

I would first attempt to disconnect it see if the alarm still randomly goes off. When the hood latch is closed you should have an open circuit.When the hood is open you should have continuity.You can test whether the hood switch is working by using a continuity tester, measure across the connector (switch) and simulate opening and closing the hood latch with a screwdriver. If you’re mechanically inclined it’s not too difficult to replace these, if not have your Honda dealer take a look. If the switch that monitors whether the hood is open or shut isn’t working then this will impact the alarm. It’s not uncommon for the hood switch to develop a fault or get damaged from the bumps of driving, from slamming the hood or from exposure to weather.
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Give the hood latch a thorough clean and make sure it is completely free of dirt and debris.

Corrosion and rusting of the hood switch is also very common, which can also trigger the alarm. Dirty Hood Switchĭue to the prominent location of the hood switch, it is very prone to getting dusty, dirty and grimy – the accumulation of which is enough to cause alarm issues. It is designed to trigger an alarm if someone tries to force open the hood, however if it is broken or clogged with dirt this can trigger the alarm. Like most vehicles, the Accord equips a hood latch sensor which is essentially an electrical switch.

May not be a bad idea to pull the panels and look around for any signs.” 3. “In other threads, we have seen rodents chew up harnesses near the bottom of the engine bay. Rodents are known to nibble on electrical wires which are covered in soy-based insulation – this can lead to a wide range of problems, including triggering the alarm. Honda sells a chili pepper-infused anti-rodent tape and even fits some components pre-wrapped in tape. Rodents Chewed WiresĪ common cause of Honda Accord alarms going off is rodents chewing through electrical wires.Īlthough this may sound far-fetched it’s actually a very common problem – one that Honda is well aware of. If you’re not confident doing this, take your car to any AutoZone who often offers free battery health checks. Anything under 12V and the battery should be charged or replaced. The meter should display a reading, if the battery is fully charged the voltage should be between 12.2 and 12.6 volts.
