What Causes the Rearview Mirror Heating Light Not to Illuminate?
1 Answers
The reasons for the rearview mirror heating light not illuminating include circuit breakage, faulty flasher relay, excessive contact gap, and other factors. Circuit Inspection: Check if the power line terminal of the flasher relay has electricity. If there is no electricity, inspect whether the line to the power source is broken. If there is electricity, use a screwdriver to connect the two terminals of the flasher relay. If the turn signal lights up, it indicates a faulty flasher relay, which should be replaced promptly. If it does not light up, inspect the flasher relay. Contact Inspection: If the turn signal does not illuminate when pressing the movable contact and the contact is closed, use a screwdriver to short-circuit the contact. If the light then illuminates, it indicates oxidized contacts. If the turn signal still does not light up, the issue may be with the turn signal switch. Use a screwdriver to separately connect the power line of the turn signal switch to the left and right light line terminals. If the light illuminates, it indicates a faulty turn signal switch, which should be removed for repair or replacement.