diff --git a/src/tuxedo_io/tongfang_wmi.h b/src/tuxedo_io/tongfang_wmi.h
index deb488c..1da271e 100644
--- a/src/tuxedo_io/tongfang_wmi.h
+++ b/src/tuxedo_io/tongfang_wmi.h
@@ -309,7 +309,7 @@ static u32 uw_set_fan(u32 fan_index, u8 fan_speed)
 	// Check current mode
 	uw_ec_read_addr(0x51, 0x07, &reg_read_return);
 	if (!(reg_read_return.bytes.data_low & 0x40)) {
-		// If not "full fan mode" (ie. 0x40 bit set) switch to it (required for fancontrol)
+		// If not "full fan mode" (i.e. 0x40 bit set) switch to it (required for fancontrol)
 		uw_ec_write_addr(0x51, 0x07, reg_read_return.bytes.data_low | 0x40, 0x00, &reg_write_return);
 		// Attempt to write both fans as quick as possible before complete ramp-up
 		pr_debug("prevent ramp-up start\n");
@@ -326,3 +326,28 @@ static u32 uw_set_fan(u32 fan_index, u8 fan_speed)
 
 	return 0;
 }
+
+static u32 uw_set_fan_auto()
+{
+	u8 reg_high = 0x18;
+	u32 i;
+	union uw_ec_read_return reg_read_return;
+	union uw_ec_write_return reg_write_return;
+	u8 low_reg_fan0 = 0x04;
+	u8 low_reg_fan1 = 0x09;
+
+	// Check current mode
+	uw_ec_read_addr(0x51, 0x07, &reg_read_return);
+	if (reg_read_return.bytes.data_low & 0x40) {
+		// If "full fan mode" (i.e. 0x40 bit set) switch it off
+		uw_ec_write_addr(0x51, 0x07, reg_read_return.bytes.data_low & 0xbf, 0x00, &reg_write_return);
+		// Attempt to write both fans to 100% to restore default "full fan mode"
+		for (i = 0; i < 10; ++i) {
+			uw_ec_write_addr(low_reg_fan0, reg_high, 0xc8, 0x00, &reg_write_return);
+			uw_ec_write_addr(low_reg_fan1, reg_high, 0xc8, 0x00, &reg_write_return);
+			msleep(10);
+		}
+	}
+
+	return 0;
+}
diff --git a/src/tuxedo_io/tuxedo_io.c b/src/tuxedo_io/tuxedo_io.c
index 032cd10..268410d 100644
--- a/src/tuxedo_io/tuxedo_io.c
+++ b/src/tuxedo_io/tuxedo_io.c
@@ -229,6 +229,9 @@ static long uniwill_ioctl_interface(struct file *file, unsigned int cmd, unsigne
 			uw_ec_write_addr(0x41, 0x07, argument & 0x01, 0x00, &reg_write_return);
 			*/
 			break;
+        case W_UW_FANAUTO:
+			uw_set_fan_auto();
+			break;
 #ifdef DEBUG
 		case W_TF_BC:
 			copy_result = copy_from_user(&uw_arg, (void *) arg, sizeof(uw_arg));
diff --git a/src/tuxedo_io/tuxedo_io_ioctl.h b/src/tuxedo_io/tuxedo_io_ioctl.h
index ccef035..1af3ae4 100644
--- a/src/tuxedo_io/tuxedo_io_ioctl.h
+++ b/src/tuxedo_io/tuxedo_io_ioctl.h
@@ -83,5 +83,6 @@
 #define W_UW_FANSPEED2		_IOW(MAGIC_WRITE_UW, 0x11, int32_t*)
 #define W_UW_MODE		_IOW(MAGIC_WRITE_UW, 0x12, int32_t*)
 #define W_UW_MODE_ENABLE	_IOW(MAGIC_WRITE_UW, 0x13, int32_t*)
+#define W_UW_FANAUTO	_IOW(MAGIC_WRITE_UW, 0x14) // undo all previous calls of W_UW_FANSPEED and W_UW_FANSPEED2
 
 #endif