VOLUNTARY SERVICE CAMPAIGN: TRANSFER CASE LEAKAGE/OVERHEATING WHEN USING SPARE TIRE (SC242) - This bulletin provides the procedure to inspect the front wheel transfer assembly for oil leakage and update the 4-Wheel Drive (4WD) (also referred to as All-Wheel Drive [AWD]), coupling operation logic software on certain 2021-2023MY Seltos (SP2) AWD vehicles equipped with Nu 2.0L MPI engine, produced from November 20, 2019 through May 18, 2022. Some of these vehicles may exhibit a front wheel transfer assembly oil seal leak, oil burning smell, and possible smoke due to the transfer case overheating when using the spare tire. This may be caused by AWD ECU software detection logic not detecting the installed spare tire, which would normally limit transfer case usage/operation. If the spare tire is in use and not detected, transfer case oil temperatures can rise, and a burning oil smell can be detected.
