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I disconnected my battery to change my spark plugs today. With everything reconnected, the engine runs fine. Afterwards, the car produces a clicking noise at about 1 Hz for periods of several seconds. The clicking noise is coordinated with the radio backlight flashing and the turn signals blinking too. I'm worried this will drain the battery.

What did I mess up?

I tried manipulating all driver-side controls and buttons but didn't find anything that would stop the ticking.

Here's a video, if it helps: https://www.youtube.com/watch?v=LLxIgL4OBXQ

Thanks!

1998 Subaru Outback (2.5L).

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Seems to be the "security system:" https://www.cargurus.com/Cars/Discussion-t17156_ds520375

Turning the key to the ON position in the ignition before reconnecting the ground solved it.

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I'm not familiar with Subaru. But it sounds like you got a bad ground wire. Since you disconnected the battery I would look in that area. Look for any wires that are grounded to the fender, broken wires. Or just plain loose wire. Hope this helps

  • Ground wire seems fine. Engine starts, lights work, etc. – Conrad Meyer Jun 28 '17 at 2:51

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