Reply With QuoteIs this a Mk4 Golf era S3?
Could be the fuse box on top of the battery.
New Dubber
Quick question and it is a weird one. My fans are not coming on in the s3. I can jump the pins and the fan works but if everything is plugged in like it should be the fan doesn't come on. I have replaced my thermo fan switch, fan control module and have got a new thermostat to put in but thought I would chat with you all before I put it in. All the fuses are good but here is the weird part, if I pull fuse 16 in the side fuse holder the fan comes on regardless if the car is on or off. Put the fuse back in and the fan goes off, wtf.... Any thoughts, is there another relay or fuse that I don't know about? Another theory I have is that the thermostat is not opening and not allowing the coolant to pass over the thermo fan switch but everything comes back to why does the fan come on with the #16 fuse pulled out
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Ultimate Dubber
Is this a Mk4 Golf era S3?
Could be the fuse box on top of the battery.
'07 Transporter 1.9 TDI
'01 Beetle 2.0
New Dubber
Checked all that and all good. it is a Audi s3
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Super Moderator
VWwA Super Moderator
We know it's an S3. Which generation of S3? 8L, 8P or 8V?Originally Posted by gtronroids
2008 MkV Volkswagen Golf R32 DSG
2005 MkV Volkswagen Golf 2.0 FSI Auto
Sold: 2015 8V Audi S3 Sedan Manual
Sold: 2010 MkVI Volkswagen Golf GTI DSG
New Dubber
Sorry 8l I now know why the fan comes on if the #16 fuse is pulled. Pulse Width Modulation.
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New Dubber
I have the exact same problem.
Today I replaced both fans and the fan control unit and now they don't work at all! Not even with the A/C on!
However, if I pull fuse 16 they both come on.
I would really appreciate if anyone had a solution
Ultimate Dubber
As per above, which generation A3/S3?
'07 Transporter 1.9 TDI
'01 Beetle 2.0
New Dubber
I know why they come on when the fuse is pulled. Pulse width modulation. So this is normal. However I swear there has to be another relay/fuse hidden somewhere other than the fuse block in the door and the fuses atop the battery.
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New Dubber
If you are really desperate you can run a toggle to fuse 16.
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New Dubber
I want to fix the issue, and I have another daily so I don't need a 'makeshift' fix
I'm thinking it's the fan control module, I've purchased a new one to see if the new one I have is faulty.
Audi S3 8L
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