What does your temperature gauge do when this happens? The ETC light (Electronic Throttle Control) has nothing to do with the coolant temperature but something is triggering both events. Is the heater air as hot as it normally is or does the air temp drop during your commute? If so, start with replacing the engine thermostat.
2006 Inferno Red SRT8 with groups I, II, Sunroof, K&N drop-in filter, Auto-dim mirror, Jet-180 T-stat, Predator, 300 SRT struts/springs, Chally SRT wheels.
Born 6-21-06, Home 4-26-10. 1/4 mile - 12.989 @ 108.78 in street trim. Traded 10-19-2012.
2006 Inferno Red R/T with R&T Born 8-12-05, Home 8-25-05, Sold 8-9-10.