Get the latest advice about your car

Get Started
Advice » Problem Reports » New Climate Control Unit if Heat/Cold Knob Won't Adjust to Right Temp

Problem Reports

Mazda RX-8

Report: New Climate Control Unit if Heat/Cold Knob Won't Adjust to Right Temp

Mazda RX-8 Problem
28 Reports

Model Years Affected: 2004, 2005, 2006, 2007, 2008, 2009, 2010

Average Mileage: 61,043 mi (20,000 mi - 100,000 mi)

Verified

If the climate control's heat/cold knob is not adjusting to the desired temperature, a new climate control unit may be needed.

  • Report #1
    Visitor, 2005 Mazda RX-8, 45,000 mi

    no heat even when turned to high heat you have to wiggle switch to work

    Flag This
  • Report #2
    Visitor, 2005 Mazda RX-8, 45,000 mi

    The heater control is not working...It's winter and all I get is cold air...No heat

    Flag This
  • Report #3
    Visitor, 2005 Mazda RX-8, 65,000 mi

    Temp control does not work

    Flag This
  • Report #4
    Visitor, 2004 Mazda RX-8, 61,000 mi

    climate control heat not holding setting. Cd player skips

    Flag This
  • Report #5
    Visitor, 2005 Mazda RX-8, 55,000 mi

    Climate control unit broke. No heat. They cannot rebuild my part so I have to pay $414 for a new one. DO NOT BUY THIS CAR.

    Flag This
  • Report #6
    Visitor, 2004 Mazda RX-8
  • Report #7
    Visitor, 2004 Mazda RX-8, 60,000 mi

    Have to jiggle the temp. control knob to get either hot or cold. Sometimes when I finally get it on one or the other, it will switch to the opposite temp (ex: have it on hot and it will just switch to cold on its own). Cannot have any temp in between (so either HOT or COLD).

    Flag This
  • Report #8
    Profile_thumbnail
     Rookie

    The heater controls in my car work off and on. I took it in for repair to the Mazda dealership and they were well aware of the issue. It is not recalled officailly, but was told that I could either pay myself or call customer service. (nightmare!) They would not cover it and it will be a $600 repair. This car is a lemon.

    Flag This
  • Report #9
    lisa50, 2004 Mazda RX-8, 77,860 mi
    Profile_thumbnail
     Rookie

    Car blows out cold air when heater is on...you have to
    wiggle the temperature button...blows out very hot air when a/c is on in the summer time.

    Flag This
  • Report #10
    Visitor, 2004 Mazda RX-8, 34,000 mi

    Hot air with air conditioning, cold air with heat. Wiggle knob and rotate to get correct temp. It sometimes takes a while to get the temp I am asking for.

    Flag This
  • Report #11
    Profile_thumbnail
     Rookie

    Dealer wants to charge me $650 to replace it.

    Flag This
  • Report #12
    Visitor, 2004 Mazda RX-8, 70,000 mi
  • Report #13
    Visitor, 2005 Mazda RX-8, 28,000 mi

    Climate control is messed up.

    Flag This
  • Report #14
    Visitor, 2005 Mazda RX-8, 50,000 mi

    A/C knob doesnt work. Only goes from 0 to 16 and nothing in between and you have to jiggle it and mess with it to get 16. This is clearly a common problem from the design of the car and should be recalled. Needless to say this and other problems with the vehicle (condensation in the taillights etc.) will make sure I never buy another Mazda. I love the car, but the service and poor design doesnt make it worth it.

    Flag This
  • Report #15
    Visitor, 2004 Mazda RX-8, 100,000 mi
  • Report #16
    Visitor, 2005 Mazda RX-8, 78,000 mi
  • Report #17
    Visitor, 2004 Mazda RX-8, 90,000 mi

    heater knob does not control heat prperly. i have to tap it with somthing hard to get it to work(sometimes)

    Flag This
  • Report #18
    Visitor, 2004 Mazda RX-8, 90,000 mi

    Erratic temperature fluctuations. Wiggle knob or wires behind (up through the ashtray door). Have not repaired.

    Flag This
  • Report #19
    Visitor, 2005 Mazda RX-8, 20,000 mi
  • Report #20
    Visitor, 2006 Mazda RX-8, 65,000 mi

    I had the same issue where jiggling the knob was the only way to change the temperature. The solution isn't really difficult. It'll take about an hour and a half. You have to remove the radio/climate control faceplate, then disconnect and remove the climate control unit. Disassemble it all the way down to the circuit board. There, the temp control knob will have 3 pins that go all the way through the board. If you look at the back side of the pins you'll notice: 1) There isn't much solder on it, 2) The solder is cracked. Just add more solder to the pins. I used Rosin based. Reassemble and test. Worked like a charm for me. Even if you've never done anything like this before, give it a try. You'd be surprised how easy it is.

    Flag This
  • Report #21
    Profile_thumbnail
     Rookie

    I had the same issue where jiggling the knob was the only way to change the temperature. The solution isn't really difficult. It'll take about an hour and a half. You have to remove the radio/climate control faceplate, then disconnect and remove the climate control unit. Disassemble it all the way down to the circuit board. There, the temp control knob will have 3 pins that go all the way through the board. If you look at the back side of the pins you'll notice: 1) There isn't much solder on it, 2) The solder is cracked. Just add more solder to the pins. I used Rosin based. Reassemble and test. Worked like a charm for me. Even if you've never done anything like this before, give it a try. You'd be surprised how easy it is.

    Flag This
Ask a Question