2016 with heated/cooled seats. The seats have worked fine until last week when they stopped working on both sides (driver & passenger). Control panel lights still work. Tried replacing the fuse and still nothing. Any suggestions?

 

As much as I hate going to the dealer, if it is still under warranty, I'd have them fix it.

 

If the heat works but not the cool, check if your Mustang air conditioner puts out cold air. Mustangs (including mine) are having a problem where the evaporator core is failing.

 

Neither is working. No heating/no cooling on either side. And out of warranty.

 

Check the fuse my friend. With both being out, that could be your culprit. I hope it's that simple for you.

 

did you ever figure out what caused the problem?? Having the same issue now ..thankss

 

Hi, Did you ever find out the reason?

 

Are both seats not working? If it is only one try the Mini relay under the driver side dash.

 

I read an article about issues with the heated/cooled seats not working because the ground connection, located in the harness plug under the passenger seat, is not heavy enough to carry the load when both seats are heating at the same time in the max setting. The plug has a 12 pin connection. 11 of the pins are used and one is blank. I saw pictures in the post showing the harness unplugged and the ground pin was badly burnt.
I have a 2017 EcoBoost premium convertible that I just bought last September. The heated/cooled seats don't work, even though the control on the console lights up (on both sides) and looks normal. I checked the plug under the passenger seat and sure enough the ground wire pin was badly burnt, just like in the pics I saw online. Ford sells a kit for the repair that comes with a new plug, splice connections, to be soldered, and shrink wrap for the connections. The kit costs about $65 online. Probably more at the dealer. I'm wondering, if I buy the part and go to the trouble of replacing it, soldering all the wires and so forth, what will keep it from reoccurring? And would it be OK to simply clip the ground wire on either side of the plug, and then provide a heavier connection for just the ground wire, soldering and extending the wire as needed, installing a heavier plug for the wire, and protecting it in case of heat build-up in the future? It would be less work, cost much less, and hopefully be a much better connection. Any thoughts or suggestions?

 

I hate to break it to you but the Mustang along with most vehicles does not truly have air conditioned seats. It is just air flow/vent. The evaporator for the air conditioning system does not provide air for the seats. A simple wiring diagram will confirm this.

 

Welcome to TMS,

If you would Like, Go to the Introduction Page and Tell us About You & Your Stang! Love to Hear Your Story!

Just an FYI, Not an Issue Posting on and Old Thread. We Always Like to Update Topics. Some Devices Don't Show the Date Very Well and you may not Be aware That your Reply was to a 2018 Post and 15 Stang has not been Active Since 2019. Not a Prob. I have Done it Myself. Back in the Day People Loved to Put Snarky Remarks when this Happens. I have been working to change That. We are All here to Learn & Share.

KC

 

Correction! 15BluStang's last activity was from 3.5 years ago.. Therefore, you may not receive a response from him or her anytime soon... Meanwhile, it would be really appreciated if you wouldn't mind introducing yourself in the introductions sub-forums and tell us a little bit about yourself, such as what year and type of Mustang you own along with any mod upgrades you may have done... In the meantime, welcome aboard...

 

Thanks Rocky!

KC

 

Thank you Kevin!

 

by replacing the harness plug what is preventing the overload from happening again..?

 

I have same problem, same question. Will it just blow again. Did you receive any response?

 

@Bob Gentner

As an FYI, I Am Posting the 2016 Mustang Seat Shop Manual Section. Also Related Seat TSB.

If There is a Component Issue In the Seat System then Yes it will Likely Burn Again. The Band Aid Approach is to Not Run at Max Speeds which Should Be Less Likely to Overheat Connection.

To Properly Repair See The Diagnostics Required to Pin Down. Need Proper Tools & Knowledge to Check. Sorry Don't Have an Answer as Requested for the Easy Fix. Usually the Same Parts will Fail on the Same Type of Car so a Pattern Happens. Sorry I retired from Ford Before I saw this Becoming an Issue! Anybody Out There Gone Through This Please Chime in!

Back in the Day we were Always Selling Fan Switches & Pigtails for the 73-79 F-series Trucks. If you Ran Them on High all the time they Would Fry. Drop Down a Notch and They Would Live a Lot Longer. Just an FYI.

KC

 

Old post, I know, but just adding incase someone stumbles across this in the future…..replacing the plug has you connecting the single ground wire (Harness side) to TWO adjacent ground wires (New pigtail/plug side) due to their being an unused ground pin in the module. Having the ground span two plug pins on the module helps spread the load, which in theory will keep the problem from resurfacing. Worked on mine, fixed the problem immediately! About 30 minutes work, a little dielelectric grease on the new plug, been working perfectly ever since. Hope this can help someone 👍🏻