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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Fault Code 18

Data lead / RDK combi instrument Fault code - 18 -

- Open circuit
- Check the data line from PIN 1 of the tire pressure warning system control unit connector to PIN 10 of instrument cluster connector 2