NHTSA Service Bulletin 10218675: 2021-2023 Kia Seltos
Official manufacturer communication context for 2021-2023 Kia Seltos, with affected products, buyer checks and links into Carchieve recall, problem and VIN research.
Reviewed June 2026 from NHTSA manufacturer communication and service bulletin records. Carchieve is independent and not affiliated with any vehicle manufacturer or government agency.
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.
What this bulletin may mean before buying
Treat this as service research, not a verdict on one car. Before you buy, compare this communication with official recall campaigns, model-level owner complaint patterns, and the exact vehicle’s VIN-decoded specifications. A bulletin can help you ask a seller or dealer sharper questions about software updates, known repairs, warranty extensions and service history.
Affected products listed in this communication
Buyer checklist
- Run the 17-character VIN and confirm the year, make, model, engine and equipment match the listing.
- Check recall campaign pages for safety actions that may require dealer repair.
- Compare this bulletin with common problem pages for the same model and component area.
- Ask the seller or dealer whether the bulletin procedure, update or inspection has already been completed.
- Use the used-car buying checklist and get an independent inspection.
Frequently asked questions
What is NHTSA service bulletin 10218675?
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,.
Is a service bulletin the same as a recall?
No. A recall is a safety campaign with a required remedy for affected VINs. A service bulletin or manufacturer communication usually describes diagnostic, repair, software, warranty or service information.
How should a used-car buyer use this bulletin?
Use it as a research signal. Compare it with recalls, owner complaints, service records, a VIN report and an independent inspection before buying.
Check the exact VIN before you buy
Model-level pages show public safety patterns. A full VIN report helps confirm the exact vehicle, decoded specs, recall applicability and buyer checks.
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