Heated and Ventilated Seats
Thread Starter
4th Gear
Joined: Aug 2025
Posts: 4
Likes: 3
Heated and Ventilated Seats
Bought a 2015 RX 350 Base about 3 weeks ago. Only 69K miles. Heated and ventilated seats barely work. Seats get just warm on highest setting and highest ventilation seating is barely noticeable. Something wrong or is this normal?
Racer
Joined: May 2006
Posts: 1,987
Likes: 599
From: NC
Cannot speak to the heated seats because I despise that feature and never use it. As for the ventilated seats, I have always believed it is just a gimmick. The ventilated seat feature in my wife's 2015 RX350 has never done anything during our ownership (we purchased the vehicle in late October 2018).
Instructor
Joined: Jul 2025
Posts: 945
Likes: 154
Never used it in the wife's RX. It's hot here in August. I wouldn't expect much. If I lived up north in February 'just warm' might feel pretty damn good!
Pit Crew
Joined: Aug 2025
Posts: 213
Likes: 60
From: AB
Haven't checked seat heating but seat cooling works good in this car which has new cabin air filter and seems to depend on AC fan setting and closing some of the dash and rear seating area vents.
Last edited by 6runner; Aug 31, 2025 at 03:07 AM.
Instructor
Joined: Nov 2015
Posts: 1,048
Likes: 351
From: Atlanta, Georgia
The seat cooling feature works just fine in my 2015 Rx350, however you got to change the cabin air filter for proper air flow. An old clogged up cabin filter will reduce how much air flows to the seat from the blower.
As for your seat warmer, you may have a bad heating element in the seat itself that needs replacing or maybe the control switch is bad.
My heated seats get very hot quickly.
As for your seat warmer, you may have a bad heating element in the seat itself that needs replacing or maybe the control switch is bad.
My heated seats get very hot quickly.
Last edited by carguy75; Aug 31, 2025 at 02:07 AM.
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Intermediate
Joined: Apr 2017
Posts: 288
Likes: 114
From: CA - California
The seat cooling feature has nothing to do with the cabin air filter, the seat fan isn't even tied to the HVAC system. It pulls air from under the seat, in the rear seat toe box, and there are even 3d printed vents available to redirect the rear seat foot vents into the seat fan. You can pull the entire seat out of the car and you never have to disconnect any vents. The seat heat and cooling is self contained within the seat other than the controls and power/wiring.
Last edited by N4TECguy; Sep 1, 2025 at 10:17 AM.
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9th Gear
Joined: May 2025
Posts: 9
Likes: 0
From: Texas
Really? Where can I find such? I have been thinking of a way to do exactly that.
Intermediate
Joined: Apr 2017
Posts: 288
Likes: 114
From: CA - California
https://www.etsy.com/listing/1684627...03baef83e456dc
Instructor
Joined: Nov 2015
Posts: 1,048
Likes: 351
From: Atlanta, Georgia
The seat cooling feature has nothing to do with the cabin air filter, the seat fan isn't even tied to the HVAC system. It pulls air from under the seat, in the rear seat toe box, and there are even 3d printed vents available to redirect the rear seat foot vents into the seat fan. You can pull the entire seat out of the car and you never have to disconnect any vents. The seat heat and cooling is self contained within the seat other than the controls and power/wiring.
I do remember repairing an Genesis G80 cooled seat that was not working due to duct that goes to the seat fan being split which required just some ducting tape to seal up and the seal cooling function worked again.
Maybe the same can be said of the RX350 poor performing cooled seat, maybe the duct to the seat fan came loose or is damaged.
Last edited by carguy75; Sep 1, 2025 at 11:12 PM.
Rookie
Joined: Mar 2014
Posts: 38
Likes: 7
From: Texas
Mine work great and I use them all the time in Texas.
Air flow isn't as good as later models, but the newer cars have a noisy fan.
It's one of my favorite features.
Check to make sure your undersea vents aren;t covered up by loose paper or something else.
One of mine was when I first got the car. Also, rear floor mats sometimes work their way under seats.
Air flow isn't as good as later models, but the newer cars have a noisy fan.
It's one of my favorite features.
Check to make sure your undersea vents aren;t covered up by loose paper or something else.
One of mine was when I first got the car. Also, rear floor mats sometimes work their way under seats.
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