Home >> Volvo >> 2013 >> XC90 Base, AWD >> Repair and Diagnosis >> Steering >> Electronic Steering >> Steering Wheel Module (SWM) And Steering Angle Sensor (SAS) Diagnostic Trouble Codes >> SWM-0021: Scan- Button. Activated Too Long. Intermittent Fault (2003-2004) >> Activated Too Long. Permanent Fault