Scania ICL DTC 4637 DAU

ICL Instrument Cluster · Scania

Code 4637 (decimal). Some diagnostic tools show it in hexadecimal as 121D.

In short

The instrument cluster cannot make contact with the driver alert unit (DAU).

Applies to: ICL2

What does Scania ICL fault code 4637 mean?

What causes Scania DTC 4637?

How does the system react?

How to fix Scania ICL fault code 4637?

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This information is for guidance only. Always follow the manufacturer workshop manual and safety procedures; if in doubt, contact an authorised workshop.