CX-7 AWD L4-2.3L Turbo (2008)
Windshield: Technical Service Bulletins
Body - Windshield Flaw/Scratch/Crack Information
Bulletin No: 09-002/10
Last Issued: 01/07/2010
Subject:
DIAGNOSTIC TIPS FOR WINDSHIELD FLAWS / SCRATCHES / CRACKS CAUSED BY EXTERNAL FACTORS
APPLICABLE MODEL(S) / VINS
2006-2010 MX-5
2004-2010 RX-8
2004-2010 MAZDA3
2006-2010 MAZDA5
2003-2010 MAZDA6
2007-2010 CX-7
2007-2010 CX-9
DESCRIPTION
Most flaws, scratches and cracks on the surface of the windshield are caused by external factors during customer use, such as flying debris (small stones).
Flaws, scratches and cracks on the windshield are normally not covered under warranty. However, careful investigation is required for correct root cause
analysis of windshield damage. This service information describes the distinguishing features of windshield flaws, scratches and cracks to support your
diagnosis and judgment in determining whether the damage was caused by the customer or not.
MECHANISM OF FLAWS/SCRATCHES/CRACKS OCCURRENCE:
All vehicle windshields are exposed to flying debris. During three years of normal vehicle use, about 10,000 subtle flaws ranging in size from 0.1 mm ~
1.0 mm appear on the windshield. However, as for the occurrence of visible flaws, scratches and cracks, some occur immediately after a subtle flaw
appears and some occur after additional mileage is put on the vehicle.
If the impact of flying debris isn't big enough, the windshield glass may show subtle flaws without having a visible scratch and/or crack at that time. After
that, the stress applied to the glass while the vehicle is driven (wind pressure, vibration, body distortion, temperature change etc.) can make subtle flaws
grow and cause visible flaws, scratches and cracks. These may appear as if they had occurred suddenly.
HOW TO TAKE CARE OF FLAWS/SCRATCHES/CRACKS:
After understanding the mechanism of flaws, scratches and cracks, we need to take care of them by performing an appropriate inspection and diagnosis
of the occurrence situation. The following procedure is for your reference.
^ Interview the customer to understand the situation in which they recognized the flaws, scratches or cracks and whether they experienced flying debris
hitting the windshield or not.
^ By using a fingernail, needle or pencil, trace the crack and verify the possible starting point.
^ Carefully check underneath the windshield moulding as necessary, since the starting point can be found there.
^ Observe the flaws, scratches and cracks with a magnifying glass.
^ Review the results of the customer interview and observation with the "Causes" and "Features" below to identify the root cause.
^ Explain the root cause of occurrence to the customer with digital photos taken during observation.
^ If it is difficult to verify the starting point of a crack, check for damage on the paint surfaces such as the bumper, hood, etc.
CAUSES AND FEATURES OF FLAWS/SCRATCHES/CRACKS:
Crack Due To Flying Debris:
