
Owners of a popular electric crossover asked this twice this year in an owners’ community. One noticed tiny grains stuck in the holes after four months. A vacuum and soft brush weren’t getting them out. Another posted a photo of yogurt in porous seats. A truck owners’ forum asked about crumbs where a young child sits.
The replies ran from vacuums and lint rollers to toothpicks and compressed air. Here is what carmakers’ manuals actually say.
Why the holes clog
On a ventilated seat, small vent holes in the cushion and seatback let air through. One carmaker’s manual says liquid spilled on the seat may block the air vent holes so they don’t work properly. The maker’s manuals also say never to clean the seats with a solvent such as paint thinner, benzene or alcohol.
That’s why sprays are risky. Liquid that pools in a hole takes dissolved dirt with it. Another of the same maker’s manuals says not to get the seat wet, because it may change the nature of the leather. It also says to avoid wiping with a wet cloth, which may cause the surface to crack.
Are your seats new, with a slick, shiny finish? That’s a different problem. See how to clean new leather seats without making them slick.
A routine that keeps holes clear
| Step | Do | Skip |
|---|---|---|
| 1. Dry debris | Vacuum regularly to lift dust and sand | Pins, toothpicks, stiff brushes |
| 2. Wipe | Microfiber lightly dampened with cleaner | Spraying the seat directly |
| 3. Motion | Gentle circles over a whole panel | Scraping, rubbing or scrubbing one spot |
| 4. Spills | Blot fast with an absorbent cloth | Letting liquid sit in the holes |
| 5. Dry | Let it dry fully, fans off | Steam, or running vent fans while wet |
Dry debris first. One carmaker’s manual says to vacuum leather seats periodically to remove dust and sand, which prevents abrasion. Grit in a hole acts like sandpaper every time you slide in. Vacuum before any cleaner touches the seat, so you don’t turn dust into mud.
Put the cleaner on the cloth. An EV maker’s manual says to use a microfiber cloth lightly dampened with a cleaning agent. Clean in gentle circular motions. The same manual warns never to spray cleaner directly on the sides of seats with side airbags. Spraying the cloth keeps liquid out of both the holes and the airbag seams.
Clean the whole panel. That manual adds that cleaning only spots can leave water rings or other marks. It also says never to scrape or rub dirty surfaces. Sharp objects or abrasive materials can damage the vehicle, it says. That’s a good reason to put down the safety pin.
Skip steam. The same EV maker’s manual says not to use a steam cleaner on leather. Forum posters praise steam vacuums, but the maker’s word wins on your car.
Dry before you cool. One carmaker’s manual covers spills on a ventilated seat. Wipe the seat completely with a dry towel before using the air ventilation seat. The EV maker says to let leather dry fully before further use.
Sunscreen, sweat and summer
Cooled seats earn their keep in places like Tucson. NOAA’s 1991–2020 normals put the average June high there at 101.2°F and July at 100.2°F. That heat comes with sunscreen and sweat, and both end up in the holes.
One carmaker’s manual covers sunscreen directly:
- Put cleaning cream on a cloth and wipe the area.
- Wipe off the cream with a wet cloth.
- Dry it with a dry cloth.
For coffee or soda, it says to use a small amount of neutral detergent. Wipe until the mess no longer smears. It also warns that high-alcohol or acid and alkaline cleaners can fade leather or strip its surface. Keep that in mind with sanitizing wipes. For hot-car interiors more broadly, see what protects your interior in hot states.
Check your material and warranty
Check what your seats are made of before you buy a cleaner. The EV maker’s manual says its leather advice applies only to real leather. Look-alike materials have separate care recommendations. It also says to use only cleaning agents the maker recommends.
Normal wear isn’t a defect either. One carmaker’s manual says wrinkles or abrasions are not covered by warranty. Read your own manual’s seat care pages before you try anything stronger than a damp cloth.
When to call a detailer
Book a pro when a spill has soaked in, smells or has dried inside the holes. Ask how they’ll keep liquid out of the perforations and whether they plan to use steam. If the spill was milk, the smell may be the next problem. Our guide to getting specific smells like spilled milk out of a car covers that part.
To see which packages include seat work, read interior detail price tiers. Then use how to find a reliable mobile detailer to vet who you hire.
How we checked these facts: see our methodology.
Sources
Based on 7 sources · How we price
- Kia, 2024 Sorento Owner’s Manual (US), Air Ventilation Seat: ownersmanual.kia.com/full_webhelp/MQ4A/2024/en_US/topics/chapter4_30_3.html
- Kia, 2024 Sorento Owner’s Manual (US), Feature of Seat Leather: ownersmanual.kia.com/full_webhelp/MQ4A/2024/en_US/topics/chapter3_2_1.html
- Kia, 2024 Sorento Owner’s Manual (US), Interior care: ownersmanual.kia.com/full_webhelp/MQ4A/2024/en_US/topics/chapter8_19_2.html
- Kia, 2023 Sonet Owner’s Manual, Air ventilation seat: ownersmanual.kia.com/full_webhelp/QY/2023/en_RG/topics/t00239.html
- Polestar, Polestar 3 Owner’s Manual (US, 2025), Cleaning leather: polestar.com/us/manual/polestar-3/2025/article/6fdf36add3a6b2e5c0a8cc37701076aa-c8ff5107ce070f08c0a8b04a09c119b9-8664b2fa77a7e089c0a8296870d1a409
- NOAA NCEI, U.S. Climate Normals 1991–2020, Tucson International Airport (USW00023160), monthly normal high: ncei.noaa.gov/access/services/data/v1?dataset=normals-monthly-1991-2020&stations=USW00023160&dataTypes=MLY-TMAX-NORMAL&includeStationName=true&format=csv
- Community discussion, Cybertruck Owners Club forum: cybertruckownersclub.com/forum/threads/how-to-clean-the-holes-in-ventilated-seats.55694


