# 2015 Audi A3 - Acting oddly

**URL:** <https://community.cartalk.com/t/2015-audi-a3-acting-oddly/157109>\
**Category:** Maintenance/Repairs\
**Tags:** audi\
**Created:** [January 23, 2020, 1:32pm UTC](https://community.cartalk.com/t/2015-audi-a3-acting-oddly/157109 "2020-01-23T13:32:58Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![PierretteTeolis](https://avatars.discourse-cdn.com/v4/letter/p/3ec8ea/32.png) [@PierretteTeolis](https://community.cartalk.com/u/PierretteTeolis)\
**Post date:** [January 23, 2020, 1:32pm UTC](https://community.cartalk.com/t/2015-audi-a3-acting-oddly/157109/1 "2020-01-23T13:32:58Z")

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When turning off car with key, blinking lights and panic sound and moonroof tilts. Key battery is new.

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**Author:** ![texases](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/texases/32/862_2.png) [@texases](https://community.cartalk.com/u/texases)\
**Post date:** [January 23, 2020, 10:10pm UTC](https://community.cartalk.com/t/2015-audi-a3-acting-oddly/157109/2 "2020-01-23T22:10:55Z")

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Have you checked with a different key?

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**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\
**Post date:** [January 24, 2020, 3:21am UTC](https://community.cartalk.com/t/2015-audi-a3-acting-oddly/157109/3 "2020-01-24T03:21:46Z")

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The BCM controls those functions.

> **[5 Common Symptoms of a Failing Body Control Module (BCM) - Module Experts](https://moduleexperts.com/5-common-symptoms-failing-body-control-module-bcm/)**
>
> If your BCM malfunctions, you will notice a negative effect on the operation of your vehicle. Watch out for these symptoms.

Tester