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

Retrofit




Retrofit

Retrofitting is a feature that has been used in other markets. Retrofitting allows system upgrading by adding an additional component to an existing system.

Retrofit automatically recodes the existing system to recognize the new equipment and put it into its scope of operation.

Example. A basic DWA system was purchased as an option when the customer initially bought with the vehicle.

One year later the owner decides he wants a tilt sensor added to the DWA system. A retrofit recode is required for this addition.