2014 Ds5 cooling fan problem.

[junkru11]

My ds5 cooling fan stays on when i shutdown the car. I taked it to dealer and they changed cooling fan reostat/rely witch is in the fan housing. But still fan wount stop it work in full power mode when car working and when shutoff..when car is shut off the fan works like 5min and shuts off. Dealer says that no fault when they did diagnost.
Can someone know are there more like rely inthe dash or under bonet somevere?
Thankyou

[GiveMeABreak]

It is normal for the cooling fan to operate after the engine has been switched off if the engine temperature / coolant is too high. It will switch off when the temperature comes down. Expect this in hot weather, especially in town / city driving where there is limited air cooling of the radiator, but this can also happen if you have been at motorway / highway / autobahn speeds and then stop the vehicle.

It's also why you shouldn't put your hands anywhere near the fan (s) in case they suddenly come on.

[junkru11]

But i drive like 10m and stop .it will start to work and outside is like 10c. And i shut down the car and fan works full power 5 min.i think its not normal.

[GiveMeABreak]

It's not the outside temperature, but the engine and coolant temperature that will trigger it. If it is doing the same thing in the morning when the engine is cool, where you start the engine and then stop it, then it isn't right.

What does the engine temperature show inside the car?

[junkru11]

Yeah it does it for first start.

[GiveMeABreak]

So you need to have a diagnostic done and the fault codes read, then pop them up here. It may be the temperature engine sensor, radiator fan assembly or relays / control unit - but without a fault code it will be guesswork.

[junkru11]

Hi. Now i know the problem. Problem is the engine valvecover . There is PCV membrane and its broken. And it couses engine to go safe mode. And thats why the fann works allthe time. Are here somebody done this job ???