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

Programming and Relearning

Downloading software and replacing the control module
A new trailer module (TRM) is not preprogrammed. New software must always be downloaded.
New software can be downloaded into previously installed control modules.
When downloading new software a P/N must be entered. This must be done to obtain the correct software and full operation of the control module. The P/N corresponds to the type of socket used on the cable harness for the tow hitch.