Repair cost
$350–$1,500
DIY difficulty
2 / 5
Severity
Major
Costly to ignore — plan a fix within weeks
Affected
2019-2024
Windshield
What goes wrong
Heated wiper deicer area triggers stress cracks at low ambient temps.
Symptoms to watch for
- Crack from defroster grid
- Crack appears overnight
- No impact mark
Root cause
Glass thickness + heater grid stress concentration.
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Buy time with these
- • Avoid sudden defrost on full cold
Permanent fix
- Replace windshield with revised P/N; recalibrate EyeSight.
FAQ
What causes forester spontaneous windshield cracks?
Glass thickness + heater grid stress concentration.
How much does it cost to fix?
National average $350–$1,500.
Is this a DIY repair?
Difficulty 2/5. Replace windshield with revised P/N; recalibrate EyeSight.
What are the symptoms?
Crack from defroster grid; Crack appears overnight; No impact mark
Sources
- • NHTSA
- • Subaru Owner Forums