Long-Range Radar Sensor, Component Description - GF30.30-P-3125LF

Model 217, 222 

up to model year 2018 

with code P20 (Driving Assistance package Plus) 

Shown on model 222 

Location 

The front long-range radar sensor is located in the center, in front of the radiator.

Tasks 

The long-range radar sensor has the following tasks:

• Actuation, power supply and evaluation of target data from the integral long range radar
• Transmission of data for longitudinal directional vehicle control to the radar sensors control unit (N62/1)
• Transmission of data for longitudinal directional vehicle control to the radar sensors control unit
• Transmission of object data to the radar sensors control unit for plausibility checking of the object data from the stereo MFK (A40/13)
• Transmission of object data for collision-avoiding intervention by the brake system to the radar sensors control unit

The control electronics integrated in the long-range radar sensor actuate the long range radar and evaluate the target data. The object data from the long range radar are transferred from the front long-range radar sensor via the chassis FlexRay (Flex E) to the radar sensors control unit.

Input and output signals 

The long-range radar sensor transmits and receives the following signals via the chassis FlexRay:

• Input signals 
• Output signals 

Input signals 

• Radar request
• Diagnosis request

Received signals are evaluated by the integrated control electronics.

Output signals 

• Target data from the radar
• Diagnostic data

Structure 

The front long-range radar sensor contains control electronics for actuating and evaluating the long range radar.

Properties of the long range radar:

• Detection range of the long range radar sensor:
  • s < 30 m with a detection angle of ∠ = 30°
  • s = 30 to 100 m with a detection angle of ∠ = 16°
  • s = 100 to 200 m with a detection angle of ∠ = 12°
• Carrier frequency: 77 GHz (in accordance with the "Pulse Doppler Principle" for independent measurement of distance and speed)

The front wide range radar sensor must be readjusted using the integrated "Service Adjustment Mode" after replacement (e.g. after an accident repair).

Wiring diagram for Distronic (DTR) control unit

Engine 157, 276, 277, 278, 279, 642.8, 651 in model 222 up to model year 2018 with code P20 (Driving Assistance package Plus) Control unit B29 Engine 157, 278, 279 in model 217 up to model year 2018 with code P20 (Driving Assistance package Plus) Control unit B29

PE30.30-P-2101-97SEA