This bulletin provides information regarding servicing the fluid level on Hyundai 8-speed automatic transmissions. Applicable vehicles include 2012-2016 Genesis Sedan and Equus, 2017-on Genesis G80 and 2017-on Genesis G90.
Note locations of the drain plug and overflow plug.
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Remove the plastic shield under the transmission.
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If the ATF has been completely drained, go to Step 3. To check the ATF level, go to Step 5.
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Turn the engine off, shift to neutral and lift the vehicle on a hoist. Use an 8mm or 5/16” hex wrench and remove the fill plug and washer.
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Remove the overflow plug. Use a fluid pump or suction gun to add SPH-IV – RR ATF through the fill plug until ATF flows from the overflow plug hole. Reinstall the overflow and fill plugs.
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Attach a GDS and select vehicle, Data Analysis, A/T menu and Oil Temperature Sensor. Move the shift lever from P-R-D and back to P. Drive the vehicle until the ATF is at the low end of the range of 122-140 degrees F.
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Start the engine, shift to neutral and raise the vehicle on a hoist. Remove the fill and overflow plugs. Add SPH-IV – RR ATF through the fill plug until ATF flows out of the overflow. Reinstall the overflow plug and tighten to 16-18 ft-lb. Reinstall the fill plug and washer and tighten to 27-33 ft-lb. Hyundai recommends changing ATF every 60,000 miles.
