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Nest Learning Thermostat 2nd Generation Auto-Away Sensor Replacement

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When replacing the auto-away sensor, battery removal is necessary. The battery replacement guide should be a prerequisite before starting. The tools required are tweezers and a Phillips #0 screwdriver.

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  1. Nest Learning Thermostat 2nd Generation Auto-Away Sensor Replacement, Removal from Wall: crwdns2935265:01crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Nest Learning Thermostat 2nd Generation Auto-Away Sensor Replacement, Removal from Wall: crwdns2935265:01crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • Grasp the display's metal outer ring with your fingers and pull directly away from the wall.

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  2. Nest Learning Thermostat 2nd Generation Auto-Away Sensor Replacement, Open Display: crwdns2935265:02crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Turn the display over.

    • Remove the four 6 mm screws from the back of the display using a Phillips #0 screwdriver.

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  3. Nest Learning Thermostat 2nd Generation Auto-Away Sensor Replacement, Remove the back of the display: crwdns2935265:03crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Nest Learning Thermostat 2nd Generation Auto-Away Sensor Replacement, Remove the back of the display: crwdns2935265:03crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • Pinch the gray 20-pin connector with your fingers and pull directly away from the display.

    • Do NOT pull too far as there is a ribbon on the back panel connecting the 20-pin connector to the display.

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  4. Nest Learning Thermostat 2nd Generation Auto-Away Sensor Replacement, Disconnect the base connection ribbon cable.: crwdns2935265:04crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Nest Learning Thermostat 2nd Generation Auto-Away Sensor Replacement, Disconnect the base connection ribbon cable.: crwdns2935265:04crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Nest Learning Thermostat 2nd Generation Auto-Away Sensor Replacement, Disconnect the base connection ribbon cable.: crwdns2935265:04crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Locate the blue pull tab at the end of the ribbon which says, "1. Pull".

    • Grasp the tab with your fingers and pull directly away from the motherboard.

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  6. Nest Learning Thermostat 2nd Generation Auto-Away Sensor Replacement, Lift battery from the base: crwdns2935265:05crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Nest Learning Thermostat 2nd Generation Auto-Away Sensor Replacement, Lift battery from the base: crwdns2935265:05crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • Locate the blue tab which says, "2. Pull".

    • Use tweezers to pull the battery up and away from the display.

    • Do NOT pull too far, as the battery is still connected to the motherboard and must be unplugged.

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  7. Nest Learning Thermostat 2nd Generation Auto-Away Sensor Replacement, Disconnect the battery from the motherboard: crwdns2935265:06crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Nest Learning Thermostat 2nd Generation Auto-Away Sensor Replacement, Disconnect the battery from the motherboard: crwdns2935265:06crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • Locate the blue tab which says "3 unplug".

    • Grasp the battery with your fingers. Pull gently directly away from the display to unplug the battery from the motherboard.

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  8. Nest Learning Thermostat 2nd Generation Auto-Away Sensor Replacement, Remove battery from the display: crwdns2935265:07crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Nest Learning Thermostat 2nd Generation Auto-Away Sensor Replacement, Remove battery from the display: crwdns2935265:07crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Nest Learning Thermostat 2nd Generation Auto-Away Sensor Replacement, Remove battery from the display: crwdns2935265:07crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Grasp the battery with your fingers and pull directly away from motherboard to separate the battery from the display.

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  9. Nest Learning Thermostat 2nd Generation Auto-Away Sensor Replacement, Locate auto-away sensor: crwdns2935265:08crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Locate the auto-away sensor.

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  10. Nest Learning Thermostat 2nd Generation Auto-Away Sensor Replacement, Remove screws: crwdns2935265:09crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Nest Learning Thermostat 2nd Generation Auto-Away Sensor Replacement, Remove screws: crwdns2935265:09crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • Remove the four 3mm screws with a #0 Phillips screwdriver.

    • Remove the one 4mm screw located at the edge of the auto-away sensor. Use a #0 Phillips screwdriver.

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  11. Nest Learning Thermostat 2nd Generation Auto-Away Sensor Replacement, Remove auto-away sensor: crwdns2935265:010crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Nest Learning Thermostat 2nd Generation Auto-Away Sensor Replacement, Remove auto-away sensor: crwdns2935265:010crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Nest Learning Thermostat 2nd Generation Auto-Away Sensor Replacement, Remove auto-away sensor: crwdns2935265:010crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Lift the auto-away sensor from motherboard using tweezers.

    • Peel the copper foil gently from the EMI shield.

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To reassemble your device, follow these instructions in reverse order.

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