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How Do I Know If My Garage Door Sensors Are Misaligned in Sunnyvale, CA?

If you’re a Sunnyvale, CA, resident facing issues with your garage door, you’re not alone. One common problem that often requires garage door repair in Sunnyvale, CA, is misaligned garage door sensors. Understanding the signs of misalignment and knowing how to address them can save you both time and frustration. In this blog, we’ll explore how to identify misaligned garage door sensors.

Identifying Misaligned Garage Door Sensors

Garage Door Reverses Suddenly: If your garage door starts to close and then reverses unexpectedly, it’s a classic sign of sensor misalignment. These sensors are designed to prevent the door from closing if there’s an object in its path. Misalignment can cause the sensors to falsely detect an obstruction.

Garage Door Won’t Close: Another clear indicator is when your garage door refuses to close at all. This can be particularly troublesome, especially considering Sunnyvale’s varied weather conditions.

Flashing Lights on the Sensors: Most garage door sensors have lights that indicate their status. A solid light typically means they are aligned, whereas a blinking light can signify misalignment.

Physical Evidence of Misalignment: Sometimes, a visual inspection can reveal if the sensors are out of alignment. Check if the sensors on both sides of the door are at the same height and angle.

Causes of Sensor Misalignment

Sensor misalignment in garage doors can result from several factors:

Physical Disturbance

It’s common for the garage door sensors to get misaligned due to accidental bumps or disturbances. For instance, in a bustling household or during gardening activities, tools like lawnmowers, rakes, or even kids playing around can unintentionally knock into these sensors. 

Additionally, if you’re maneuvering your vehicle in and out of the garage, a slight misjudgment can lead to a direct hit on the sensors, displacing them. Even small impacts can cause significant misalignments, disrupting the functionality of your garage door.


Over time, the regular operation of your garage door can contribute to sensor misalignment. The opening and closing mechanism involves a fair amount of movement and vibration. This is especially true in older garage doors or those that haven’t been serviced in a while. These vibrations can gradually loosen the brackets holding the sensors in place, causing them to shift. 

In Sunnyvale, where many residents use their garage doors frequently, this is a common issue that homeowners face.

Environmental Factors

Sunnyvale’s climate, characterized by its Mediterranean-like conditions with warm, dry summers and mild, wet winters, can play a role in the misalignment of garage door sensors. These environmental conditions can cause expansion and contraction in the materials used in your garage and its door mechanism.

For example, the brackets holding the sensors can expand in the heat and contract in the cooler weather, leading to a slow but steady drift from their original positions.

Additionally, moisture levels during the winter can also affect the sensors and the door’s moving parts, potentially leading to misalignment issues.

Steps to Realign Your Garage Door Sensors

Steps to Realign Your Garage Door Sensors
  1. Safety First: Before attempting any adjustments, ensure your garage door is in the manual mode to prevent any accidental operation.
  1. Loosen the Screws: The sensors are typically mounted on brackets. Loosen the screws slightly – this will allow you to adjust the sensors but still hold them in place.
  1. Align the Sensors: Adjust the sensors so they are facing each other directly. You can use a level to ensure they are at the same height.
  1. Test the Alignment: Once aligned, tighten the screws and test the door. If it closes smoothly without reversing, your sensors are likely aligned correctly.
  1. Seek Professional Help if Needed: If you’re unable to align the sensors, or if the problem persists, it may be time to call in professionals.

When to Call a Professional

While DIY fixes can be tempting, there are times when professional help is necessary:

  • Complex Mechanical Issues: If sensor misalignment is a symptom of a larger problem with your garage door mechanism, professional expertise is needed.
  • Safety Concerns: Garage doors can be dangerous if not handled properly. If you’re unsure or uncomfortable performing the alignment, it’s safer to call a professional.
  • Persistent Problems: If the issue continues despite your efforts, it might indicate a deeper problem that requires professional diagnostics and repair.

Choosing GoPro Garage Doors for Your Garage Door Repair in Sunnyvale, CA

If you’re in Sunnyvale, CA, and facing persistent garage door sensor issues, consider reaching out to GoPro Garage Doors. So, why should you choose GoPro for your garage door repair in Sunnyvale, CA?

Expertise: Our team of professionals has extensive experience in dealing with all types of garage door issues, including sensor misalignment.

Customer-Centric Approach: At GoPro Garage Doors, we understand the inconvenience of garage door problems and strive to provide efficient, customer-focused solutions.


Dealing with misaligned garage door sensors can be a hassle, but understanding how to identify and address the issue is the first step towards a solution. Remember, while DIY methods can be effective, seeking professional help from experts like GoPro Garage Doors in Sunnyvale, CA, is often the best way to ensure your garage door functions safely and efficiently.

For garage door maintenance, installation, replacement, and garage door repair services, trust GoPro Garage Doors for reliable, expert service right in the heart of Sunnyvale and all across Northern California. Give us a call today!