no nav-min option --- how do i control the level of radio/cd mute?

[grantsmtih82]

on previous bmw i had the nav-min option when pressing "info"  which easily allowed me to control the level of mute for radio/cd/tape  when the nav was talking..  scale -9 to +9    ie.  no mute or some mute or fully muted..

however the E53 doesnt have this option when i press "info"  so where is this feature located now? 

my old bmw has all the same equipment  mkiv nav,  bm54 radio,  16:9 screen  etc,,

im desperate to be able to lower the level the radio mutes when nav talks

[grantsmtih82]

please can someone help with regards to controlling the level of mute when the nav speaks..

i really want the radio  to automatically mute to a lower never when the nav gives guidence  at the moment it only seems to mute  v slightly  (like 1 click)

[X5Sport]

Is it under 'Set'?  I got rid of my E53 a couple of years back so can't remember where everything is now.

Richard

[grantsmtih82]

I think volume under set. Is the "quieter" and"louder"  this option controls the level of mute applied to cd/radio/tape. When nav is speaking.    If nav-min isn't an option on x5. What option does control mute level?