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Why does the coolant light turn on when driving 75 MPH on the motorway?

Tiny
MANDY LEE
  • MEMBER
  • 2012 SEAT IBIZA
  • 1.2L
  • 4 CYL
  • 2WD
  • MANUAL
  • 84,000 MILES
I drive my car daily as a carrier so it I stop and start all day. My car runs great no lights, but when I go on the motorway and hit 75 MPH-ish my red coolant light comes on and beeps. The car still runs great, no issues and after 5 minutes the light goes out. Still no issues, runs great.
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Monday, August 15th, 2022 AT 8:21 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
This means the engine is overheating, I would service the cooling system and make sure you do not have an obstruction like a plastic bag stuck in front of the radiator. Also, check the coolant level in the radiator and coolant reservoir. This guide and video should help:

https://www.2carpros.com/articles/engine-overheating-or-running-hot

and

https://youtu.be/GSE9skKnOgY

Do you hear the radiator cooling fans running when the light is on? Please run down these guides and report back.

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Monday, August 15th, 2022 AT 1:10 PM

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