Radio preset memory is lost (with navigation)

WARNING: This page is about a different car, the 2013 Acura MDX, 2012 Acura MDX, 2011 Acura MDX, and 2010 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

Check the vehicle battery condition first (see BATTERY TEST ).
Lock and unlock the vehicle with the remote to make sure the vehicle recognizes which remote (driver 1 or driver 2) is being used.
If only XM stations are lost, go to XM radio preset memory is lost.
- With AcuraLink (see XM RADIO PRESET MEMORY IS LOST (WITH NAVIGATION WITH ACURALINK) )
- Without AcuraLink (see XM RADIO PRESET MEMORY IS LOST (WITH NAVIGATION WITHOUT ACURALINK) )

Turn the ignition switch to ON (II).
Turn on the audio-navigation unit, and set each of the radio station preset buttons.
Do each of the buttons set properly?

YES -Go to step 3.

NO -Replace the audio-navigation unit (see AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION ).
Turn the ignition switch to LOCK (0) for 1 minute, and then back to ON (II).
Test the preset buttons for proper recall operation.
Do the preset buttons recall the set radio stations?

YES -System is normal at this time. Check connections at the audio-navigation unit.

NO -Substitute a known-good audio-navigation unit (including the HDD) (see AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION ), and recheck. If the symptom/indication goes away, replace the original audio-navigation unit (see AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION ).