# 2013 Mazda CX-5 - Cold light stays on

**URL:** <https://community.cartalk.com/t/2013-mazda-cx-5-cold-light-stays-on/175018>\
**Category:** Maintenance/Repairs\
**Tags:** mazda\
**Created:** [February 15, 2021, 7:55pm UTC](https://community.cartalk.com/t/2013-mazda-cx-5-cold-light-stays-on/175018 "2021-02-15T19:55:50Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![jimbob48](https://avatars.discourse-cdn.com/v4/letter/j/edb3f5/32.png) [@jimbob48](https://community.cartalk.com/u/jimbob48)\
**Post date:** [February 15, 2021, 7:55pm UTC](https://community.cartalk.com/t/2013-mazda-cx-5-cold-light-stays-on/175018/1 "2021-02-15T19:55:51Z")

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2013 mazda cx5 cold light not going off and poor heat

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**Author:** ![davepsinbox\_157004](https://avatars.discourse-cdn.com/v4/letter/d/73ab20/32.png) [@davepsinbox\_157004](https://community.cartalk.com/u/davepsinbox_157004)\
**Post date:** [February 15, 2021, 11:49pm UTC](https://community.cartalk.com/t/2013-mazda-cx-5-cold-light-stays-on/175018/2 "2021-02-15T23:49:13Z")

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Offhand it sounds like a bad thermostat.

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**Author:** ![oldnotdeadyet](https://avatars.discourse-cdn.com/v4/letter/o/a6a055/32.png) [@oldnotdeadyet](https://community.cartalk.com/u/oldnotdeadyet)\
**Post date:** [February 16, 2021, 12:21am UTC](https://community.cartalk.com/t/2013-mazda-cx-5-cold-light-stays-on/175018/3 "2021-02-16T00:21:37Z")

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Get it diagnosed quickly. It is not a good idea to ignore this one.

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**Author:** ![oldtimer-11](https://avatars.discourse-cdn.com/v4/letter/o/e79b87/32.png) [@oldtimer-11](https://community.cartalk.com/u/oldtimer-11)\
**Post date:** [February 16, 2021, 9:58pm UTC](https://community.cartalk.com/t/2013-mazda-cx-5-cold-light-stays-on/175018/4 "2021-02-16T21:58:04Z")

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Check coolant level in cold radiator and if full, replace thermostat,.

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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:** [February 16, 2021, 11:30pm UTC](https://community.cartalk.com/t/2013-mazda-cx-5-cold-light-stays-on/175018/5 "2021-02-16T23:30:37Z")

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A concern here is that there’s coolant leak. That can cause severe engine damage. Early signs are consistent with low level of coolant: it’s too low to reach one or more temperature sensors, or the place on the engine where a hose connects to the heater core.