Back to all

In the Hot Seat (Repair and Maintenance of Seat Heaters)

January 19, 2020

It's chilly outside. You flip on that switch that looks like a picture of a seat with little heat waves rising from it.  You expect soon you'll feel that warmth but… wait! It's not getting warmer.  Oh no, what's wrong with my seat heater? There could be lots of reasons it's not working, and it could be as simple as a fuse or as major as the heating element itself.  But it's something to leave to a pro to diagnose and repair.

Let's say it turns out to be a blown fuse.  Simply replacing the fuse may not fix it because there was a reason the fuse blew in the first place.  It's possible the on-off switch has worn out or corroded.  Perhaps the wiring connection isn't completing the circuit (could be corroded or full of dirt) or the voltage reaching the heating element isn't correct. 

There's a little sensor that keeps track of the seat heater's temperature called the thermistor.  When the seat is hot enough, it will stop the juice from heating it any more.  Sometimes those fail.  But if all of these components are healthy, you may need a new heater element. 

Those seat-heating elements are made up of wires that get sat on.  A lot.  That can put significant strain on them.  Putting something heavy on the seat can break them. Or, if you put your knees on the seat cushion as you're getting something in a rear seat, that can also damage the element.  Sometimes they can be repaired but often they have to be replaced.  And here is where the technician's expertise comes into play.  That heater element is attached to the seat's fabric and replacing it can be tricky.  It also can require disassembling a lot of the seat to access it. 

Seat heaters are a wonderful feature and they make your vehicle oh, so much cozier.  So keep them working and enjoy the warmth!

Tuffy Chicago (Diversey Pkwy)
1400 West Diversey Pkwy
Chicago, Illinois 60614
773-929-3622

More articles from Tuffy Chicago

Always on Guard (TMPS)

January 26, 2025

One of the most important things you can do to keep your vehicle running safely is to make sure your tires are properly inflated. If one or more is vastly over- or underinflated, that has the potential to cause major handling problems and may result in a dangerous accident. All vehicles in recen... More

Feeling Powerless (Why Is My Battery Light On?)

January 19, 2025

When one of your vehicles warning lights comes on, the first thing that comes to mind is, Oh, no, whats wrong now? When its the battery light, it means theres something wrong with your vehicles battery or charging system. And because both are important for your vehicle to work properly, its a go... More

Keeping Your Cool (Coolant leak repair)

January 12, 2025

If theres one thing you should pay attention to with your vehicle, its the temperature gauge. Its the one that may say C---H (that means cold---hot). Or maybe yours has a picture of a thermometer on it and a blue and red zone. If you see the needle heading farther to the H or red area, that mea... More