# Theft system light turns on a few seconds after I turn off my car

**URL:** <https://community.cartalk.com/t/theft-system-light-turns-on-a-few-seconds-after-i-turn-off-my-car/138525>\
**Category:** Maintenance/Repairs\
**Created:** [April 15, 2019, 1:01am UTC](https://community.cartalk.com/t/theft-system-light-turns-on-a-few-seconds-after-i-turn-off-my-car/138525 "2019-04-15T01:01:11Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Magica28](https://avatars.discourse-cdn.com/v4/letter/m/c77e96/32.png) [@Magica28](https://community.cartalk.com/u/Magica28)\
**Post date:** [April 15, 2019, 1:01am UTC](https://community.cartalk.com/t/theft-system-light-turns-on-a-few-seconds-after-i-turn-off-my-car/138525/1 "2019-04-15T01:01:11Z")

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2005 Chevy Classic. Sorry for posting twice but evidently I’m just full of car issues today.

First issue, my radio/clock wouldn’t shut off. So I pulled the fuse.

Now when I shut car off, my theft system light lights up after about 10 seconds. When i turn my key to ON, it shuts off after another 10 seconds. Back to off, it’s on a again. I can still start my engine. What the hell is going on?

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**Author:** ![COROLLAGUY1](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/corollaguy1/32/7575_2.png) [@COROLLAGUY1](https://community.cartalk.com/u/COROLLAGUY1)\
**Post date:** [April 15, 2019, 12:54pm UTC](https://community.cartalk.com/t/theft-system-light-turns-on-a-few-seconds-after-i-turn-off-my-car/138525/2 "2019-04-15T12:54:14Z")

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The anti theft security light should turn on(blink) only after you exit the car and lock all doors. I doubt the radio fuse has something to do with it.

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**Author:** ![shanonia](https://avatars.discourse-cdn.com/v4/letter/s/9de053/32.png) [@shanonia](https://community.cartalk.com/u/shanonia)\
**Post date:** [April 15, 2019, 3:21pm UTC](https://community.cartalk.com/t/theft-system-light-turns-on-a-few-seconds-after-i-turn-off-my-car/138525/3 "2019-04-15T15:21:32Z")

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Now that there’s no power to the radio, is the antitheft system sensing that as a theft?
