Audi A3 2015. 2.0 TDI - TDI 184 main fan comes on a lot, where is CTS?

Honest John Back Room » Technical matters
View Threaded
Tue 24 Oct 2023 13:37
Audi A3 2015. 2.0 TDI - TDI 184 main fan comes on a lot, where is CTS? - carnut1980

Hi all, my main cooling fan comes on when it likes, sometimes 30 seconds after running the car! Never overheats, temp gauge rises to the middle and stays there! My mechanic read the codes and said Coolant temp sensor no.2 shows no reading, and is U/S!

I have bought both CTS anyway, PN 059919501a, the smaller one, and the other, PN 8170794RMP

Where are these located, and are they easy to swap out? cheers

Reply | Report as offensive | Link
Tue 24 Oct 2023 13:49
Audi A3 2015. 2.0 TDI - TDI 184 main fan comes on a lot, where is CTS? - elekie&a/c doctor
One located on the thermostat housing, the other on the radiator outlet pipe. Access can be tricky on the radiator sensor.
Reply | Report as offensive | Link
Tue 24 Oct 2023 13:55
Audi A3 2015. 2.0 TDI - TDI 184 main fan comes on a lot, where is CTS? - carnut1980

cheers! So the smaller one (first one i mentioned) is where please?

Reply | Report as offensive | Link
Tue 24 Oct 2023 14:42
Audi A3 2015. 2.0 TDI - TDI 184 main fan comes on a lot, where is CTS? - elekie&a/c doctor
Not totally sure , but the smaller one is on the radiator. This is more likely to be the one at fault.
Reply | Report as offensive | Link