Hello together, I have a problem with my Smart Fortwo 451 CDI. The engine gets hot, but none of the fans starts. Neither the one from the charging cooler, nor the one from the engine cooling. I tried the one from the charging cooler external and ran normally. Safes are also ok. I was at 2/3 workshops and nobody wanted to deal with the car. They said that Smart are complicated vehicles. I would be grateful for every tip.