My heater seems not to be working correctly. When you crank it all the way you get heat sometimes. But once I try to turn down the temperature it goes cold. It's very annoying. What seems to be the problem?

 

Check the DIY section for the repair, see if your symptoms match.........

S

 

theres a thread on this already of how to reset it. Search because i dont remember what it was called.

 

Take a look at the excellent post by Wingnut at https://www.rx8club.com/series-i-do-yourself-forum-73/diy-no-heat-repair-heater-control-158200/. That will probably fix your problem.

 

Thanks! That was very helpful.

 

nice first post RX8geek.

 

dude iam having the same problem also 2005, its really annoying now days since its cold.

 

It is still covered by warranty as long as there's no aftermarket parts installed. I was lucky i didn't start modifying yet

 

I had the same prob just took it to the dealer =/

 

i have the saME prob mine is 05

 

So maybe follow the links given and post up any problems you have that are not solved by the above...

 

I had the same problem with my 2005 w/ 23k miles a few weeks ago. I took it to the dealership and they were gonna charge around 300 for the fix. I looked at the DIY and took about 2 hours of my time and fixed it.

 

I brought mine to the dealer and I had an expired warranty. They replaced the whole unit for me for free and said it was a manufacturing defect. I didn't have any mods on/in my car so it was all good. Man was I relieved. They said it's gonna mess up over time on you when it's turned to the heater and the ac button is on. That's what happened to me. The ac button would be on for some reason sometime. Maybe by accident. It would run like this for minutes and I would be unaware. I hate that button. Arrgh.

 

What sort of mods are you planning for your Heater???
Their explanation is most likely BS. The defect is a terrible soldering job making the connections for the heating/cooling potentiometer very brittle and prone to breaking. Not sure they ever got this right, so you may run into the same problem with the replacement eventually.

 

Dammmmnnnn...just spent $500 at the dealer the day before reading this thread. Luckily enough I still have the old unit. If I do the repair myself, do you guys know if Mazda dealers have a return policy on their parts lol?

 

on my rx8 it throws hot air threw the middle but not on the driver or passanger end. any idea why anyone???