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BMW Troubleshoot — Function Explorer

Pick a chassis and a factory option (SA/SALAPA) — see everything involved in that function: every control unit, component, wiring document and bus it touches. The whole picture of a system in one place, for tracing a fault back through it. Every value from a real BMW wiring document.

All ECUs per function Bus topology Wiring documents Component inventory

Free with any account.

Troubleshoot — Function Explorer

Pick a chassis and a factory option code (SA / SALAPA) and see everything involved in that function — every control unit / ECU, component, wiring document and bus it touches — recovered from the live wiring graph. The whole picture of a system in one place, for tracing a fault back through it. Every value comes from a real BMW wiring document for that series. No VIN required.

1 · Vehicle & Option

Chassis / Series

Filter options

How it Works

BMW Function Wiring Explorer. Pick a factory option code (SA/SALAPA) and see everything involved in that function — every control unit, component, wire, connector, and bus it touches.

Requirements & How to Use

Select chassis/series (e.g., F30, G05, E90)

Filter and pick an option code (e.g., 6NR HiFi, 688 Surround View, 6NS Head-up)

See the complete picture — all ECUs, connectors, signal paths, and bus connections for that function

Coverage

SA/SALAPA-based analysis, data from real BMW wiring documents, full signal-path tracing

Access

Pro plan. No VIN required — works by chassis and option code.

Retrofit Wiring → VIN Decoder → View Plans →