PEUGUET 605 SV 3.0 V6 - SENSOR PROBLEMS

Good, I'm new in the forum! I have a similar problem. A very strong storm was a month ago and the streets were flooded half .. something normal here ... and when I went to turn the car the next day, I noticed that when putting the car in contact the fan began to walk (I suppose the slow speed because if I take the cable to the brown bulb, turn the speed fast) ... I did not give it much importance, thinking that it was normal and that I was going to solve it ... He wants to charge very expensive to check it because it is a high -end car and they do not realize that the truth is that I do not have that money ... if anyone can give me a hand ... I suppose it must be some bulb that fucks ... in the photos, I do not understand where that blue bulb is ... or at least in mine it is not like that ... it is a Peugeot 605 SV3.0 V6 Model 93
I thank you! If they need any photo they tell me and I upload it!