Procedure Of ATF Level Confirming

Remove the filler plug (A) and the O-ring by using Torx wrench (T55) then add 400cc of ATF from the oil filling hole.
NOTE: In case, remove the air cleaner assembly.

Fig 1: Identifying Filler Plug And O-Ring
Courtesy of HYUNDAI MOTOR CO.
Start the engine.
Shift from "P" to "D", then from "D" to "P", keeping each shift position "N", "R" more than 2 seconds with foot braking.
Repeat 2 times above procedure "3".
Remove the overflow plug (A) and the O-ring by using Torx wrench (T40) when ATF temperature on CAN signal rises up to 50~60°C at stabilized idle speed condition.

Fig 2: Identifying Overflow Plug And O-Ring
Courtesy of HYUNDAI MOTOR CO.
Oil level is correct if ATF drain volume is in the range in the figure below.

Fig 3: ATF Temperature On CAN Signal Graph
Courtesy of HYUNDAI MOTOR CO.
If the thin oil stream becomes drop by drop, fix the overflow plug with a new O-ring.
O-ring size: inner dia.-6.07mm, thickness-1.78mm
Tighten the overflow plug by using Torx (T40) wrench with the specified torque.
TORQUE : 6-9 Nm (0.6-0.9 kgf.m, 4.3-6.5 lb.ft)
Fix the filler plug with a new O-ring.
O-ring size: inner dia.-15.41 mm, thickness-2.21mm
Tighten the filler plug by using Torx (T55) wrench with the specified torque.
TORQUE : 24-56 Nm (2.4-5.6 kgf.m, 17.4-40.5 lb.ft)