1. Introduction
The LiftMaster 371LM is a versatile 1-button remote control designed for use with compatible garage door openers and gate operators. This remote features advanced Security+ rolling code technology, which generates a new code with every use, enhancing the security of your access system. It can operate a single garage door or gate, and can also be programmed to control garage door opener lights or other small appliances equipped with a compatible receiver.
Front view of the LiftMaster 371LM 1-Button Remote Control, showcasing its sleek black design and single large button.
Image highlighting the LiftMaster Security+ feature, indicating that the remote sends a new code with every click for enhanced security.
Visual representation of the LiftMaster 371LM remote control, accompanied by text listing its ideal uses: accessing garage doors, safeguarding households, and letting children in after school.
2. Setup and Programming
Before programming, ensure the remote has a working CR2 battery installed. The LiftMaster 371LM remote control is compatible with garage door openers featuring a purple learn button. Always refer to your garage door opener's manual for specific programming instructions, as steps may vary slightly by model.
2.1. Programming Steps
- Locate the Learn Button: On your garage door opener motor unit, locate the 'Learn' button. This button is typically purple for compatible models.
- Activate Learn Mode: Press and immediately release the 'Learn' button on the motor unit. The LED indicator light next to the button will illuminate steadily for 30 seconds.
- Press Remote Button: Within 30 seconds of activating the learn mode, press and hold the button on your 371LM remote control that you wish to program.
- Confirm Programming: Release the remote button when the garage door opener lights flash or you hear two clicks. This indicates successful programming.
- Test the Remote: Press the programmed button on your remote control to ensure it operates the garage door or gate correctly.
The LiftMaster 371LM remote control shown alongside its included visor clip, designed for convenient attachment in a vehicle.
3. Operating the Remote Control
Once programmed, operating your LiftMaster 371LM remote control is straightforward.
3.1. Opening/Closing a Garage Door or Gate
- Ensure you have a clear line of sight to the garage door or gate.
- Press and release the programmed button on your remote control. The garage door or gate will begin to move.
- To stop the door or gate mid-movement, press the button again.
- To reverse the direction, press the button a third time.
3.2. Controlling Lights or Small Appliances
If your garage door opener system includes a compatible light control or accessory receiver, you can program the 371LM remote to operate these as well. Follow the specific programming instructions for your accessory to link it with the remote.
4. Maintenance
The LiftMaster 371LM remote control requires minimal maintenance, primarily focusing on battery replacement.
4.1. Battery Replacement
The remote control uses one CR2 lithium battery. When the remote's range decreases or the indicator light fails to illuminate upon button press, it's time to replace the battery.
- Open the Remote Casing: Use a small coin or screwdriver to gently pry open the remote control casing. There is usually a small notch on the side or bottom for this purpose.
- Remove Old Battery: Carefully remove the old CR2 battery.
- Insert New Battery: Insert a new CR2 lithium battery, ensuring the positive (+) terminal is facing up, as indicated inside the battery compartment.
- Close Casing: Snap the remote control casing back together securely.
- Test Functionality: Test the remote control to ensure it operates correctly after battery replacement.
5. Troubleshooting
If your LiftMaster 371LM remote control is not functioning as expected, consider the following common issues and solutions:
- Remote Not Working After Programming:
- Ensure your garage door opener has a purple learn button. This remote is specifically designed for this compatibility.
- Verify that the 'Learn' button on the motor unit was pressed and released, and the remote button was pressed within the 30-second window.
- Check the battery in the remote control. Replace if necessary.
- Try reprogramming the remote following the steps in Section 2.1.
- Limited Operating Range:
- A weak battery is the most common cause of reduced range. Replace the CR2 battery.
- Ensure there are no obstructions between the remote and the garage door opener's antenna.
- Reposition the remote control in your vehicle. Sometimes, certain mounting positions can interfere with the signal.
- Check if there are any sources of radio frequency interference nearby.
- Remote Indicator Light Does Not Flash:
- The battery may be dead or incorrectly installed. Replace the CR2 battery and ensure correct polarity.
6. Specifications
| Model Number | 371LM |
| Manufacturer | Chamberlain (LiftMaster) |
| Part Number | 371LM |
| Item Weight | 2.08 ounces |
| Product Dimensions | 4 x 4 x 1 inches |
| Batteries Required | 1 CR2 Lithium battery (not included) |
| Special Features | Ergonomic design, Security+ rolling code technology |
7. Safety Information
Always prioritize safety when operating garage door openers and remote controls. Failure to follow these instructions may result in serious injury or property damage.
- Keep Remotes Away from Children: Store remote controls out of reach of children to prevent accidental operation of the garage door or gate.
- Observe the Door/Gate: Always keep the garage door or gate in sight when operating it with the remote control. Do not allow anyone to cross the path of a moving door or gate.
- Test Safety Reversal System: Regularly test your garage door opener's safety reversal system as described in your opener's manual.
- Battery Safety: Dispose of old batteries properly. Do not incinerate or mutilate batteries. Keep new and used batteries away from children.
- Professional Service: If your garage door or opener is not functioning correctly, contact a qualified service technician.
