Legend of electrical function schematic, on-board electrical system control - PE54.10-P-2052-60RAA
Model 251 as of model year 09/YoM 08
| Code | Designation | Coordinates |
|---|---|---|
| A2 | Radio | 30C |
| A2/56 | Radio and navigation unit | 30E |
| A6n1 | STH control unit | 21J |
| A8/1 | Transmitter key | 7K |
| A40/3 | COMAND operating, display and controller unit | 30H |
| A40/4 | DVD player | 18J |
| A76 | Left front reversible emergency tensioning retractor | 7C |
| A76/1 | Right front reversible emergency tensioning retractor | 7C |
| Code 220 | PARKTRONIC (PTS) | 22A |
| Code 228 | Stationary heater | 19J |
| Code 242 | Electrically adjustable front passenger seat with memory function | 14A |
| Code 275 | Memory function (driver seat, steering column, outside mirror) | 14A |
| Code 299 | PRE-SAFE® | 5A |
| Code 401 | Front comfort seats, incl. seat heating and seat ventilation | 17A |
| Code 443 | Heated steering wheel | 17A |
| Code 510 | Audio 20 with CD changer | 28C |
| Code 511 | Audio 50 APS incl. DVD changer | 28E |
| Code 512 | COMAND APS with DVD changer | 28H |
| Code 523 | Audio 20 radio | 28C |
| Code 525 | Audio 50 APSradio (CD) | 28E |
| Code 527 | COMAND APS (with navigation) | 28H |
| Code 528 | HIGH Class USA | 28H |
| Code 528 | HIGH Class USA | 29H |
| Code 529 | HIGH Class Japan | 28H |
| Code 529 | HIGH Class Japan | 29H |
| Code 581 | Convenience automatic air conditioning | 14J |
| Code 864 | Rear entertainment system | 17J |
| Code 873 | Right and left front seat heaters | 17B |
| Code 890 | Automatic rear-end door | 19A |
| G2 | Generator | 2B |
| N3/9 | CDI control unit | 2E |
| N3/10 | ME-SFI [ME] control unit | 2H |
| N10 | Front SAM control unit | 12J |
| N10/8 | Rear SAM control unit | 26J |
| N22 | AAC [KLA] control and operating unit | 15K |
| N22/7 | Comfort AAC [KLA] control and operating unit | 15K |
| N25/7 | HS [SIH], seat ventilation and steering wheel heater control unit | 18B |
| N32/1 | Driver front seat adjustment control unit with memory | 15B |
| N32/2 | Front passenger front seat adjustment control unit with memory | 15B |
| N62 | PTS control unit | 24B |
| N69/1 | Door control module front left | 12B |
| N69/2 | Door control module front right | 12B |
| N70 | Overhead control panel control unit | 24J |
| N73 | EIS [EZS] control unit | 6J |
| N80 | Steering column module | 9B |
| N93 | Central gateway control unit | 9F |
| N121/1 | Rear-end door closing control module | 21B |
| U74 | Valid for diesel engines | 1D |
| U75 | Valid for gasoline engines | 1H |
| CAN B | Interior CAN | 9K |
| CAN B | Interior CAN | 13F |
| CAN B | Interior CAN | 20F |
| CAN B | Interior CAN | 25F |
| CAN C | Engine compartment CAN | 5J |
| CAN C | Engine compartment CAN | 6E |
| CAN C | Engine compartment CAN | 6G |
| CAN C | Engine compartment CAN | 9E |
| LIN C1 | Drive train LIN | 4E |
| 1 | Circuit 15, status | 10L |
| 2 | Circuit 61, status | 4F |
| 2 | Circuit 61, status | 7G |
| 2 | Circuit 61, status | 10J |
| 3 | Consumer shutoff, request | 4G |
| 3 | Consumer shutoff, request | 4J |
| 3 | Consumer shutoff, request | 6D |
| 3 | Consumer shutoff, request | 8L |
| 3 | Consumer shutoff, request | 9D |
| 3 | Consumer shutoff, request | 9G |
| 3 | Consumer shutoff, request | 12D |
| 3 | Consumer shutoff, request | 15D |
| 3 | Consumer shutoff, request | 15H |
| 3 | Consumer shutoff, request | 18D |
| 3 | Consumer shutoff, request | 18H |
| 3 | Consumer shutoff, request | 21D |
| 3 | Consumer shutoff, request | 21H |
| 3 | Consumer shutoff, request | 24D |
| 3 | Consumer shutoff, request | 24H |
| 3 | Consumer shutoff, request | 27H |
| 3 | Consumer shutoff, request | 28G |