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

Compass Zone Adjustment






1. Refer to the compass calibration zone map to select the correct compass zone setting for your geographical location.







2. With the compass display turned on, press and hold the COMP button (for three seconds) until the display shows the current zone of operation.
3. Momentarily press the COMP button to cycle the zone number display. Set the zone display number to match the vehicle location on the compass calibration zone map.
4. Releasing the switch for 10 seconds will exit the zone setting mode.