R | RIGHT-HAND DRIVE | 28G |
| Code R | RIGHT-HAND DRIVE | 73F |
| Code R | RIGHT-HAND DRIVE | 49E |
| Code R | RIGHT-HAND DRIVE | 84H |
| Code R | RIGHT-HAND DRIVE | 126F |
| Code U21 | AMG Performance exhaust system | 73E |
| Code U21 | AMG Performance exhaust system | 87E |
| F1/3 | Passenger-side A-pillar fuse box | 3L |
| F1/3 | Passenger-side A-pillar fuse box | 134L |
| F1/3f313 | Fuse 313 | 133L |
| F1/3f317 | Fuse 317 | 2L |
| F11/1 | Cockpit fuse block | 24L |
| H4/1 | Left front door midrange speaker | 75L |
| H4/1 | Left front door midrange speaker | 78L |
| H4/2 | Right front door midrange speaker | 78L |
| H4/2 | Right front door midrange speaker | 75L |
| H4/3 | Left side paneling midrange speaker | 82L |
| H4/33 | Left front door tweeter | 76L |
| H4/33 | Left front door tweeter | 79L |
| H4/34 | Right front door tweeter | 79L |
| H4/34 | Right front door tweeter | 76L |
| H4/42 | Left front footwell woofer | 85L |
| H4/43 | Right front footwell woofer | 86L |
| K40/6 | Driver-side fuse and relay module | 21L |
| K40/6 | Driver-side fuse and relay module | 120L |
| K40/6 | Driver-side fuse and relay module | 151L |
| K40/6f204 | Fuse 204 | 20L |
| K40/6f206 | Fuse 206 | 150L |
| K40/6f208 | Fuse 208 | 119L |
| M4/12 | Digital instrument cluster full display fan motor | 124L |
| M4/12x1 | Head unit fan motor electrical connector | 123J |
| N10/6 | Front SAM control unit | 156L |
| N112/9 | HERMES control unit | 44L |
| N123/8 | Front mobile phone cradle control unit | 16L |
| N40/1 | Engine sound control unit | 90L |
| N62 | Parking system control unit | 96L |
| S69/6 | Antenna changeover limit switch | 113L |
| W12 | Left center console ground point | 2H |
| W34 | Left footwell ground point | 29G |
| W34 | Left footwell ground point | 127F |
| W34/3 | Right footwell ground point | 29G |
| W34/3 | Right footwell ground point | 127F |
| X11/4 | Diagnostic connector | 130L |
| X115/5 | Front center console USB connector | 146L |
| X18/54 | Passenger-side cockpit/frame floor assembly electrical connector | 123G |
| X237/1 | Mobile phone contact plate | 12L |
| X30/20 | User interface CAN (CAN HMD potential distributor electrical connector | 116L |
| X30/35 | Telematics CAN (CAN A) potential distributor electrical connector | 55L |
| X35/1 | Driver door electrical connector | 77G |
| X35/1 | Driver door electrical connector | 74G |
| X35/1 | Driver door electrical connector | 98G |
| X35/2 | Front passenger door electrical connector | 74G |
| X35/2 | Front passenger door electrical connector | 77G |
| X58/3 | Microphone electrical connector | 50G |
| Z14/2z1 | Microphone connector sleeve (-) | 52H |
| Z28/89z1 | Right front woofer connector sleeve (+) | 81G |
| Z28/90z1 | Right front woofer connector sleeve (-) | 82G |
| Z35/29z1 | Telephone wake-up signal connector sleeve | 12F |
| Z81/5z1 | Cockpit terminal 58d connector sleeve | 154D |