My music from any modern iPhone with current IOS ver plays only the right channel from the iphone over my Bolero  system's bluetooth audio through all speakers. If I go into my iphone's settings and change the balance to left then there's no sound at all. I understand it might require the addition of another cable from the bluetooth unit under the seat to the Boldero head unit. 

Is this what I need? 

 

I doubt if it's the Bolero that has a problem.

What about this?

 

Thanks for the video but I’d already confirmed that this was not set to mono on and the slider has always been in the centre. My Bluetooth headphones work perfectly well in stereo. 

Personally, I’m likely to take a trip to my local car radio store and get a Pioneer CarPlay/Android Auto head unit anyway. 

I’d say that I make use of the head unit’s BT module or also upgrade my Skoda branded unit under the seat to the latest version. 

We’ve decided to hang onto the old girl for another few years as she’s low mileage and hasn’t let us down. 

Edited 7 August, 20196 yr by Exar

My Bluetooth pays in stereo perfectly, have you tried a different phone?