Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Precautions For AV and NAVI Control Unit Replacement

Precautions for AV and NAVI Control Unit Replacement
- When replacing the AV and NAVI control unit, eject the map DVD-ROM before disconnecting the battery.
- The AV and NAVI control unit has the following information stored in its memory. Record the memory contents before replacing the control unit, and input them in the new unit as necessary.


- Preset frequency
- Area for indicating station, selection of overlapped stations


- Program status


- Volume balance memory set values
- Equalizer memory set values


- Brightness of light when ON/OFF
- Dimming switching
- Display color switching


- Latest status (map screen/BIRDVIEW (TM), reduced scale, rotation angle of map screen, route guide ON/OFF, track ON/OFF, etc.)
- Current position
- Destination, passing point 1 - 5
- Registered places, their names, etc.

NOTE: Only removing the battery does not erase the memory.