How to disable garage door sensors liftmaster?

How to disable garage door sensors liftmaster?


If you’re looking to disable the garage door sensors on your Liftmaster opener, you may have various reasons for doing so. Whether you need to perform maintenance or repairs on your garage door, or you simply want to bypass the sensors temporarily, this article will guide you through the process. It’s important to note that tampering with garage door sensors can compromise safety features, so exercise caution and use this information responsibly.

Understanding Garage Door Sensors

Before we delve into disabling the garage door sensors, it’s essential to understand their purpose and how they work. Garage door sensors are safety devices designed to prevent accidents and injuries. They typically consist of two components: a sender and a receiver. The sender emits an invisible beam of light, while the receiver detects this beam. When an obstruction breaks the beam, the sensors signal the garage door opener to stop closing or reverse its direction.

Reasons for Disabling Garage Door Sensors

There are several reasons why you might want to disable your Liftmaster garage door sensors temporarily. Some common scenarios include:

1. Maintenance and Repairs: When performing maintenance or repairs on your garage door, disabling the sensors can prevent them from interfering with your work.

2. Testing and Troubleshooting: If you suspect an issue with the sensors themselves, disabling them temporarily can help you isolate the problem and determine if they need replacement or adjustment.

3. Power Outages: In the event of a power outage, the sensors may prevent you from manually opening or closing the garage door. Disabling them can provide a temporary solution until power is restored.

Disabling Liftmaster Garage Door Sensors

To disable the garage door sensors on a Liftmaster opener, follow these steps:

1. Locate the Sensors: The sensors are typically mounted on the vertical tracks, near the bottom of the garage door. Look for small boxes with wires attached to them.

2. Disconnect the Power: Before working on the sensors, ensure the power to the garage door opener is disconnected. This can be done by unplugging it from the power outlet or turning off the circuit breaker that supplies electricity to the opener.

3. Remove the Sensors: Carefully detach the sensors from their mounting brackets. They are usually held in place by a couple of screws. Once removed, disconnect the wires from the opener unit.

4. Disable the Opener’s Safety Feature: To prevent the opener from detecting the absence of sensors and disabling its functionality, you may need to disable the safety feature. Consult your Liftmaster opener’s manual or contact Liftmaster customer support for guidance on how to do this properly.


Disabling the garage door sensors on a Liftmaster opener can be done by following the steps outlined above. However, it’s important to remember that tampering with safety features can compromise the safe operation of your garage door. Only disable the sensors when necessary and take appropriate precautions to ensure the safety of yourself and others.


– Liftmaster Official Website:
– Liftmaster Customer Support: