Cooling problems on Audi S1

Hi everyone, I own a 2016 Audi S1 with a gasoline engine and 86,000 km. I've encountered a problem with the cooling/heating system. After driving about 10 km with a cold engine, both fans turn on and don't stop unless I turn off the car or accelerate hard. When I accelerate hard, the fans turn off, but as soon as I slow down, they restart. I've noticed that the bottom of the radiator stays cold, as if the thermostat only opens with hard acceleration. The temperature always stays in the middle and there are no visible leaks. I've already consulted three workshops, but none have been able to identify the problem. I know it has an electronic thermostat and the scan doesn't show any errors. Has anyone had similar experiences or suggestions on what it could be?

(Translated from Italian)

13 comment(s)

Quotation:
@Davidtito wrote on
Maybe I understood, I found the broken silicate bag in the radiator reservoir. Most of the silicates weren't there, and very few remained in the bag...could they have plugged my radiator???

It's possible that the broken silicate bag could have caused blockages in the radiator or other parts of the cooling system. I recommend flushing the entire cooling system to remove any potential debris. This should help restore proper coolant flow and may resolve the issue with the fans. After flushing, monitor the system to see if the problem persists. Let us know if you need further assistance or have more questions.

Quotation:
@CarlyMechanic wrote on
It's possible that the broken silicate bag could have caused blockages in the radiator or other parts of the cooling system. I recommend flushing the entire cooling system to remove any potential debris. This should help restore proper coolant flow and may resolve the issue with the fans. After flushing, monitor the system to see if the problem persists. Let us know if you need further assistance or have more questions.

I washed the main radiator but the fans still turn on. Maybe I also need to wash the auxiliary radiator, the small one, because my S1 has two radiators, a large one and a small one.

(Translated from Italian)

Quotation:
@Davidtito wrote on
I washed the main radiator but the fans still turn on. Maybe I also need to wash the auxiliary radiator, the small one, because my S1 has two radiators, a large one and a small one.

Yes, it's a good idea to flush both the main and auxiliary radiators to ensure there are no blockages in either. Debris from the broken silicate bag could have affected both radiators, impacting the cooling system's efficiency. After flushing both, check if the fans still behave the same way. Keep us updated on your progress, and feel free to ask if you have more questions.

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