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

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Instrument Cluster Data Signal



Instrument Cluster Data Signal
- E38 vehicles up to 5-97 production
- E39 vehicles up to 9-97 production






A single wire, uni-directional, serial data signal is sent to the IKE or Low Instrument Cluster (vehicle dependent) to provide status of selector lever position, active Manual driving program and fault display data. This information is also then sent over the I and or K bus.

98 Model year E38/E39 vehicle AGS systems communicated directly to the instrument cluster via CAN. The CAN interface provides a mass of intercommunication between systems.