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

Computer Memory Saver




Used on cars with theft-protected radios to prevent the radio from electronically locking when battery power is disconnected. Use of this tool eliminates the need to re-activate the radio (reenter the correct code) after reconnecting battery power.


Typical Computer Memory Saver:










WARNING: Always separate the airbag voltage Supply connector before using a computer memory saver. Failure to do so may result in accidental activation of the airbag. For more information refer to "Air Bag Systems".