Self Study Program 276 – The Phaeton Automatic Proximity Control (APC)

VAG SSP 276. If a driver attempts to activate the vehicle’s cruise control system (CCS) in the heavy raffic scenario shown below to cruise along in a relaxed manner, he will soon have to rake because of the frequently changing distances to vehicles ahead.

The APC system has learned its lesson from bats. In much the same way as bats use ultrasonic waves to find their way about their surroundings, the Automatic Distance Control (APC) scans the traffic situation ahead of the vehicle by means of millimetre wave radar and controls the distance to the vehicle ahead on the basis of this data.

The CCS can be expanded to include a proximity-maintaining function which allows comfortable and stress-free driving even in heavy traffic.


  • Introduction
    • Overview
    • Functional description
    • Functional limits
    • System overview
  • Components of the APC system
    • Multi-function steering wheel
    • APC display in the dash panel insert
    • Accelerator, brake pedal and selector lever
    • Proximity control sender G 259
    • Brake servo control unit
    • Anti-theft alarm
    • Electronic brake servo
    • Data flow in the CAN network
  • Service
    • Calibrating the proximity control sender
    • Measuring method
    • Correcting an indication error
    • System safety
    • Diagnostics
  • Glossary
    • Terms in italics are explained here
  • Test your knowledge

This Self-Study Programme explains the design and function of new developments. The contents will not be updated. Please refer to the relevant Service Literature for current inspection, adjustment and repair instructions.

Language: English
Format: PDF
Pages: 40

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