Coolant light is flashing

Tiny
JOHN MYDDLETON
  • MEMBER
  • 1989 VOLKSWAGEN VANAGON
  • 0.8L
  • AUTOMATIC
  • 280,000 MILES
When I start the van the red warning light continues to flash. I have topped up the coolant reservoir to the correct level, the light continues to flash. I was told sometime ago that there is another coolant bottle. I need the location to check it out. Thanks, John.
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Monday, August 6th, 2018 AT 12:14 PM

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Tiny
JACOBANDNICKOLAS
  • EXPERT
Hi and thanks for using 2CarPros.com.

I am not familiar with a second reservoir. I have attached four pictures of the system for you to look through. They are exploded views of the system and components. I will tell you that there was a technical service bulletin indicating that the water pump may leak very small amounts of coolant onto the sensor which can lead to the light being on. Picture 5 is one I am not familiar with, but take a look at it and see if that helps. Picture 6 is the one I am familiar with.

Additionally, here are a couple links which describe temperature sensor issues as well as how to pressure test a cooling system to find a leak:

https://www.2carpros.com/articles/symptoms-of-a-bad-coolant-temperature-sensor

https://www.2carpros.com/articles/radiator-pressure-test

Let me know if this helps or if you have other questions.

Take care,
Joe
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Tuesday, August 7th, 2018 AT 8:29 PM

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