oldManTan

so when summer comes around, my seats feel like they're always being heated! the entire interior of the car is fine but the seats are unbearable, i have to sit up and let some air go on my back to cool down. i dont even want heated seats and i looked underneath and there's only one plug which i'm guessing controls the movement and the heat. is there a way to make sure the seats are for sure not being heated (besides getting aftermarket seats, i'm working on that). idc what it takes, cut wires, remove fuses, anything?

jimbosr1

if you can disconnect the plug from the bottom that will do it.then if the seat feels normal you can remove the seat and disconnect the plug for the heat control.
you can also check the seat heat switch which may be the problem.

oldManTan

does anyone elses seat, not using AC, feel really hot? could it just be the thick leather keeping all my body heat and multiplying it? it just seems so hot i have no idea how it could be from my body heat.

Photon440

iTrader: (3)

Just sit in the back seat which isn't heated and see if it heats up the same way for you.

oldManTan

good idea, i'll try that someday and have my girlfriend drive my car so i have the same "cooling" effect with open windows since i don't have any AC

t2d2

iTrader: (8)

I don't have heated seats, but my seats never feel hot relative to the rest of the cabin. Even when troubleshooting the extreme cabin heat (on the wrong side of 150°), the leather was never uncomfortably warm. I would actually consider the leather used on these cars to be pretty thin.

If you unbolt and tip the seat up, I think you can disconnect the two orange plugs for the heaters. I'm not 100% positive, but I recall them being accessible without tearing into the seat.

oldManTan

yea it's like the heat is leaking slowly, it's not getting as hot as when the seats are actually being heated, but it definitely gets really warm and unbearable.

scottaw001

Yes - There is an issue with unwanted seat heating. Here is an image of my 2015 IS 350 F-Sport with the seat heaters OFF and A/C on. Lexus says this isn't happening, but there is this...

Shrugy

iTrader: (12)

Thermal camera is a truly genius idea.

I need to test this on my own SC!

oldManTan

oh dang that's crazy! so i unplugged my seat and i'm not sure if it made a difference or not, i just got one of those taxi driver beaded seat covers lol, helps with the swass a little

SC400slide

iTrader: (11)

1. buy thermal camera

2. do what he ^^ did

t2d2

iTrader: (8)

Or pick up a cheap infrared temperature gun and compare the surface temp of the front and rear seats.

scottaw001

True. My $20 laser thermometer also picked up the hot spots.

bigwhite

I have a pair of cloth, manual, non-heated seats in my car. Today it was 70 degrees, and my back felt hotter than my seat. DKW

187

I think the hot seats has to do with the fact all the wind that comes into the car goes into the back and doesn't really hit the driver or seat.


All my other cars you can get a cross breeze going with the rear windows.