When i set the heater settings to cool and auto is off i feel a small amount of heat as if there is some coolant leaking into the heater assembly. I am curious what the problem is and if this is easy to fix?

This is not much of a problem right now since the weather has gotten colder but it would be nice to not feel a small amount of heat during the summer.

Andrew
1999 S70 GLT 130K miles

Antifreeze is always circulating through the heater core, it is the vents that keep it out of the cabin. A vent not closing completely is a real pain to fix. It could be the thermostat controls are not as cold as you would like and leaving the vent slightly open in manual mode.

Why are you in manual mode anyway?

Klaus
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Did you do your Random Act of Kindness today?

I am in manual mode because whenever my dad rides with me he changes the controls and i forget to change them back or i dont notice. But my dad says, i set the controls to cool and there is still heat my car doesnt do that there is something wrong with yours?

I wouldnt think the auto would do anything different when not wanting heat?

Andrew
1999 S70 GLT 130k miles

I'm with you brother.

I don't understand why Volvo designed the HVAC system the way it is on our 850.
I have the same issues that you have. It drives me crazy.

I don't leave the blower on AUTO because I don't like having the blower running all the time. I just don't like the constant fan blowing in my face, feet, windshield etc. Maybe I'm just a control freak.

If only they just used a regular heater control valve I'd be happy. I think automatic climate control in an automobile is a gimmick. Kind of as silly as headlight wipers, but that's another issue.

Leave it in ATUO mode for the blower as well as vents, and tell your Dad to just change the temperature on his side.

The system WILL mix warm air if the auto is off, unless you set the temp to the coldest setting.

Klaus
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Did you do your Random Act of Kindness today?

Hi Klaus,
Thank you for the information. I will try it. There are times where i dont want the fan on.

So i would have liked to have a manual over ride option

Andrew

1999 S70GLT 130k miles