Air Conditioning System

t4citurn · January 16, 2016

My air conditioning system does not seem to change from internal circulation to outside air or vice vers at all. Is this normal?

On my old IS250, when in 'Auto' the system to change between the two regularly and in fact would go into internal circulation as soon as you were doing crawling speed or in a tunnel. The IS300h seems just to stay in the internal circulation all the time.

I have it on 'Auto' with 'A/C'.

Anyone?

Steve44 · January 16, 2016

There is a setting in the Setup menu/vehicle/Lexus customisations, to use Eco settings for ventilation where it should swap back/forth at what it deems is best to meet eco targets. It's explained in the manual, but to be fair, the list of requirements (car, temp, settings, atmospherics, alignment of moon phase, hormonal levels etc etc... ) it needs to do it seem long and complex as mine hardly ever swaps either......

t4citurn · January 20, 2016

On 16/01/2016 at 0:15 PM, Steve44 said:

There is a setting in the Setup menu/vehicle/Lexus customisations, to use Eco settings for ventilation where it should swap back/forth at what it deems is best to meet eco targets. It's explained in the manual, but to be fair, the list of requirements (car, temp, settings, atmospherics, alignment of moon phase, hormonal levels etc etc... :whistling: ) it needs to do it seem long and complex as mine hardly ever swaps either......

Don't seem to have this in the Setup menu?

Steve44 · January 21, 2016

Maybe it's a Premium Nav option only. You need to have the car running to see it.

t4citurn · January 21, 2016

8 hours ago, Steve44 said:

Maybe it's a Premium Nav option only. You need to have the car running to see it.

I have this when the system is on. But this has not made any difference???

rayaans · January 21, 2016

My RX has an "Auto" setting button for the recirculation/outside air. I don't think the IS has this function

Steve44 · January 21, 2016

5 hours ago, t4citurn said:

I have this when the system is on. But this has not made any difference???

As I said above it will do it, I've seen it do it, but the list of criteria it must use to determine when must be so specific I've only seen it a couple of times in 18mths of ownership. I usually just press the buttons on the dash and leave it on outside air.

DanD · January 22, 2016

On ‎21‎/‎01‎/‎2016 at 6:56 AM, Steve44 said:

Maybe it's a Premium Nav option only. You need to have the car running to see it.

Steve, I see you have the seat heater set to manual. Ever switched this to auto? I drove a GS for a while, which had this set to Auto... it seemed to take into account interior and exterior temperature and climate control settings and adjust the seat heater accordingly and worked brilliantly.