air con

[JAP MAN]

Hi  ive got a IS250 2009 love it to bits but i dont know when the air con is on or off    is it on when display button is lit up blue ?  blue for cold  . can i have the window demist on blower without air con    THANK YOU

[Linas.P]

Aircon is ON when A/C button light is ON... normally it is sort of ~green.

Just note - demist does not work very well without aircon...

[Herbie]

2 hours ago, JAP MAN said:

Hi  ive got a IS250 2009 love it to bits but i dont know when the air con is on or off

Surely you can tell by the temperature of the air coming out of the vents without needing to look at the lights?

If you really can't tell then it could be a sign that the refrigerant has leaked out of the system and it needs to be regassed.

[PCM]

You would also... hear a slight change in revs etc., when switched on.

Is there a small glass inspection 'window' under the bonnet you can view?

[J Henderson]

If the "A/C" button is lit (green illumination), it's on.

On cars without a navigation screen, it's a physical button on the dashboard. When the nav unit is equipped, it's toggled on/off via a digital button on the Climate screen.

PS. For best results IMO, just leave it turned on all the time in auto mode and use the windscreen demister as and when needed.

Edited October 27, 2022 by J Henderson
Typo