Networking, On-Board Electrical System - SN00.00-P-0080-12G
WARNING: This page does not describe the selected car, but rather 12 other vehicles, including the 2023 Mercedes-Benz CLA45 AMG, 2023 Mercedes-Benz CLA35 AMG, 2023 Mercedes-Benz CLA250, 2022 Mercedes-Benz CLA45 AMG, and 2022 Mercedes-Benz CLA35 AMG. However, it is still accessible from the selected car via links, so may be relevant.
Model 118.3
Networking
Shown on model 118.3
DRIVE TRAIN CAN (CAN C1)
| Control unit | Additional information | |
|---|---|---|
| A26/17 | Head unit | With CONNECT 20 ENTRY (code 547) or CONNECT 20 MID (code 548) or CONNECT 20 HIGH (code 549) |
| N3/9 | CDI control unit | with diesel engine |
| N3/10 | ME-SFI [ME] control unit | with gasoline engine |
| N15/13 | Double clutch transmission control unit | with transmission 700.4 and engine 282, 608 |
| N40/3 | Sound system amplifier control unit | With code 810 (Sound system) |
| N118 | Fuel pump control unit | - |
| N127 | Drivetrain control unit | - |
| Y3/14 | Dual clutch transmission fully integrated transmission control electrohydraulic controller unit | with transmission 724 |
DRIVE TRAIN SENSOR CAN (CAN I)
| Control unit | Additional information | |
|---|---|---|
| N3/9 | CDI control unit | with diesel engine |
| N37/7 | Control unit of NOx sensor upstream of SCR catalytic converter | with diesel engine |
| N37/8 | NOx sensor control unit downstream of SCR catalytic converter | with diesel engine except code 926 (Low-pollutant EURO4) |
| N74 | Soot particulate sensor control unit | with diesel engine |
| N118/5 | AdBlue® control unit | with diesel engine and code U79 (BlueTEC diesel exhaust gas cleaning (SCR) generation 3) |
USER INTERFACE CAN (CAN HMI)
| Control unit | Additional information | |
|---|---|---|
| A26/17 | Head unit | With CONNECT 20 ENTRY (code 547) or CONNECT 20 MID (code 548) or CONNECT 20 HIGH (code 549) |
| A40/12 | Head-up display | With CODE 463 (Head-up display) |
| A76 | Left front reversible emergency tensioning retractor | with CODE 299 (PRE-SAFE® system) |
| A76/1 | Right front reversible emergency tensioning retractor | with CODE 299 (PRE-SAFE® system) |
| B84/14 | Augmented reality camera | with code U19 (Augmented reality) |
| N2/10 | Supplemental restraint system control unit | - |
| N66/2 | Backup camera control unit | with code 218 (Reversing camera) except code 235 (Active Parking Assist with PARKTRONIC) |
| N73 | Electronic ignition switch control unit | - |
| N88 | Tire pressure monitor control unit | With code 475 (Tire pressure monitor) |
| N133/1 | Instrument cluster control unit | With CONNECT 20 ENTRY (code 547) or CONNECT 20 MID (code 548) or CONNECT 20 HIGH (code 549) |
| N166 | Head unit/instrument cluster control unit | CONNECT 5 (code 545) |
DIAGNOSTIC CAN (CAN D)
| Control unit | Additional information | |
|---|---|---|
| N73 | Electronic ignition switch control unit | - |
| N112/9 | HERMES control unit | With code 362 (HERMES LTE) |
VEHICLE DYNAMICS CAN (CAN H)
| Control unit | Additional information | |
|---|---|---|
| N2/10 | Supplemental restraint system control unit | - |
| N30/4 | Electronic Stability Program control unit | - |
INTERIOR CAN (CAN B)
| Control unit | Additional information | |
|---|---|---|
| N10 | Central control module | - |
| N28/1 | Trailer recognition control unit | With code 550 (Trailer hitch) |
| N32/1 | Driver seat control unit | with code 275 (Electrically adjustable driver's seat with memory function) |
| N32/2 | Front passenger seat control unit | with code 241 (Memory switch for left electrically adjustable front passenger seat) or code 242 (Electrically adjustable front passenger seat with memory function) |
| N32/15 | Driver multicontour seat control unit | with code 409 (Front left/right multicontour seats) |
| N32/16 | Front passenger multicontour seat control unit | with code 409 (Front left/right multicontour seats) |
| N69/1 | Driver door control unit | - |
| N69/2 | Front passenger door control unit | - |
| N70 | Overhead control panel control unit | With CODE 882 (Interior monitoring) |
| N70/1 | Panoramic sliding roof control unit | With code 413 (Panoramic sliding sunroof) |
| N73 | Electronic ignition switch control unit | - |
| N162 | Ambiance illumination control unit | With CODE 877 (Ambiance illumination) |
STEERING WHEEL CAN (CAN LR)
| Control unit | Additional information | |
|---|---|---|
| N80 | Steering column module control unit | - |
| N135 | Steering wheel electronics | - |
ENGINE CAN (CAN C)
| Control unit | Additional information | |
|---|---|---|
| N3/9 | CDI control unit | with diesel engine |
| N3/10 | ME-SFI [ME] control unit | with gasoline engine |
| N127 | Drivetrain control unit | - |
PERIPHERY CAN (CAN PER)
| Control unit | Additional information | |
|---|---|---|
| A40/11 | Mono multifunction camera | with code 243 (Active Lane Keeping Assist), code 513 (Traffic Sign Assist), Code 608 (Adaptive Highbeam Assist) or code 628 (Adaptive Highbeam Assist Plus), except code 51B (Euro NCAP) and except code 23P (Driving Assistance Package) |
| B92/6 | Right outer rear integrated radar sensor | With CODE 234 (Blind spot assist) |
| B92/11 | Left outer rear integrated radar sensor | With CODE 234 (Blind spot assist) |
| E1n9 | Left headlamp control unit | with code 631 (Static LED headlamps for left-hand traffic system) or code 632 (Static LED headlamps for right-hand traffic system) or code 640 (Dynamic LED headlamps, SAE, for right-hand traffic system) or code 641 (Dynamic LED headlamps for left-hand traffic system) or code 642 (Dynamic LED headlamps for right-hand traffic system) |
| E2n9 | Right headlamp control unit | with code 631 (Static LED headlamps for left-hand traffic system) or code 632 (Static LED headlamps for right-hand traffic system) or code 640 (Dynamic LED headlamps, SAE, for right-hand traffic system) or code 641 (Dynamic LED headlamps for left-hand traffic system) or code 642 (Dynamic LED headlamps for right-hand traffic system) |
| N73 | Electronic ignition switch control unit | - |
| N127 | Drivetrain control unit | - |
RADAR-CAN REAR (CAN S2)
| Control unit | Additional information | |
|---|---|---|
| B92/7 | Right outer rear radar sensor | With CODE 23P (Driving assistance package) |
| B92/10 | Left outer rear radar sensor | With CODE 23P (Driving assistance package) |
| N62/4 | Mercedes-Benz Intelligent Drive control unit | With CODE 23P (Driving assistance package) |
TELEMATICS CAN (CAN A)
| Control unit | Additional information | |
|---|---|---|
| A26/17 | Head unit | With CONNECT 20 ENTRY (code 547) or CONNECT 20 MID (code 548) or CONNECT 20 HIGH (code 549) |
| A40/16 | Head unit/instrument cluster display cluster | - |
| A105 | Touchpad | With code 446 (Touchpad only) |
| N123/8 | Mobile phone cradle control unit | with code 897 (Wireless mobile phone charging) or code 899 (Multifunction telephony) |
| N166 | Head unit/instrument cluster control unit | CONNECT 5 (code 545) |
SUSPENSION FLEXRAY (FLEX E)
| Control unit | Additional information | |
|---|---|---|
| A40/11 | Mono multifunction camera | with code 51B (Euro NCAP) |
| A40/13 | Stereo multifunction camera | With CODE 23P (Driving assistance package) |
| A108 | Active Brake Assist controller unit | With CODE 258 (COLLISION PREVENTION ASSIST) |
| A108/1 | Active Distance Assist DISTRONIC electric controller unit | With CODE 239 (DISTRONIC PLUS) |
| B92/12 | Short and long-range radar sensor | With CODE 23P (Driving assistance package) |
| N15/17 | All-wheel drive control unit | With code M005 (4MATIC) |
| N30/4 | Electronic Stability Program control unit | - |
| N51/5 | Adaptive damping system control unit | With code 459 (Steel suspension with adjustable damping) |
| N62 | Parking system control unit | With code 235 (Active parking assist with PARKTRONIC) |
| N62/4 | Mercedes-Benz Intelligent Drive control unit | With CODE 23P (Driving assistance package) |
| N68 | Electrical power steering control unit | - |
| N73 | Electronic ignition switch control unit | - |
| N80 | Steering column module control unit | - |
| N127 | Drivetrain control unit | - |
MEDIA ORIENTED SYSTEM TRANSPORT (MOST)
| Control unit | Additional information | |
|---|---|---|
| A26/17 | Head unit | With CONNECT 20 ENTRY (code 547) or CONNECT 20 MID (code 548) or CONNECT 20 HIGH (code 549) |
| N40/3 | Sound system amplifier control unit | With code 810 (Sound system) |
HEATER LIN (LIN B28)
| Control unit | Additional information | |
|---|---|---|
| N10 | Central control module | - |
| N25/17 | Front seat heater/seat ventilation control unit | With code 873 (Seat heating for driver and front passenger) except code 275 (Electrically adjustable driver's seat with memory function) or code 401 (Seat climate control for driver and front passenger) except code 275 (Electrically adjustable driver's seat with memory function) |
KEYLESS-GO LIN (LIN B27)
| Control unit | Additional information | |
|---|---|---|
| N38 | Rear switching module | With code 871 (HANDS-FREE ACCESS) |
| N73 | Electronic ignition switch control unit | - |
A/C OPERATING UNIT LIN (LIN B8-3)
| Control unit | Additional information | |
|---|---|---|
| N10 | Central control module | - |
| N58/1 | Climate control operating unit | - |
CLIMATE CONTROL LIN 2 (LIN B8-2)
| Control unit | Additional information | |
|---|---|---|
| A6n1 | Stationary heater control unit | With code 228 (Stationary heater) |
| N10 | Central control module | - |
RAIN/LIGHT SENSOR LIN (LIN B16)
| Control unit | Additional information | |
|---|---|---|
| B38/2 | Rain/light sensor with additional functions | - |
| N10 | Central control module | - |
SEAT OCCUPIED RECOGNITION LIN (LIN E2)
| Control unit | Additional information | |
|---|---|---|
| N2/10 | Supplemental restraint system control unit | - |
| N110 | Weight Sensing System (WSS) control unit | With CODE U10 (Automatic front passenger airbag shutoff) |
| N112/9 | HERMES control unit | With code 362 (HERMES LTE) or code 364 (HERMES UMTS communication module for Russia) |
| N166 | Head unit/instrument cluster control unit | CONNECT 5 (code 545) |
LEFT REAR DOOR LIN (LIN B9)
| Control unit | Additional information | |
|---|---|---|
| N69/1 | Driver door control unit | - |
| N69/3 | Left rear door control unit | - |
RIGHT REAR DOOR LIN (LIN B10)
| Control unit | Additional information | |
|---|---|---|
| N69/2 | Front passenger door control unit | - |
| N69/4 | Right rear door control unit | - |
New in comparison to the preceding series is a FlexRay™ bus system with a significantly higher data transfer rate.
Basic features of the networking architecture:
- CAN communication via different subnetworks
- Chassis-FlexRay™ bus system
- MOST (Media Oriented System Transport) bus
- Numerous subbus systems designed as single-wire bus (LIN)
The subnetworks are linked via gateways:
- Electronic ignition switch control unit
- Head unit
- CDI control unit or ME-SFI [ME] control unit
- Drivetrain control unit
On-board electrical system
Socket in rear (with code U80 (115V socket) or code U67 (230 V socket in interior))
In the lower area of the center console in the rear, there is a stowage compartment for mounting the sockets for the rear. A 115 V socket or 230 V socket is offered there as special equipment in addition to the standard double USB port.