Mercedes-Benz Intelligent Drive Control Unit, Component Description - GF30.30-P-3312RFM

Model 205 

as of model year 2019 

with code 23P (Driving Assistance Package) 

Model 253 (except 253.99) 

as of model year 2020 

with code 23P (Driving Assistance Package) 

Shown: Model 205.0 

Location 

The Mercedes-Benz Intelligent Drive control unit is located in the trunk on the left sidewall.

Tasks 

The Mercedes-Benz Intelligent Drive control unit is the evaluation and arithmetic unit of the right outer rear bumper radar sensor (B92/7), left outer rear bumper radar sensor (B92/10), short and long range radar sensor (B92/12) as well as for the object and lane data of the stereo multifunction camera (A40/13). This in turn means that the Mercedes-Benz Intelligent Drive control unit is responsible for the following tasks:

• Reading in of sensors and signals 
• Evaluation of input factors 
• Controlling functions 
• Output of signals 

Reading in of sensors and signals 

The input factors are received via the following connections:

• Suspension FlexRay (Flex E) 
• Radar CAN 2 (CAN S2) 

Chassis FlexRay 

The Mercedes-Benz Intelligent Drive control unit receives the following information via the chassis FlexRay, among other things:

• Radar data from the short and long-range radar sensors
• Diagnostic data from the short and long-range radar sensors
• Status of the accelerator pedal
• Gear range status
• Service brake, status
• Status of brake pedal
• ESP® status
• Yaw rate/yawing moment status
• Standstill control status
• Status information from the driver assist or driving safety system
• Wheel speeds and wheel rotation direction
• Brake torque
• Drive torque
• Tire pressure (with code 475 (Tire pressure monitor))
• Tire pressure loss warning (RDW) (with code 477 (Tire pressure loss warning))
• Parking brake status
• Steering wheel angle status
• Position data for navigation
• Driver's request via the Cruise Control switch (S163/1s18) or resume Cruise Control switch (S163/1s19)
• Driver request via menu settings in the instrument cluster (A1)
• Status of turn signal indicator (for Active Blind Spot Assist system or Active Lane Keeping Assist system)
• Lane data (for Active Lane Keeping Assist system)

The functions that use these signals are described in the individual function descriptions (see block diagram or function schematic).

Radar CAN 2 

The signals for the following assembly parts are received over the radar CAN 2:

• Right outer rear bumper radar sensor
• Left outer rear bumper radar sensor

The functions that use these signals are described in the individual function descriptions (see block diagram or function schematic).

Evaluation of input factors 

The input factors are evaluated by the integrated microprocessors and the relevant assembly parts are then actuated.

Controlling functions 

The Mercedes-Benz Intelligent Drive control unit actuates the following systems to match the particular equipment involved:

• Variable speed limiter (except code 494 (USA version))
• Permanent speed limiter (e. g. for winter tires)
• DISTRONIC Distance-Pilot, function
• Steering-Pilot, function
• Evasive Steering Assist, function
• Active Brake Assist with intersection function
• Pedestrian protection emergency braking function
• PRE-SAFE® rear end
• Active Blind Spot Assist
• Active Lane Keeping Assist

Output of signals 

The signals are issued over the following connections:

• Chassis FlexRay 
• Radar CAN 2 

Chassis FlexRay 

The Mercedes-Benz Intelligent Drive control unit also sends the following signals via the chassis FlexRay:

• Increase in the drive torque
• Reduction in the drive torque
• Driving stages limitation
• Increasing the gear range
• Reducing the gear range
• Warning tone output
• System and warning indicators output
• Request for PRE-SAFE® measures
• Request to the parking brake
• Radar requirements of the long range radar (vehicle/operation-specific data
• Diagnosis request

The Mercedes-Benz Intelligent Drive control unit transmits, among other things, the following signals via the suspension FlexRay for the Active Blind Spot Assist system:

• Wheel selective intervention by the brake system
• Activation of left blind spot assist ready and warning indicator (M21/1e2) or right blind spot assist ready and warning indicator (M21/2e2)
• Warning tone output
• System and warning indicators output
• Radar requirements of the long range radar (vehicle/operation-specific data
• Diagnosis request

The Mercedes-Benz Intelligent Drive control unit transmits, among other things, the following signals via the suspension FlexRay for the Active Lane Keeping Assist system:

• Wheel selective intervention by the brake system
• Warning tone output
• System and warning indicators output
• Radar requirements of the long range radar (vehicle/operation-specific data
• Diagnosis request

Radar CAN 2 

The Mercedes-Benz Intelligent Drive control unit transmits, among others, the following signals via radar CAN 2:

• Radar requirements of the short range radar (vehicle/operation-specific data)
• Diagnosis request

The functions that use these signals are described in the individual function descriptions (see block diagram or function schematic).

Wiring diagram for Mercedes-Benz Intelligent Drive control unit

PE30.30-P-2106-97FBA