Heated seat quit working

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Dec 9, 2025 | 10:47 AM

bvshearz

Thread Starter

Rookie

Joined: Dec 2018

Posts: 29

Likes: 2

From: KY

Heated seat quit working

The wife's 2020 ES 350 has started a seat issue. BOTH driver and passenger side lower SEAT cushion does Not heat up. However the back/upper part of the seat on both sides still heats up. I have NOT checked for a bad fuse yet. I have called the dealership and it is NOT under warranty . From what I've been able to find is that most likely the seat cushion itself has malfunctioned and needs replaced? Anyone had this problem/ and fixed ?

Dec 10, 2025 | 10:09 AM

TechNut

Pole Position

Joined: May 2013

Posts: 2,903

Likes: 845

From: Idaho

Quote:

Originally Posted by bvshearz

Seems unlikely that both driver’s and passenger’s identical seat heaters would fail at the same time. I would look for something common to both, like your initial fuse suggestion. Unfortunately, I. Am not familiar with the electrical system and cannot offer help, but I know there are some here that should be able to offer useful suggestions.

Dec 12, 2025 | 07:33 AM

JOELinVA

1st Gear

Joined: Nov 2025

Posts: 1

Likes: 0

Quote:

Originally Posted by bvshearz

I'd like to invoke back only heating on demand; i.e. my back is tight but don't want to cook my butt.

Dec 12, 2025 | 11:13 AM

Myshkyn

Intermediate

Joined: Oct 2022

Posts: 285

Likes: 110

From: California

The bottom portion of my seat stopped heating. Took it in to the dealer and they fixed it on warranty. They diagnosed it as a an inoperative heating element. Supposedly, if it had not been on warranty, they claimed it would have been in the neighborhood of a $3k repair because they had to remove the leather from the seat to get at the heating element. Apparently very labor intensive.