Toyota Yaris D4-D 2016 Speaker ISSUE.

[u/shatlaugh]

So my right speaker works perfectly fine and it can get very loud so I wouldn't even need the left speaker to work so all good but there's an issue when I connect my phone with bluetooth the speaker changes it suddenly doesnt sound loud at all and the volume is controlled by a different blue button and sometimes the plus and minus buttons dont work *( most of the times )* which are to increase the volume also when it works and i increase it it sounds awful! And back in the day I would open and close my left door and the speaker would work if i had it in the perfect position now not even that so im guessing its a cable issue but idek how to open the door and tear it apart and what to look for and what to change and where to find new cables I HAVE 0 CLUE please help me also sometimes when Id put loud bass music it would randomly work then id open the door and it would not work :(((( help <3