For anyone who may be interested I had been looking for nearly a year for a solution to adding bluetooth capability to my 2006 RX Lexus (branded as a Toyota Harrier) import to listen to music and take phonecalls through the car speakers without spending a fortune or ripping out and replacing the head unit etc. A simple module is all it takes.
I had resorted to installing an Amazon Echo Auto unit, auxing that to a standalone bluetooth portable speaker wedged into the centre armrest, and then bluetoothed the phone to the Echo unit to then play through the speaker - was basic and sounded rubbish but at least I got some music if desperate, but it looked and sounded shocking.
After A LOT of research I found the solution, and it works perfectly! For under a £100 I got hold of one of these units, its an easy install, just a Y lead is needed to add to it to make sure the touchscreen and all speakers work properly, pull out the headunit and check the pin formation is correct before ordering, and voila - bluetooth and handsfree like a modern car, love it! To add - my car has no phone buttons on the steering wheel or anything like that, its real old school, with no aux input or anything. I then paired it with a CD slot phone holder and the old girl is bang up to date.
Heres the links to the module kit and CD phone mount for anyone who will benefit from this - you can use this for many other makes too, not just Lexus.
http://www.wefatech.com/
https://www.amazon.co.uk/Olixar-Slot-Phone-Holder-Universal/dp/B003WUMRVA/ref=sr_1_3?adgrpid=52919620483&hvadid=259078983069&hvdev=c&hvlocphy=9045779&hvnetw=g&hvqmt=e&hvrand=12787464903186224819&hvtargid=kwd-316441303168&hydadcr=5114_1827866&keywords=olixar+cd+slot+mount+car+holder&qid=1681856314&sr=8-3