S-TT-0075-13

Tech Tip S-TT-0075-13
Subject
October 28, 2013
Market
USA
Spots in Window Glass
Service Category
Section
Vehicle Exterior
Window/Glass
Applicability
All Models
APPLICABLE VEHICLES
2008-2014
2013-2014
2005-2014
2012-2014
xD
FR-S
tC
iQ
2013
2004-2006, 2008-2014
2004-2006
iQ EV
xB
xA
CONDITION
The appearance of spots in tempered glass (when viewed at certain angles) is the result of the heat
treating and quick quenching process during manufacturing.
 The condition appears as faint shadowy spots and or lines in the glass.
 They become visible in the transmission and in reflection of light off the glass surface.
 The condition is more visible when viewed from an angle, rather than directly facing the glass.
 When polarized sunglasses are worn, they can dramatically enhance the appearance of the
spots and lines.
 The spots seem to be easier to see on a sunny day when the light comes from a blue sky or is
reflected from clouds. They are less visible on a gray, cloudy day.
 Tempered or heat treated glass can be found on the vehicle side and the back glass areas.
 An example of how the phenomenon appears is shown below.
RECOMMENDATIONS
This is a normal phenomenon for tempered glass and glass exhibiting the condition outlined above
should not be replaced.
Expires On
Ver. 2.1 8/28/2011 S
10/28/2014
© 2013, Toyota Motor Sales, USA
Page 1 of 2
Tech Tip S-TT-0075-13
October 28, 2013
Subject
Market
Spots in Window Glass
USA
Applicability
All Models
LINK REFERENCES
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Expires on
Ver. 2.2 09/06/2013 S
10/28/2014
© 2013, Toyota Motor Sales, USA
Page 2 of 2