Fellow forum member Jamie I kindly gave up some time this evening to plug his VCDS into my car, here's the results:

 

Address 46: Central Conv.        Labels: 1K0-959-433-MIN.clb

   Part No: 1K0 959 433 AK

   Component:    KSG              0401  

   Coding: 01D002007F2D8505485B861004CC

   Shop #: WSC 73430 790 00000

   VCID: 79FFB7A030F785D6DC9-802C

 

   Subsystem 1 - Component:   Sounder No Answer     

 

   Subsystem 2 - Component:       NGS n.mounted     

 

   Subsystem 3 - Component:      IRUE No Answer     

 

3 Faults Found:

01517 - Control Module for Trailer/Towing Sensor (J345) 

            004 - No Signal/Communication

01135 - Interior Monitoring Sensors 

            004 - No Signal/Communication

01134 - Alarm Horn (H12) 

            004 - No Signal/Communication

++++++++++++++++++++++++++++++++++++++++++++++++++++++

Address 76: Park Assist        Labels: 1Z0-919-283.lbl

   Part No SW: 1Z0 919 283 C    HW: 1Z0 919 283 C

   Component: Parkhilfe 8-Kan H04 0020  

   Coding: 0000011

   Shop #: WSC 73430 790 00000

   VCID: 3E7564BC695962EEA9B-806B

 

1 Fault Found:

01547 - Sensor for Parking Aid; Rear Mid-Right (G205) 

            009 - Open or Short to Ground

             Freeze Frame:

                    Fault Status: 01101001

                    Fault Priority: 3

                    Fault Frequency: 1

                    Reset counter: 41

                    Mileage: 254725 km

                    Time Indication: 0

                    Date: 2000.00.00

                    Time: 20:01:45

 

So, I knew I had an issue with the aircon, alarm, and parking sensor. Now I've got a bit more info to go off so I can try to resolve them!

 

VCDS could well be an investment

 

Job 1 complete: Hand up behind rear bumper, plug parking sensor back in, done - parking sensors work

Just aircon and alarm sensor to go...