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

Control Unit Survey







- The numbers of the individual control units have been reallocated
- From 1 - 9: Drive control units
- From 10 - 49: Body electronics
- As of 50: Running - gear control systems

- All other functions remain the same.

Attention! The highlighting of numbers means that only these numbers can be selected. Faults stored in the memory are displayed as before during the quick test by highlighting the entire text.

NEW: In addition, the asterisk is turned into an "F", so as to make it possible to display "Fault stored" on the printout.