Windows and Glass: Description and Operation

On year model 1994, heat absorbing glass is introduced to windscreen and windows. This facilitates cooling of the cabin.

The glass absorbs heat radiation from sunlight so that is does not get in to the cabin. If the car is stationary, it still becomes warm in the cabin as the windows become warm (e.g. when parking in sun). When the car is moving, the passing air removes heat from the windows.

The solar sensor is of course affected by the fact that the glass lets through less heat. A new solar sensor has been introduced for cars with the heat absorbing glass and the old sensor is still used in those markets which do not use this glass.