Component Description For Electronic Stability Program Control Unit - GF42.45-P-5119FR
Model 257, 290 up to model year 2021
Shown on model 257
Location
The Electronic Stability Program control unit is located in the engine compartment, at the left next to the Brake booster BAS (A7/7) on the hydraulic unit traction system (A7/3).
Tasks
The Electronic Stability Program control unit contains the control for the following systems:
- ADAPTIVE BRAKE
- Electric parking brake
- Electronic Stability Program (ESP®)
- Electronic Brake force distribution (EBD)
- Anti-lock braking system (ABS)
- Acceleration skid control (ASR), electronic traction system (ETS)
- Brake Assist System (BAS)
- Brake Assist System PLUS (BAS PLUS) (with CODE 23P (Driving assistance package))
- Hill Start Assist
- Adaptive Brake lights, flashing (except with CODE 494 (USA version))
- Dry braking
- Precharging, depending on accelerator pedal actuation
- Precharging, depending on lateral acceleration
- HOLD function
- ESP® trailer stabilization (with CODE 550 (Trailer hitch))
- PRE-SAFE® system (with CODE 23P (Driving assistance package))
- Standstill control (SSC)
- Steer Assist
- Tire pressure loss warning (RDW) Tire pressure monitor (with CODE 477 (Tire pressure loss warning))
- Variable speed limiter (except CODE 23P (Driving assistance package))
- Cruise control (except CODE 23P (Driving assistance package))
The Electronic Stability Program control unit has the following tasks:
- Reading in of signals
- Evaluation of input factors
- Actuation of components
Reading in of signals
The input factors are read in via the following connections:
- Direct line
- Suspension FlexRay (Flex E)
- Vehicle dynamics CAN (CAN H)
Direct line
The following signals are read in via direct lines:
- Circuit 30
- Circuit 31
- Traction system hydraulic unit
- Brake vacuum sensor (B150)
- Left front axle rpm sensor (L6/1)
- Right front axle rpm sensor (L6/2)
- Left rear axle rpm sensor (L6/3)
- Right rear axle rpm sensor (L6/4)
- Electrical parking Brake switch (S76/15)
- Brake lights switch (S9/1)
Chassis FlexRay
The Electronic Stability Program control unit is a suspension FlexRay user. It communicates with the following control units:
- Instrument cluster (A1)
- Supplemental Restraint System control unit (N2/10)
- CDI control unit (N3/9) (with diesel engines)
- ME-SFI control unit (N3/10) (with gasoline engines)
- Front SAM control unit (N10/6)
- Rear SAM control unit (N10/8)
- Trailer recognition control unit (N28/1) (with CODE 550 (Trailer hitch))
- Parking system control unit (N62) (with code 235 (Parking Pilot with PARKTRONIC) or with code P44 (Parking Package))
- Mercedes-Benz Intelligent Drive control unit (N62/4) (with code 23P (Driving Assistance Package) or with code P20 (Driving Assistance Plus Package))
- Electrical power steering control unit (N68)
- Left front door control unit (N69/1)
- Electronic ignition switch control unit (N73)
- Steering column tube module control unit (N80)
- Powertrain control unit (N127)
- Control unit for electric controller unit of fully integrated transmission control (Y3/8n4)
Vehicle dynamics CAN
The Electronic Stability Program control unit is a vehicle dynamics CAN user. It communicates with the following control unit:
Supplemental restraint system control unit
Evaluation of input factors
The input factors that have been read in are evaluated by the integrated microprocessor and the affected components are then actuated.
Actuation of components
Components are actuated with the following line:
- Direct line
Direct line
The following components are actuated via direct lines:
- Traction system hydraulic unit
- Left electric parking Brake actuator motor (M76/1)
- Right electric parking Brake actuator motor (M76/2)
| Wiring diagram electronic stability program (ESP) | PE42.45-P-2200-97XBA |