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Light Sensor

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Posted by Tom Cole on April 4, 2007, 12:18 am

Does anyone know what the light sensor at the front corner of the
dashboard top is for?

It is mentioned in the handbook in the section describing the air
conditioning, under "Tips" - basically "don't cover the sensor".

I can't think why the a/c needs to know whether it's light or dark

Posted by mrv@kluge.net on April 4, 2007, 1:13 am

It's the solar gain sensor for the climate control system.

The climate control system uses some form of fuzzy logic to decide the
auto climate control settings.

You'll probably feel warmer with the noonday sun beating down at you,
than if it was overcast outside, even for the same outside
temperature.  The same sun that makes you feel warm will also be
trying to warm up the interior (so in the summer with the AC on the AC
would have to be on cooler or a faster fan speed than if it wasn't

Posted by Elmo P. Shagnasty on April 4, 2007, 11:06 am

It's also the auto headlight sensor, for cars so equipped.

Posted by mrv@kluge.net on April 4, 2007, 1:43 pm

I thought that there was a separate light sensor for the auto
headlights in Canada?

Posted by Tom Cole on April 4, 2007, 10:55 pm

Thanks for the explanation. This car is amazing!

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