mic volume in vehicle
 

I have an 2015 Lexus ES350. the volume when using my iphone sync to my vehicle is not idea. How do I correct it or buy an aftermarket mic?

Is the problem the speaker, or your voice? While in a call, just turn the speaker up with the steering wheel buttons as you would if listening to the radio. This will not affect the level of the radio, only when in a phone call.

Question is unclear. "Is not idea". Please re-write more clearly.

Likely intended "... is not ideal"