Steroidas

Yup the second fan (smaller one) is AC fan. i am not sure if there are any difference between AC and climatronic, but now once the clima is on - both fans are triggered and spinning up

So the problem was in the main fan controller, as smaller fan connected directly to the battery was spinning. Thank you everyone for the help and suggestions!

Agree, i think i will do it during inspection. The only question is: what is the percentage what the bigger fan will start to fail soon and is it worth to change the both fans at the same time and forgot about them..

Okay, so did VCDS output test which is called Coolant fan control circuit 1 ( which is shown in this video ) and i find out that this test should kick out both fans, but in my case only larger one is spinning up..:(

Thank you very much for your input! lets see other opinions

In the other words how should i know if my fan or control module is faulty and had to be replaced?

So they always have to work in parallel or do thy have different purpose?

2006 1.9 BJB

Hey guys! Just wanted to ask for explanation: whats the purpose of the second radiator fan (marked in the photo) and under which circumstances he will kick off? Asking because i noticed that second one is always off and while clima is on auto mode the large one is only spinning. Thanks for the info!

It's a bit tricky then there is a airbag... I will try to do it.

Hello, So after a rain i got some leakage on the pillar. Car is without sunroof.. Any ideas from there this leak could be? Can it be a front window?