# 2004 Honda Accord Sdn - Security question

**URL:** <https://community.cartalk.com/t/2004-honda-accord-sdn-security-question/134611>\
**Category:** Maintenance/Repairs\
**Tags:** honda\
**Created:** [February 14, 2019, 3:12pm UTC](https://community.cartalk.com/t/2004-honda-accord-sdn-security-question/134611 "2019-02-14T15:12:27Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![johnnygonzales](https://avatars.discourse-cdn.com/v4/letter/j/a87d85/32.png) [@johnnygonzales](https://community.cartalk.com/u/johnnygonzales)\
**Post date:** [February 14, 2019, 3:12pm UTC](https://community.cartalk.com/t/2004-honda-accord-sdn-security-question/134611/1 "2019-02-14T15:12:28Z")

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how can I reset the security alarm system on a 2004 honda accord after changing the door lock cylinder?

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**Author:** ![Whitey](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/whitey/32/24680_2.png) [@Whitey](https://community.cartalk.com/u/Whitey)\
**Post date:** [February 15, 2019, 7:09pm UTC](https://community.cartalk.com/t/2004-honda-accord-sdn-security-question/134611/2 "2019-02-15T19:09:59Z")

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I don’t think anyone here knows. Is it an OEM security system or an aftermarket system? Have you checked your owner’s manual or tried asking someone at a Honda dealership?