Bulletin Number: 15-221-18R; Revised 02/12/21
Page 38 of 45
Continued...
Navi Operation
9.0
CONDITION# 9.1:
The Navigation system’s voice prompt volume stays where it has been reset
to only if the car is off for a short time. After several hours or overnight, it will reset to 10:
CAUSE:
This is normal operating characteristic to ensure the driver can hear the navigation prompts
during a later trip. For example, if the customer reduces the voice prompt volume to very low or OFF,
then during the next trip, they (or another driver) may miss critical prompts or think navigation is not
working correctly.
RECOMMENDATION:
Please advise the customer they will need to adjust the volume to a
comfortable level whenever using the NAVI guidance feature.
CONDITION# 9.2:
Navigation guidance volume changes level on its own
:
CAUSE:
There are different volume focuses for different channels such as phone, navigation,
microphone, etc.
RECOMMENDATIONS:
A. Change value in the settings.
B. Change value via volume focus button on the HU (Entertainment volume if no other source on,
otherwise settings apply to the source playing)
Critical points:
•
Via volume focus button customer can only change the current source playing -> example: he
may want to increase navigation speaker volume, but increases music volume instead (right
screenshot)
•
When car turned off and on again, volume settings go back to factory default settings (for
BASE and MIG units) which is 15 for music; for HIGH units the settings remain.
