Your vehicle has a multi-speed auxhilary fan setup that changes speed according to coolant temperature. If you are concerned you could have the lower speed controls for the auxhilary fan checked to make sure all speeds are working properly.
Listed are the fan speed stages and the coolant temperature for switching
1ST STAGE - 100 C - ON, 95 C - OFF
2ND STAGE - 107 C - ON, 100 C - OFF
3RD STAGE - 115 C - ON, 107 C - OFF