Rear view cameras significantly improve safety and parking convenience. This guide explains how to enable a low-line rear view camera using VCDS (Vag-Com Diagnostic System) on MQB platform vehicles. This process involves understanding the difference between high-line and low-line cameras and modifying specific coding within the MIB (Modular Infotainment Matrix) unit.
Understanding Rear View Camera Types on MQB Platform
MQB platform cars utilize two primary types of rear view cameras: high-line and low-line. High-line cameras are intelligent devices with their own control modules (address hex6C) and communicate directly with the CAN bus. Conversely, low-line cameras are simpler devices that connect directly to the MIB unit (address hex5F) via a coaxial cable. Both camera types rely on the MIB unit for image display. The activation process, however, differs due to their varying complexities. This guide focuses on enabling the low-line rear view camera.
Connection of low-line rear view camera to MIB unit in a car.
Activating the Low-Line Camera with VCDS
Low-line cameras require specific coding changes within the MIB unit to function correctly. This involves modifying the long-coding string of the hex5F module. The key software switch for enabling a low-line camera resides in Byte 19, Bit 4.
Initially, the MIB unit assumes no rear view camera is present. This is reflected in Byte 19 having a value of hexC6 (binary 1100 0110), where Bit 4 is set to 0. To activate the camera, Bit 4 needs to be changed to 1. This modification alters Byte 19 to hexD6.
The long-coding string for the MIB unit before and after the change is as follows:
- Before: 02840201FF00000051111101008808001F0100C601200100CF
- After: 02840201FF00000051111101008808001F0100D601200100CF
Note the change from “C” to “D” in Byte 19 highlighting the bit modification. This simple change informs the MIB unit that a low-line rear view camera is now installed and should be operational.
In addition to the MIB coding, Byte 2, Bit 4 on the hex10 module (Central Electronics) often requires enabling. However, in many cases, this bit is already activated by default. Verification through a VCDS autoscan is recommended.
Conclusion
Enabling a low-line rear view camera with VCDS involves a straightforward coding modification within the MIB unit. By changing Byte 19, Bit 4 from 0 to 1, you activate the camera functionality. This guide provides the necessary information to successfully complete the retrofit process. Remember to always double-check your coding and perform a thorough test after the installation. While this guide outlines the fundamental steps, consulting your vehicle’s specific documentation is always recommended.
