Electrical Function Diagram For Manual Or Automatic Emergency Call Function - PE82.95-P-2066-97FBF
Model 253 (except 253.99) as of model year 2020 with code 351 (eCall emergency call system)
| Code: | Designation: | Position: |
| 1 | Circuit 15, status | 49G |
| 10 | Voice input, signal | 17K |
| 11 | Voice output, signal | 50L |
| 11 | Voice output, signal | 56K |
| 12 | Steering wheel angle sensor, signal | 50G |
| 12 | Steering wheel angle sensor, signal | 32F |
| 12 | Steering wheel angle sensor, signal | 26D |
| 13 | Manual emergency call, signal | 37E |
| 13 | Manual emergency call, signal | 50G |
| 14 | Telephone, signal | 59F |
| 14 | Telephone, signal | 55F |
| 14 | Telephone, signal | 55B |
| 14 | Telephone, signal | 35L |
| 15 | GPS, signal | 50K |
| 15 | GPS, signal | 21L |
| 16 | Switch-on request, signal | 14H |
| 17 | Status indication, signal | 21F |
| 17 | Status indication, signal | 50G |
| 17 | Status indication, signal | 41D |
| 17 | Status indication, signal | 38F |
| 18 | Check signal, signal | 47K |
| 18 | Check signal, signal | 49H |
| 18 | Check signal, signal | 59G |
| 18 | Check signal, signal | 55F |
| 18 | Check signal, signal | 55C |
| 18 | Check signal, signal | 39C |
| 18 | Check signal, signal | 38L |
| 18 | Check signal, signal | 16K |
| 19 | Position data, signal | 56C |
| 19 | Position data, signal | 56F |
| 19 | Position data, signal | 60G |
| 2 | Readiness, signal | 49G |
| 2 | Readiness, signal | 37D |
| 2 | Readiness, signal | 50A |
| 20 | Instrument cluster, message | 32C |
| 3 | Crash, signal | 49G |
| 3 | Crash, signal | 37D |
| 3 | Crash, signal | 50A |
| 4 | Yaw rate, signal | 50G |
| 4 | Yaw rate, signal | 14F |
| 5 | Audio/COMAND display, message | 14F |
| 6 | Multifunction steering wheel button group, signal | 27A |
| 6 | Multifunction steering wheel button group, signal | 27C |
| 6 | Multifunction steering wheel button group, signal | 32E |
| 6 | Multifunction steering wheel button group, signal | 50G |
| 7 | Operation, signal | 7D |
| 7 | Operation, signal | 16E |
| 7 | Operation, signal | 48G |
| 7 | Operation, signal | 32G |
| 8 | Wheel speed, signal | 35D |
| 8 | Wheel speed, signal | 49G |
| 9 | Mute function, signal | 21L |
| 9 | Mute function, signal | 48H |
| A1 | Instrument cluster | 32A |
| A105 | Touchpad | 9C |
| A2/102 | Left telephone antenna | 60F |
| A2/103 | Right telephone antenna | 60G |
| A2/109 | Telephone antenna splitter | 57F |
| A2/23 | GPS antenna | 42K |
| A2/52 | Emergency call system antenna | 56C |
| A26/17 | Head unit | 18H |
| A40/8 | Audio/COMAND display | 13F |
| B25/20 | Driver hands-free system microphone | 14K |
| CAN A | Telematics CAN | 15G |
| CAN A | Telematics CAN | 15D |
| CAN B | Interior CAN | 39D |
| CAN D | Diagnostic CAN | 49F |
| CAN D | Diagnostic CAN | 39F |
| CAN HMI | User interface CAN | 38D |
| CAN HMI | User interface CAN | 26F |
| CAN HMI | User interface CAN | 32D |
| CAN LR | Steering wheel CAN | 28C |
| Code 810 | Sound system | 45G |
| Flex E | Chassis FlexRay | 30D |
| Flex E | Chassis FlexRay | 35D |
| H4/27 | Center instrument panel speaker | 57K |
| HSVL | High-speed video link | 15G |
| LIN A3 | LCP LIN | 5D |
| LIN E2 | Seat occupied recognition LIN | 44A |
| N112/9 | HERMES control unit | 52F |
| N135 | Steering wheel electronics | 28B |
| N2/10 | Supplemental restraint system control unit | 38A |
| N30/4 | Electronic Stability Program control unit | 35A |
| N40/3 | Sound system amplifier control unit | 47G |
| N49 | Steering wheel angle sensor | 23D |
| N70 | Overhead control panel control unit | 41D |
| N70s11 | SOS button | 42B |
| N72/4 | Left lower control panel | 3F |
| N72/4s7 | Volume control button | 2F |
| N72/5 | Right lower control panel | 4F |
| N72/5s1 | Volume adjustment button | 6F |
| N73 | Electronic ignition switch control unit | 35E |
| N80 | Steering column module control unit | 28D |
| S163/2 | Head unit multifunction steering wheel button group | 25A |
| S163/2s15 | Accept/terminate phone call switch | 25A |
| S163/2s16 | Volume adjustment switch | 25A |
| U24 | Valid for manual transmission | 1E |
| U25 | Valid for automatic transmission | 4E |