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

Model 257, 290 up to model year 2021 with code 23P (Drive package) 

Model 257, 290 up to model year 2021 with code P20 (Driving assistant package Plus) 

Shown on model 257 

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), the left outer rear bumper radar sensor (B92/10), the short and long-range radar sensor (B92/12), as well as for the object and lane data of the MFK stereo (A40/13). The Mercedes-Benz Intelligent Drive control unit also serves as the interface (Gateway) between the front radar CAN (CAN S1) and suspension FlexRay (Flex E) (with code 292 (PRE-SAFE® Impulse side)). 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 
• Control of systems 
• Output of signals 

Reading in of sensors and signals 

The input factors are received via the following connections:

• Chassis FlexRay 
• Radar-CAN front (with code 292 (PRE-SAFE® pulse side)) 
• Radar-CAN rear (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 monitor warning message (with code (475) Tire pressure monitor (Premium))
• Tire pressure loss warning (RDW) (with code 477 (Tire pressure loss warning))
• Parking brake status
• Steering wheel angle status
• Position data for navigation
• Driver request via the cruise control switch (S163/1s18) and resume cruise control switch (S163/1 s19)
• Driver request via menu settings in the instrument cluster (A1)
• Status of the turn signal (with code 237 (Active Blind Spot Assist) or code 238 (Active Lane Keeping Assist)
• Track data (with code 238 (Active Lane Keeping Assist))

Radar-CAN front (with code 292 (PRE-SAFE® pulse side)) 

The signal from the following assembly parts are received via the front radar CAN and passed on to the Supplemental Restraint System control unit (N2/10):

• Front outer left bumper radar sensor (B29/2)
• Front outer right bumper radar sensor (B29/5)

Rear radar CAN 

The signals for the following components are received via the rear radar CAN:

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

Evaluation of input factors 

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

Control of systems 

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 (with code 23P (Driving assistance package))
• Pedestrian protection emergency brake function (with code 271 (Autonomous intervention by the brake system/pedestrian protection))
• Rear-end PRE-SAFE® (with CODE 253 (Rear collision warning and protection system))
• Active Blind Spot Assist (with CODE 237 (Active Blind Spot Assist))
• Active Lane Keeping Assist (with CODE 238 (Active Lane Keeping Assist))

Output of signals 

With code 238 (Active Lane Keeping Assist), the Mercedes-Benz Intelligent Drive control unit sends the following signals, among others, via the chassis FlexRay:

The signals are issued over the following connections:

• Chassis FlexRay 
• Radar-CAN front (with code 292 (PRE-SAFE® pulse side)) and rear radar-CAN 

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

With code 237 (Active Blind Spot Assist), the Mercedes-Benz Intelligent Drive control unit sends the following signals, among others, via the chassis FlexRay:

• Wheel selective intervention by the brake system
• Activation of left Blind Spot Assist warning indicator (M21/1e2) or right Blind Spot Assist 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

• 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 front (with code 292 (PRE-SAFE® pulse side)) and rear radar-CAN 

The Mercedes-Benz Intelligent Drive control unit transmits, for example, the following signals via the front radar CAN (with code 292 (PRE-SAFE® Impulse side)) and rear radar CAN:

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

Wiring diagram for Mercedes-Benz Intelligent Drive control unit

PE30.30-P-2106-97XBA