Adding Bluetooth to a VW RCD 300
I own a basic VW Caddy MK3 (2009) which was equipped with a RCD 300 head unit. It did not come with the aux function/connectivity and this post explains how I added Bluetooth connectivity. This was a very simple installation with no requirement for VCDS coding; the Bluetooth adapter replicates a CD changer. When I wrote this post in 2021 the adapter cost about £35 on Amazon UK. On 26 October 2026 it was in stock at £45.90: Handsfree Bluetooth Audio 12pin for VW on Amazon UK. It’s an affiliate link, so I earn a small commission if you buy through it. The price to you is the same. ...