Wingroad Overheating Slow Warm Up

I also own a Wingroad (though not the same year) and faced a similar problem last year. Overheating and slow warm-up are classic symptoms. Have you checked the map thermostat specifically? In my experience, it's a common point of failure on these engines. It can lead to the cooling circuit motor to be defective and cause these issues. Is the coolant system in good condition, and have you checked for any leaks?

Thanks for the quick response! When you say "map thermostat", do you mean the electronic thermostat that controls the coolant flow? And if so, how did you diagnose it? Did you notice any other symptoms besides the overheating and slow warm-up, such as reduced fuel economy?

Yes, by map thermostat, I am referring to the electronically controlled thermostat. In my case, the diagnosis required professional equipment to properly assess the electrical activity and valve position. While it's theoretically possible to check its resistance with a multimeter, the results can be misleading. Considering the symptoms and the potential complexity, I would recommend a thorough inspection at a workshop. It's often the most efficient way to pinpoint the issue, although I understand the frustration. For the repair cost, be prepared to pay around 350€, depending on the parts used.

Thanks for the detailed advice! I suspected it might be the map thermostat but wanted a second opinion. I'll take it to a workshop for a proper diagnosis and repair. Hopefully, it won't break the bank. Thanks again!