BMW F Chassis Instrument Cluster (Kombi) Troubles

Brandon Technical Support Specialist Commack, New York Posted   Latest  
Tech Tip
Instrument Cluster Flickering

Within the last week I have seen two cases of BMW F chassis instrument cluster failures which have been different from other failures I had previously seen. Both of these vehicles presented with the infamous “increased battery” discharge message.

Both cars had the same fault code 804086 (Driver 15KLWUP short circuit to positive) and both vehicles were an F30 chassis 3 series.

In both cases voltage drop testing the fuses revealed excessive power consumption which eventually lead to disconnecting the cluster and verifying the vehicle no longer had excessive parasitic load.

Keep an eye out for similar issues when working on BMW F chassis cars with flat batteries! Of course, running an energy diagnosis is also preferable to assist in battery system troubleshooting. 

Common F chassis cluster problems I am aware of now include:

Parasitic load

Failure during software updating

Intermittent cutting out of the display and pointers

Permanent failure of the display and pointers


Ray Diagnostician
North York, Ontario
Ray Default

Brandon, thank you for the tip

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Vinney Owner/Technician
Congers, New York
Vinney Default

Thank Brandon for sharing good to know

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