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Home >> Volvo >> 2007 >> S60 Base, AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Entertainment Systems >> Media, Communication And Navigation - Symptom Related Diagnostic Procedures >> Checking The Head Unit/Audio Unit Display (2001-2009) >> Checking the Head Unit/Audio Unit Display >> Fault-Tracing Information

Fault-Tracing Information

Check the function of the rheostat on the hazard warning flasher button by increasing and lowering the instrument lighting.

HINT: If the rheostat is not working in the hazard warning flasher button, the fault is in the head unit/audio module. 

Is the rheostat for the flash warning button working? 

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