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August•August Lock

Analysis by Lukas & Team

August Lock Grinding Motor Noise Troubleshooting

Troubleshoot grinding noises in your August smart lock. Diagnose motor problems, battery issues, and mechanical binding in Canadian climates.

Frequently Asked Questions

•Is the grinding noise constant, or only during locking/unlocking?

Constant noise suggests a continuously failing motor. Noise only during operation points to mechanical obstruction.

•What type of batteries are you using, and how old are they?

Old or low-quality batteries are a common cause of motor issues, especially in cold weather.

•Has the door frame shifted or warped recently due to weather changes?

Door frame misalignment is a major factor in cold Canadian winters.

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About Lukas & Team

Lukas leads the technical research department at Digital Home Faults. Together with a team of systems analysts, he specializes in translating complex manufacturer error codes into actionable diagnostic steps for the Canadian market.

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How It Works:

The August Lock employs a DC motor to actuate a bolt mechanism. Motor control is governed by an internal microcontroller responding to Zigbee/Wi-Fi commands. Power is supplied by four AA batteries (6V nominal). High impedance or voltage drop under load can cause motor malfunction. Mechanical resistance in the bolt mechanism increases motor current draw. Door frame misalignment due to temperature fluctuations in Canada impacts mechanical components.

Technical Recommendation:

Try a complete power cycle: Remove the batteries for 15 minutes, then reinsert them. This can sometimes reset the motor controller and resolve minor glitches.

Observed Symptoms:

Audible grinding noise emanating from the August Lock motor assembly during operation (locking/unlocking). May be accompanied by stuttered movement or failure to fully extend/retract the bolt. Observe LED error codes (flashing red = low battery; alternating red/green = motor fault). Check the August app for error logs indicating motor overload or obstruction.

Step-by-Step Fix:

1

Replace batteries with fresh, high-quality alkaline AA batteries or lithium AA batteries (if supported by the model). Verify voltage under load (should not drop below 5.5V). Consider using a battery tester.
2

Inspect the door frame and strike plate for any signs of misalignment or obstruction. Adjust strike plate position if necessary. Use a file to smooth rough edges.
3

Lubricate the bolt and strike plate with a dry silicone lubricant (avoid oil-based lubricants, which can attract dust).
4

Disassemble the lock (following manufacturer's instructions) and inspect the gears for damage or wear. Replace gears if necessary (availability may be limited).
5

Check the motor connections and wiring for any signs of damage or corrosion. Clean contacts with electrical contact cleaner.
6

If the problem persists, contact August support or a qualified locksmith for further assistance. Provide the model number and a detailed description of the symptoms.
7

Check for firmware updates via the August app. Ensure the lock is within Wi-Fi range during the update process.

Common Causes:

Low battery voltage, particularly exacerbated by cold temperatures (-20°C to -40°C) increasing battery impedance.
Mechanical binding or obstruction within the bolt mechanism due to door frame warping from seasonal temperature changes.
Stripped or damaged gears within the motor assembly.
Foreign object lodged within the lock mechanism.
Insufficient lubrication of the bolt and strike plate.
Motor driver circuit failure on the internal PCB.

Maintenance Tips:

Replace batteries annually, especially before the onset of winter. Monitor battery health via the August app.
Regularly lubricate the bolt and strike plate (every 6 months).
Inspect the door frame and strike plate for misalignment or damage and address any issues promptly.
Ensure the lock firmware is up-to-date. Enable automatic firmware updates in the August app.
Consider a smart lock with a mechanical key override for emergency access during power outages or lock malfunctions.