Nick Bartlett“Every man I meet is my superior in some way, and in that I learn from him.” - Emerson

I connected my iphone to our 2008 Toyota Camry tonight and found it fairly easy for not having used bluetooth before.  I was unable to find out how to import all my phone’s contacts directly into the car, but that’s another story.  I setup some contacts in the car’s phone book manually and started making some calls.  Immediately I was told “I can’t hear you”.  I was unable to find in Toyota’s manual how to adjust the microphone volume.  After some googling, I found a solution online here and here.  The images below were taken from these two sites.  All credit goes to them.

1. Turn your Toyota to the “on” position.  This could be a push button or key.  Don’t start the vehicle, just the on position as if you were listening to the radio.

2. Hold the “info” button on the vehicle’s display with your right hand and flip the lights on and off with your other hand.  You might have to play with it a bit to get it right.  This is why everytime you get your car back from the dealer your lights have been turned off.  After a couple seconds and two or three flips of the lights, the display will enter diagnostic mode.

3. The menu is probably different between Toyota models and years, but once you’re in diagnostic mode, get to the main menu.  On my 2008 Camry, I initially had to press a button in the upper right corner for the menu.  The menu will look something like the image below.

4. Press the “BT Voice Quality Set” button on the menu.  You’ll see an interface like below for the bluetooth adjustment.  The microphone volume is the “Send Voice Lv” entry.  Turn it all the way up to 5.  The receive voice entry is fine at 0, but you can always turn that up a bit as well.  I turned mine up to 3 and it was quite a bit louder.

5. I was unable to find an “exit” button, so I turned off the car from here and it worked fine.