# AC, entertainment system, and headlights not working

**URL:** <https://community.cartalk.com/t/ac-entertainment-system-and-headlights-not-working/188153>\
**Category:** Maintenance/Repairs\
**Tags:** hyundai, dashboards, headlights\
**Created:** [December 27, 2022, 6:23am UTC](https://community.cartalk.com/t/ac-entertainment-system-and-headlights-not-working/188153 "2022-12-27T06:23:15Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![axriosn\_183498](https://avatars.discourse-cdn.com/v4/letter/a/c2a13f/32.png) [@axriosn\_183498](https://community.cartalk.com/u/axriosn_183498)\
**Post date:** [December 27, 2022, 6:23am UTC](https://community.cartalk.com/t/ac-entertainment-system-and-headlights-not-working/188153/1 "2022-12-27T06:23:15Z")

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When I put my key in, the entertainment system and headlights turn on, and the dashboard lights on the ac system turn on. Once I start the car, the headlights turn off when switched on or or put on auto and the AC system buttons don’t show they’re on and only outside air flows through. The entertainment system also turns off once the car starts. Any advice on what could be causing this and how to fix it? This is recently purchased 2020 Hyundai Elantra.

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**Author:** ![lion9car](https://avatars.discourse-cdn.com/v4/letter/l/59ef9b/32.png) [@lion9car](https://community.cartalk.com/u/lion9car)\
**Post date:** [December 27, 2022, 7:00am UTC](https://community.cartalk.com/t/ac-entertainment-system-and-headlights-not-working/188153/2 "2022-12-27T07:00:27Z")

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Is the car not still under warranty?

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**Author:** ![VDCdriver](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/vdcdriver/32/30_2.png) [@VDCdriver](https://community.cartalk.com/u/VDCdriver)\
**Post date:** [December 27, 2022, 1:37pm UTC](https://community.cartalk.com/t/ac-entertainment-system-and-headlights-not-working/188153/3 "2022-12-27T13:37:56Z")

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Free repairs–under warranty–at the dealership were not successful?

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**Author:** ![Purebred](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/purebred/32/46796_2.png) [@Purebred](https://community.cartalk.com/u/Purebred)\
**Post date:** [December 27, 2022, 1:46pm UTC](https://community.cartalk.com/t/ac-entertainment-system-and-headlights-not-working/188153/4 "2022-12-27T13:46:44Z")

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Or did you purchase it “As Is, No Warranty”, from a non-Hyundai used car lot?

Any dash lights on, ie CEL or Alternator?

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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:** [December 27, 2022, 4:19pm UTC](https://community.cartalk.com/t/ac-entertainment-system-and-headlights-not-working/188153/5 "2022-12-27T16:19:24Z")

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Any aftermarket electronics/alarm installed? They and the quality of their installation are often involved.

Any flood damage? That is harder to locate and fix, sometimes impractical economically.

Any CEL (Check Engine Light) or other warning lights when it’s running? Do those lights all come on when you first put in the key? And go out once the engine is running?

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**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\
**Post date:** [December 27, 2022, 4:30pm UTC](https://community.cartalk.com/t/ac-entertainment-system-and-headlights-not-working/188153/6 "2022-12-27T16:30:23Z")

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Your Hyundai has a 5 year 50K mile factory warranty to tne second buyer. I suggest you take the car to the nearest Hyundai dealer.