# Transaxle/cooling system warning light

**URL:** <https://community.cartalk.com/t/transaxle-cooling-system-warning-light/141438>\
**Category:** Maintenance/Repairs\
**Created:** [June 2, 2019, 8:57am UTC](https://community.cartalk.com/t/transaxle-cooling-system-warning-light/141438 "2019-06-02T08:57:11Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Texarkanababy68\_152761](https://avatars.discourse-cdn.com/v4/letter/t/51bf81/32.png) [@Texarkanababy68\_152761](https://community.cartalk.com/u/Texarkanababy68_152761)\
**Post date:** [June 2, 2019, 8:57am UTC](https://community.cartalk.com/t/transaxle-cooling-system-warning-light/141438/1 "2019-06-02T08:57:11Z")

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I have a 2003 Ford Focus ZX3 2.0L Zetec manual transmission that just had the slave cylinder replaced now when I turn on the AC the automatic transaxle/cooling system warning light comes on, the temperature gauge slams into the red & the car bogs down. What does this mean and how do I fix it?

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**Author:** ![COROLLAGUY1](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/corollaguy1/32/7575_2.png) [@COROLLAGUY1](https://community.cartalk.com/u/COROLLAGUY1)\
**Post date:** [June 2, 2019, 11:47am UTC](https://community.cartalk.com/t/transaxle-cooling-system-warning-light/141438/2 "2019-06-02T11:47:54Z")

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> [@Texarkanababy68\_152761](#):
>
> I turn on the AC the automatic transaxle/cooling system warning light comes on,

Isn’t you car a manual transaxle?(Quote) I have a 2003 Ford Focus ZX3 2.0L Zetec manual transmission

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**Author:** ![Texarkanababy68\_152761](https://avatars.discourse-cdn.com/v4/letter/t/51bf81/32.png) [@Texarkanababy68\_152761](https://community.cartalk.com/u/Texarkanababy68_152761)\
**Post date:** [June 2, 2019, 11:53am UTC](https://community.cartalk.com/t/transaxle-cooling-system-warning-light/141438/3 "2019-06-02T11:53:50Z")

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Yes it is that’s where the confusion comes in at but that’s what the manual said the light was called

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**Author:** ![COROLLAGUY1](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/corollaguy1/32/7575_2.png) [@COROLLAGUY1](https://community.cartalk.com/u/COROLLAGUY1)\
**Post date:** [June 2, 2019, 11:56am UTC](https://community.cartalk.com/t/transaxle-cooling-system-warning-light/141438/4 "2019-06-02T11:56:40Z")

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First,check if there is coolant leak and then replace the thermostat.I am guessing that the thermostat is stucked close,creating a overheating condition.

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**Author:** ![Rod-Knox](https://avatars.discourse-cdn.com/v4/letter/r/a183cd/32.png) [@Rod-Knox](https://community.cartalk.com/u/Rod-Knox)\
**Post date:** [June 2, 2019, 1:36pm UTC](https://community.cartalk.com/t/transaxle-cooling-system-warning-light/141438/5 "2019-06-02T13:36:30Z")

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By all means verify that the cooling system is full.

I suspect that when replacing the clutch slave cylinder some electrical component was left disconnected or a wire was somehow shorted. or possibly a common ground connection was left unconnected. Replacing the slave cylinder required removing the transaxle which involves disconnecting several harnesses I believe.