What is the Intermittent Wiper Relay?
Whether you're driving in a torrential downpour or simply need to clear those bugs off the windshield, having the ability to slow down or speed up your windshield wipers comes in quite handy. This operation is completed thanks to the intermittent wiper relay; an electrical switch that sends a predetermined setting to the wiper module to power the wiper motor. When all of the components involved in the windshield wiper blades work correctly, the system is very convenient. However, when one part malfunctions, it can cause potential safety concerns. One of the most common parts to fail is the intermittent wiper relay switch.
When the intermittent wiper relay begins to fail or is wearing out, it will display a few warning signs to the driver. In order to reduce the potential of damage to other mechanical components, it's important to be alert to these symptoms and take proactive measures to replace the intermittent wiper if needed. Listed below are a few common signs of a windshield wiper relay problem.
1. Windshield Wipers Stuck on One Speed
One of the quickest indicators that a problem exists with the intermittent wiper relay is when the wipers are not intermittent and only work at one speed. If you had your windshield wipers on the slow speed the last time they were active, and you turn them on again under a different setting, the relay switch should send that updated information to the module. If you make a change in the settings and the wipers don't react, it's most likely due to a malfunction in the intermittent wiper relay.
2. Malfunctioning Windshield Wiper Blades
Since the intermittent wiper relay is responsible for sending signals to the module, it's also possible that it could send an incorrect signal when it is malfunctioning. Most of the time, this signal will be to the motor to cease operation of the wiper blades. This is very rare, but is often attributed to a problem in the intermittent wiper switch or controls.
3. Wipers Operate at Incorrect Speeds
Similar to the issue above, if you notice that your wiper blades are operating at a different speed or intermittent setting than you selected, it's a good indication that the intermittent wiper relay is damaged and needs to be replaced. This is also a symptom that you don't want to avoid as it may cause the wiper blade motor to overheat and break prematurely.
4. Wipers Making Humming Noise
In some instances, you may notice that there is a strange humming noise when trying to operate the wipers on the car. This is usually caused by the wiper motor not getting the power that it needs due to a bad relay. In most cases, a professional mechanic will replace the intermittent wiper relay and the controls at the same time to ensure all of the supporting connections work smoothly together.
Is it Safe to Drive with a Bad Intermittent Wiper Relay?
When the intermittent wiper relay malfunctions, it affects the intermittent wiper function, which is crucial for maintaining visibility during rainy or snowy conditions. Without proper intermittent operation, the wipers may not clear the windshield effectively, leading to obscured vision and increased risk of accidents, especially in inclement weather. Therefore, it's essential to address any issues with the intermittent wiper relay promptly to ensure optimal visibility and safe driving conditions.
Having a fully functional intermittent wiper relay is more than a convenience. For many of us that are subject to driving in evolving and changing weather conditions; it's imperative for safe visibility. If you notice any of the above warning signs, make sure to contact YourMechanic for a quote and a mobile mechanic will come to you to inspect and replace your wiper relay.
