What is the reason why Landwind X5 stalls automatically?

I met him yesterday. I drove around town for over ten minutes and suddenly stalled. The ignition could not restart, I had to stop in the middle of the road. me, thinking I didn't know how to drive. The car is a high-end X5 manual configuration. She traveled 50,000 kilometers in 3 years. She drove in an urban area. It is generally serviced in a 4S store. I also purchased an extended warranty on the recommendation of the 4S store. , so I asked the emergency services to tow the car directly to the 4S store. The receptionist After a while the staff told me that I need to replace the crankshaft sensor. The quote was for over 1,000 points, including 1,000 points for labor and time. more than 100 points for the sensor. They said they would waive the inspection fee for me. I was shocked at the time. Isn't this included in the extended warranty? The receptionist said the exWarranty voltage only covers the motor. Well, this is the legendary 4S store. I asked why the labor hour fee was so high, and the explanation she gave me was that it was stipulated by the company and had been filed with the pricing department. Anyway, that was the price, so there was no negotiation. Later, the car started to start again after being parked for a while, so I took the car to a private auto repair shop and asked him to replace it for me, which cost me 550 yuan . I completely abandoned the Landwind 4S store. This quality and service is second to none. I will stay away from Landwind in the future.