Liftmaster 3245 Opener Manual
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Liftmaster 3245 and 3255 Opener Manual, Remotes and Parts


The Liftmaster 3245 and 3255 Security + garage door openers are popular Liftmaster models that were sold around 2007. The 3245 model has a 1/3 hp motor while the 3255 model has a 1/2 hp motor. Both are chain drive units and work on the Security + 315MHz radio frequency. Other than the horsepower of the motors the parts for both models are the same including the remotes and keypad. Below you will find the operator manual which can be downloaded. We also briefly cover how to program your remote to the operator, a few common issues and solutions, and the most common replacement remotes & parts.

Liftmaster 3255 Manual and Liftmaster 3245 Manual

The Liftmaster 3255 manual and the Liftmaster 3245 manual are your go-to resources for any information you need about your garage door opener. The manual has installation instructions, instructions on adjusting the operator, troubleshooting issues, instructions for programming the compatible 371LM remote and 373LM remote and replacement parts diagrams.

Programming Liftmaster 3255 or 3245 Opener Remote

Liftmaster Purple Learn Button
  1. Find the ‘Learn’ button on your opener. The Learn Button should be purple.
  2. Press and release this button.
  3. Press the button on your remote that you wish to program to the operator.
  4. Wait for the opener lights to blink or a click sound.

Commonly Asked Questions and Solutions

Q: What if my remote won’t program? 

A: Ensure your opener is plugged in and the electrical circuit is live. Check for any interference from nearby LED lights, which can sometimes affect the signal. Reset the opener and try programming again. If the light bulb is causing interference then you may want to consider using an LED or rough service bulb that is made for garage door openers. Read more about them here.

Q: The ‘Learn’ button doesn’t seem to work. What should I do? 

A: Unplug the opener for a few minutes, then plug it back in. If the ‘Learn’ button still isn’t working, it may be a circuit board issue. Refer to your manual for warranty information or contact a professional.

Q: My remote has a very short range. How can I fix this? 

A: First, replace the battery in the remote. If the range doesn’t improve, remove any potential signal obstructions or interference sources. If the issue persists, the remote may need to be replaced. The bulb in your operator may be causing interference. Read more about the bulbs that we recommend here.

Q: How do I erase all remote controls from my opener? 

A: Press and hold the ‘Learn’ button until the LED goes out (about 6 seconds). This will clear all programmed remotes. You will need to reprogram the remotes and keypad (if you have one) that you wish to use.

Q: My door won’t close and the lights are flashing. What’s wrong? 

A: This usually indicates an issue with the safety sensors. Ensure they are aligned correctly, the lenses are clean, and there are no obstructions. There also could be other issues causing the problem. Refer to the troubleshooting guide in the back of the opener manual.

Replacement Parts and Remotes

When you need Liftmaster 3255 parts or a remote for your Liftmaster model 3245 garage door opener then it’s important to find compatible items. Some of the more common remotes include the 373LM 1-Button Remote, 373LM 3-Button Remote and 377LM Wireless Keyless Entry. As of this writing the remotes are still available but the keypad has been discontinued. If you’re looking for a keypad then use the replacement 878MAX Wireless Keyless Entry. The 41C4220A Gear Assembly and 041-0136 Safety Sensors are two of the most common replacement parts.





893MAX Liftmaster Remote

  • 3-Button Remote

890MAX Liftmaster Remote

  • 3-Button Keychain Remote

878MAX Liftmaster Keyless Entry

  • Wireless Keyless Entry





41C4220A Gear Assembly

  • Replacement Gear Assembly

371LM Liftmaster Remote

  • 1-Button Remote

373LM Liftmaster Remote

  • 3-Button Remote

041-0136 Liftmaster Safety Sensors

  • Replacement Safety Sensors


The Liftmaster 3245 and 3255 garage door openers are designed for performance and safety. With the help of the detailed manual, programming your remote and replacing parts can be done with ease. Keep this guide handy for a quick reference to ensure your garage door opener continues to function efficiently.

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