The lines that appear on the rear windshield are indeed defogger lines, or defroster lines, installed in cars. There is a switch located on the front control panel of the car that operates both the front windshield wipers and the rear windshield wiper. When you press the defogger switch, electrical current flows through the red copper wires on the windshield, generating heat that helps clear fog from the glass. This feature is highly beneficial during rainy or humid weather conditions.
However, it’s crucial to remember to press the switch to turn off the defogger immediately after use. Leaving it on for extended periods can cause the glass to overheat, potentially leading to damage. If the defogger lines on the windshield crack, the only solution is to replace them.
Source: eTOYOTACLUB
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