Heated seat doesn’t work but light stays on.

[lordtofthekill]

Hi first time poster but long time lurker. I’ve got a 2011 screw that I’ve had for 2 or so years now. The heated seat on the passenger side works great but the driver side hasn’t worked since I bought it. My issue is the light stays on when you press it for the driver side, every issue I’ve seen with a heating pad the light goes off after a few seconds because it detects a short but mine stays on and just doesn’t heat up. I’ve checked the connectors and added dielectric grease to all the connectors under the drivers seat thinking it might be a loose pin. I checked voltage going to the seat pad connector and got a low voltage read but that could have been because I wasn’t getting a good connection with the pins. Hoping I can fix it as it’s getting cold locally and having a nice heated seat in the morning would be great. Any suggestions on what to check next? Couldn’t find any fuses or relays for just the drivers side heated seat element or I’d check those. Thank you!

 

[Nex]

Welcome to FRF. Please post pictures of said prius with heated seat issues. How many miles? What does the seat look like? Odds are the seat elements.

 

[mprice1234]

^^^^
Welcome, yes, the heating element only goes out when it gets cold out!

 

[lordtofthekill]

Welcome to FRF. Please post pictures of said prius with heated seat issues. How many miles? What does the seat look like? Odds are the seat elements.

174,*** miles, seat is in good condition no tears or damage to it, wiring is good under it as well as far as I can see.

 

[Nex]

174,*** miles, seat is in good condition no tears or damage to it, wiring is good under it as well as far as I can see.

Run an ohms test on the seat element. Might have an open.

 

[Gumby]

Run an ohms test on the seat element. Might have an open.

This^^^^^^ if open. that is no bueno

 

[lordtofthekill]

Run an ohms test on the seat element. Might have an open.

Between which wires on the connector? I ran an ohm test on it first to check for an open and got continuity between the grey wires but I don’t think I got any on the red to black.

 

[Nex]

Not sure which wires. Would need to check the book.

 

[lordtofthekill]

Not sure which wires. Would need to check the book.

I tried to find the info on prodemand at work but couldn’t fine much useful information about checking resistance at the connector

 

[Nex]

@FordTechOne, mind helping OP out with with wires to ohm test for the driver's heated seat element?