Mazda CX-5: How to turn on the rear window defogger
Do not scrape the inside heating grid or use abrasive cleaners.
Switch ignition ON and press the rear-defogger switch. Its indicator illuminates while the rear glass heats; standard operation ends after about 15 minutes.
Step by step
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Common questions
Is the rear defogger a snow-melting system?+
No. Mazda describes it as a fog-clearing system and says to remove accumulated snow first.
SOURCES & SCOPE
Where this guide comes from
Written from the official references below, reviewed on 25 October 2026. This is a source-based guide, not a claim of hands-on vehicle testing.
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