R56 :: Hatch Talk (2007+) MINI Cooper and Cooper S (R56) hatchback discussion.
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R56 Fan toggle switch

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Old Jul 6, 2025 | 11:52 AM
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J4Y-R56's Avatar
J4Y-R56
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Fan toggle switch

Hi guys

So after a full engine rebuild and alot of mods, after shut off the hot turbo was causing my hood and whole engine bay to get extremly hot.

I tried connecting the fan up to a new relay and switch with no joy. So I came up with another idea which has worked but not sure if I will eventually cause any damage.

I have Connected 1 wire to pin 85 on the fan relay low speed and then to a toggle switch I have then connected a wire to a ground point and again to a toggle switch. Basically I have grounded out the low speed relay for the fan. This helps cool the turbo after shut down with just the ignition on. I am planning to run the fan for about 3 or 4 minutes. Is this set up safe enough to not fry anything?

Thanks
Jay
 
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Old Jul 8, 2025 | 09:23 AM
  #2  
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Coz3z3
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Originally Posted by J4Y-R56
Hi guys

So after a full engine rebuild and alot of mods, after shut off the hot turbo was causing my hood and whole engine bay to get extremly hot.

I tried connecting the fan up to a new relay and switch with no joy. So I came up with another idea which has worked but not sure if I will eventually cause any damage.

I have Connected 1 wire to pin 85 on the fan relay low speed and then to a toggle switch I have then connected a wire to a ground point and again to a toggle switch. Basically I have grounded out the low speed relay for the fan. This helps cool the turbo after shut down with just the ignition on. I am planning to run the fan for about 3 or 4 minutes. Is this set up safe enough to not fry anything?

Thanks
Jay
Since you are tuned, I would say ask your tuner if they can command them to stay on longer, since I am sure they have adjusted it to have them come on sooner than stock. And if they cannot, you can probably have them adjusted through ncsexpert if you are able to get into that.
 
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