Test Garage Door Safety
Why It Matters
A garage door that does not auto-reverse is a serious safety hazard, especially for children and pets.
Quick Guide
- 1
Gather your tools and materials
You'll need: 2x4 wood block or similar object. Materials required: necessary materials.
- 2
Perform the test garage door safety
Test the auto-reverse feature by placing an object under the closing door. Safety note: Keep hands and body clear during testing.
- 3
Verify and clean up
Check that the work was completed correctly and clean up your workspace. If if door does not reverse on contact, consider calling a professional.
Tools & Materials
Tools
- 2x4 wood block or similar object
Community Tips
Place a 2x4 wood block flat on the garage floor directly under the door, then close it fully—if the door reverses immediately upon contact, the safety sensors are functioning correctly and meet federal requirements. If the door fails to reverse, the infrared sensors need realignment or replacement before continued use, as this is a critical anti-entrapment safety feature.
Never attempt to manually force a garage door open or closed if the automatic opener is malfunctioning, as the counterbalance spring system can store hundreds of pounds of tension and cause severe injury. Only trained technicians should service spring mechanisms; homeowners should contact a professional like Chamberlain or LiftMaster service centers ($150-300 for diagnostic visits) for repairs.
A basic dual-purpose laser level such as the DeWalt DW088K ($60-90) quickly identifies misalignment in the garage door track by projecting a straight line along both sides—crooked tracks are a leading cause of sensor malfunction and premature wear. This tool catches mounting drift that visual inspection alone often misses. ---