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)

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To Change Customer's Code

F. To Change Customer's Code

IMPORTANT: To change the customer's code the radio must be unlocked and no customer code stored in the radio. The radio will display clock "1:00" when unlocked. To determine if there is a customer code stored or not, press and hold presets 1 and 4 until the display changes. If "SEC" is displayed, there is a customer code stored. If is displayed, there is no code stored.

Once the radio is unlocked and the old customer code is removed by following parts A and B, enter the new customer code by following step C.