Automatic gate maintenance checklist
Once a month, walk the gate path, test that the gate stops and reverses, and move it by hand with the power off to feel for binding. Every 3 months, lubricate moving parts. Replace batteries every 2 to 3 years, and book an annual inspection. Sources: Mighty Mule gate opener maintenance guide, LiftMaster RSL12V manual, Fixr.
Monthly
- Walk the gate path; clear debris and trim plants.
- Test the obstruction and entrapment protection: the gate should stop and reverse.
- With the power off and the opener disconnected, move the gate by hand to feel for binding.
- Check bolts and hardware.
- Check the warning signs on both sides are in place (Mighty Mule gate opener maintenance guide).
Every 3 months
- Lubricate the gate and moving parts with silicone spray.
- Grease ball bearing hinges. In coastal salt air, do it every 2 months (Mighty Mule gate opener maintenance guide).
- Fixr suggests every six months, or every three with heavy use (Fixr).
Battery and solar
- Replace the battery every 2 to 3 years, or sooner if it leaks or corrodes (Mighty Mule gate opener maintenance guide). LiftMaster says every 3 years; batteries degrade with temperature and use (LiftMaster RSL12V manual).
- Clean the solar panel with mild soap and water, and keep water off the wiring (Mighty Mule gate opener maintenance guide).
Every year
- Book an inspection. Fixr puts it at about one hour at $30 to $80 an hour (Fixr).
- DASMA suggests following the maker's schedule and considering a service agreement with a qualified installer (DASMA gate systems safety brochure (Nov 24).
Do not open the control box or change force and limit settings. Those are technician jobs.
Quick answers
How often should an automatic gate be serviced?
Owner checks monthly and every 3 months (Mighty Mule), and an annual inspection (Fixr).
What should I lubricate on my gate?
Mighty Mule suggests silicone spray on the gate and moving parts every 3 months, and greasing ball bearing hinges.
How often should I replace my gate opener battery?
Every 2 to 3 years (Mighty Mule), or every 3 years (LiftMaster).
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Related guides
Gate Repair USA is not a gate company. These guides are general information from the sources listed below. Stop at the safe checks: anything inside the control box, wiring, force or limit settings is a job for a gate technician. Costs are national ranges, not quotes.
Sources for this page
Last checked: November 2, 2026.