Question, Dont Know What This Thing Does

[immax01]

I bought a 1995 ES300 a week ago and its great, i just want to know what that little round red thing under the center of the windshield is. I looked all over the manual and it doesnt mention it at all.. so im just curious.. Thanks. If i sound crazy and no one knows what im talking about, i can take a picture sometime.

[lexusk8]

I remember this was discussed long time ago. If I recall correctly, it's either a sensor/transmitter piece for your remote master key fob when locking/unlocking doors, or something related to your climate control system.

[amf1932]

It's one of the sensors for the 'climate control' that makes fine temperature adjustments for the operation of this system.

[steviej]

It's one of the sensors for the 'climate control' that makes fine temperature adjustments for the operation of this system.

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that's what I thought, too.

steviej

[chadmg7]

Make sure you keep the sensor clean and dust-free. A friend of mine had some stuff covering his sensor (without realizing it) and he couldn't figure out why the A/C wasn't very cold. Once he removed the debris from the dashboard... problem solved.

[SKperformance]

The little red globe on the dash is a "solar sensor".

It is a solar panel that lets the hvac ecu know how much sun is facing the driver, it then activates a certain amount of air driected through the vents to cool the front passengers faces more if needed.

It should not change the temp of the hvac sytem,.