OPERATOR'S STATION DEF/SCR System Alarm When the DEF level becomes low and/or the Urea SCR system malfunctions, the engine performance is controlled depending on the status. The operator is alerted with alarm indicators. Move and park the machine in a safe place and follow the displayed message, or troubleshooting guide for the accompanied alarms. DEF/AdBlue® Level Alarm Display of the DEF gauge changes depending on the DEF level. The engine speed and output level control is as follows. f NOTE: Set the FNR controller to neutral or apply the parking brake to show the alarm message on the monitor. d CAUTION:
When DEF tank becomes empty, the engine runs but machine operation is disabled until DEF is supplied. 1-32 Level Gauge Alarm Indicator Status/Inducement (Yellow) (Red, light) DEF level is low. Refill DEF. (Red) (Red, slow blink) DEF is insufficient. Refill DEF. Engine output is restricted. (Red) (Red, fast blink) DEF tank is empty. Refill DEF. Engine output and speed are restricted.