Disabling auto start/stop on your Focus or Focus RS couldn't be easier. This intelligent device restores your preference for auto start-stop automatically which eliminates the need to press the button after each ignition cycle.
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The diagnostic port type simply plugs into the On-Board Diagnostics (OBD) port under the dash in the driver's side footwell. While plugged in, the device will work to ensure when you turn auto start/stop off, it stays off.
The device has an LED light to indicate when it's awake and working. Some may prefer the LED to remain OFF so this preference is configurable. To turn the LED light OFF, press and hold the auto start/stop button on the vehicle until the LED light on the device blinks (~5 seconds). Repeat the procedure to turn the LED back ON. After completing this procedure, be sure to check the state of auto start/stop using the OFF indicator on the auto start/stop switch. Assuming your preference is OFF, you may need to press the auto start/stop button breifly once more.
The device can be plugged or unplugged at any time. However, since it does not make any changes to the vehicle, the device must stay plugged in for your auto start/stop preference to be automatically restored.