# 2007 Hyundai Tucson - Make the light go away

**URL:** <https://community.cartalk.com/t/2007-hyundai-tucson-make-the-light-go-away/146155>\
**Category:** Maintenance/Repairs\
**Tags:** hyundai\
**Created:** [August 6, 2019, 8:24pm UTC](https://community.cartalk.com/t/2007-hyundai-tucson-make-the-light-go-away/146155 "2019-08-06T20:24:21Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![BrianConnor](https://avatars.discourse-cdn.com/v4/letter/b/90ced4/32.png) [@BrianConnor](https://community.cartalk.com/u/BrianConnor)\
**Post date:** [August 6, 2019, 8:24pm UTC](https://community.cartalk.com/t/2007-hyundai-tucson-make-the-light-go-away/146155/1 "2019-08-06T20:24:21Z")

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Engine light on ,I disconnect neg battery terminal light stayed on , I know no thermostat in cooling system. Any help please.

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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:** [August 6, 2019, 8:31pm UTC](https://community.cartalk.com/t/2007-hyundai-tucson-make-the-light-go-away/146155/2 "2019-08-06T20:31:53Z")

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> [@BrianConnor](#):
>
> Engine light on

That is telling you there is a problem… we need the error codes

> [@BrianConnor](#):
>
> disconnect neg battery terminal light stayed on

'Cause there still is a problem… we still need the error codes, in the form P1234. Most auto parts store will read them for free.

> [@BrianConnor](#):
>
> I know no thermostat in cooling system

Well THAT could be your problem. The wrong or no thermostat will set a code in many cars.