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 that it might require the addition of another cable from the bluetooth unit under the seat to the Boldero head unit. Please help.

In my 2011 Yeti I have a Bolero and an iPhone. I do not experience the problem you describe. Have you checked the Bolero settings rather than the iPhone? Until you mentioned your attempted cure, I didn't even realise one could adjust the stereo balance on an iPhone!

Hi Freedie

Oh yes I’ve checked everything. 

 

In your iPhone, go to settings>accessibility then scroll down to    The slider L______R below the Hearing section. While in the car and playing music or anything set the slider all the way to L and please tell me if the sound cuts out. I believe this generation of Bluetooth (3.x from 2009 on) was never  stereo so I’m surprised the car of your vintage pulls it off. Back in the day it was all USB sockets, or worse  3.5mm audio jacks. 

Better still, try this nifty YouTube video when connected to the car’s Bluetooth audio. 

 

 

I get nada on the left speaker. 😞

Just been out to check. Works perfectly as I expected. Something is wrong with your iPhone I suspect. Anything stuck in the jack socket, if an old model with such?

2 hours ago, Exar said:

Better still, try this nifty YouTube video when connected to the car’s Bluetooth audio. 

 

 

I get nada on the left speaker. 😞 

 

How did you connect that to the cars Bluetooth, with your iPhone?
If yes that's proving nothing.

Ok, while my home was BT into my car I played the video, there’s no sound when the video plays audio on the left channel. I’ll work it out eventually, I’m about to head out with a laptop and band older android device. 

It proves plenty, it means that there’s no sound from the left channel of the source iPhone playing that YouTube test video. Turns out my Skoda BT module is a 5k0 035 730 e

I’m continuing to research. 

Edited 7 August, 20196 yr by Exar

If you Bluetooth audio from your iPhone to your PC is it stereo?

Edited 7 August, 20196 yr by freedie

19 hours ago, Exar said:

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 that it might require the addition of another cable from the bluetooth unit under the seat to the Boldero head unit. Please help.

 

Sounds like someone replaced the Bluetooth module with a new one, but didn't upgrade the wiring loom. The older modules were mono for voice calls only (single channel drivers side) and the later ones were stereo for music streaming but needed another channel wiring in from the module to the head unit.

Hey Rustynuts, that’s what I’ve come up with too. The BT module is terrific for for its vintage. 

Now, where can I find this wiring loom please?

Edited 7 August, 20196 yr by Exar

Hi Exar, I have the exact same problem with my Yeti 2012. Did you manage to solve this?

On 07/08/2019 at 09:01, Exar said:

Better still, try this nifty YouTube video when connected to the car’s Bluetooth audio. 

 

 

I get nada on the left speaker. 😞

 

Hi @Exar, I have the exact same problem with my Yeti 2012. Could you please let me know if you manage to solve this and how? Thanks! 

Hi Jim, I gave up in the end. I had the whole

head unit replaced with Pioneer 2din with CarPlay that catered for a reverse camera and an under passenger seat subwoofer. Cost me a bit but no regrets at all.  

14 hours ago, JimCoelho said:

Hi Exar, I have the exact same problem with my Yeti 2012. Did you manage to solve this?

 

You're missing two wires...

 

If you want to confirm this, take a look at the quadlock connector on the rear of the headunit. On the 'C' section, check that pins 5, 6, 11 and 12 have wires (TEL L-, R-, L+, R+) - at a guess two will be missing

 

 

If they are, you'll need to run two new wires between the quadlock and the BT module connectors. The instructions used to be on myGTI but that seems to be down.

 

Once you've confirmed the wires are missing, I'll try and dig out the correct positions to connect to on the BT connector.

I have this exact problem too! I have connected a bluetooth receiver to the AUX port but fixing the head would be a much better solution so yes please to more info.

36 minutes ago, Colinn500 said:

I have this exact problem too! I have connected a bluetooth receiver to the AUX port but fixing the head would be a much better solution so yes please to more info.

 

Ok I have a facelift model from '14 so maybe different scenario. Here's the back of the unit - what am I looking at/for here?

 

 

 

langers2k, trying to match your diagram with my pic if the 4 wired pins on the green block are the 5, 6, 11 and 12 you speak of then missing wires are not my problem (sigh)

@Colinn500 - can you explain your problem and exactly what device you're using?

 

If you have an AUX socket, I would not expect it to connect to the 4 'Tel' pins. Instead, it should go to the 3 'Aux' pins (1, 2, 7) in section 'B'.

3 minutes ago, langers2k said:

@Colinn500 - can you explain your problem and exactly what device you're using?

 

If you have an AUX socket, I would not expect it to connect to the 4 'Tel' pins. Instead, it should go to the 3 'Aux' pins (1, 2, 7) in section 'B'.

Hi,

 

I have the same problem as the OP - when streaming music from my phone to the Bolero bluetooth - the left channel is missing, it seems the right channel is going to all speakers. As a workaround I have a bluetooth receiver dongle thingy plugged to an AUX port in the armrest. I stream music from my phone to that and everything is in wonderful stereo but of course I need my phone out to play/pause/skip etc, so not ideal.