My Climate control needs to be turned up very high to make the heating come on (like to 30), and it doesnt seem to let fresh air in for cooling. It just seems really inaccurate. If you move it between say 22 and 26, the air temp doesnt feel any different.

Is the 3Gen climate control known for issues with the climate control?. Not sure how it works, but could it be a dusty interior temp sensor or something like that?

without me being overly helpful, whats the outside temp like when your setting it to heating?

only a couple of degrees lower than what you want or much more?
reason i ask, is that the climate control wont go full speed full heat to get to the heated temp you want if its only gotta raise the temp a couple of degrees to get to what you set it at.

and in regards to the recirc, does it ever go into fresh mode?
it will go into recirc mode to try and cool down the car faster with the aircon on, and once the temp has lower sufficiently / reached the desired temp, then it will go into fresh mode and just maintain the temp for you.

also - do you have a dash mat on the car? if its one that doesnt fit too well, it could be blocking the sun load sensor - this will effect its running as well, as it will think its not as sunny as it actually is, but will still be getting readings from its other sensors to say that yes it is actually hot out there.
reason i ask - i had to cut mine a bit, as the supercheap dash mat didnt really allow for the sun load sensor properly / fully on the dash, so i had to cut it a bit to make sure that it wasnt obstructed and wouldnt interfere with the running of the CC unit

hope that helps in some way.

Theres a black plastic tube in behind the stereo/climate fascia, that should be firmly attached to rear of the climate control box, you'll know where when you pull it out, just behind the temperature knob.

If thats not connected it can cause inaccuracies with heating because the sensor isn't getting an accurate reading of whats actually coming into the cabin, becomes affected by the temperature of the space behind the stereo, which is usually warmer than your cabin.

Theres a black plastic tube in behind the stereo/climate fascia, that should be firmly attached to rear of the climate control box, you'll know where when you pull it out, just behind the temperature knob.


In a TJ/KJ the tube is clear and ribbed, not black.

Thanks guys...all good comments.

Yesterday was about 20 degrees and cloudy outside - but i had to jack the CC up to about 27 to make the heat come on. No dashmat - so the sensor shouldnt be confused. Might pull the CC unit out though and make sure that sensor hasnt shifted to a hot spot.

Another thing that bugs me - do you need to have the CC on AUTO to make it look after the temp? - Becuase whenever i hit auto the AC comes on - so im assuming the AUTO setting is only for cooling - not heating and cooling..

if you have iot on auto, the cc will maintain the temp you set it at.

Ie, you press auto, set it at 21, the cc will heat/cool the car to maintain that temp. IMHO, you should leave the a/c running all the time anyway. you dont use that much more fuel and it keeps your windows clear when the heater is on. I only have a/c in my cars but the a/c switch is always set to on.

Hit the auto knob and then press the AC snow simbol button to set it to ECO mode. That way the aircon will be used sparingly and it will try to acheive the temperature that you set it to.

Parker, same **** different colour lol


Another thing that bugs me - do you need to have the CC on AUTO to make it look after the temp? - Becuase whenever i hit auto the AC comes on - so im assuming the AUTO setting is only for cooling - not heating and cooling..
Auto only controls fan speed the CC is always working based on your selected temperature. If you don't want the A/C on, set your temp and the fan speed yourself, then turn the fan down when the air starts to cool coming from the vents, thats usually the point when the cabin has reached the desired temperature.

Also the light sensor on the dash won't affect the temperature readings, once again it only affects fan speeds, based on the difficulty to get the car to the desired temperature. Shouldn't affect what temperature the CC gets the cabin to.

OK, Cool. So if i hit the snowflake till i get the ECO, then the AC wont stay on. Im not hitting ECO, so when i press Auto, the Aircon comes on and tries to fight the heater!

What was mitsi thinking with the CC on the Magna? Its the least intuitive CC ive seen. I shouldnt have to hit a second button - when you hit Auto i expect the CC to alternate betwen the AC and heater as required - not keep the AC on and adjust the heater around it.

I'm a bit confused what you're talking about, but in any case the climate control on my KH and now my TL works perfectly, either pumping out heat or cool when needed to keep the temperature at the set level.

Don't forget that when it's pumping out heat, it will do so into the footwell so it's not blowing in your face.

OK, Cool. So if i hit the snowflake till i get the ECO, then the AC wont stay on. Im not hitting ECO, so when i press Auto, the Aircon comes on and tries to fight the heater!
Even on Eco the AC is still on, just to a lower extent. Remember AC stands for Air Conditioning, than can be cool or warm, its just conditioned air. It doesn't really make much difference if its on or not, it'll still reach the set temp, just depends on whether you care if its regulating the fan or not I guess. Windows don't fog with the AC on either.

Even on Eco the AC is still on, just to a lower extent.

Actually it turns the air con compressor off and on intermitently. I always have mine on ECO.

The problem I've always had with the CC on my Diamante :-) is that when sent on Auto, but requiring heat, the system will start out by directing air flow to the floor, where heat belongs
But when the temperature comes up the system then shifts air flow out the dash vents into my face. That is really annoying in the winter (in Boston Massachusettes USA we get real winter...) since the last thing you want is cooled air, because that's what it is when the system thinks it's reached the selected temperature, smacking you right in the kisser.

When that happens I always have to shift to fully manual mode and direct the air flow back down to the floor.

Certainly not the best CC system ever designed.