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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Stop Lamp Switch, Task




Stop Lamp Switch, Task




S9/1 Stop lamp switch
1 NC contact
2 NO contact

The stop lamp switch (S9/1) passes a signal to the stop lamps indicating that the driver has pressed the brake pedal and also passes a signal to inform different electronic systems (e.g. BAS, ETS, ASR, ESP, CC, IFI, DFI, CDI, ME-SFI) of the brake actuation.