Is it free to check for faults at a 4S shop?

[LincolnMarie]

Going to a 4S shop to check for faults is generally free. General equipment faults refer to those that cause the car to stop running or reduce performance, but generally do not cause damage to parts and assemblies. Fault detection can be performed by replacing parts and using vehicle-specific tools in a short period. Detecting common faults at a 4S shop: Currently, the electronic control systems of cars are very advanced. As long as there is a common fault in the vehicle, the onboard computer will generate a fault code. The car repair technician uses a computer to diagnose the fault code generated by the driving system, and then, based on the owner's description, can quickly determine the location of the problem and provide targeted treatment. Car fault repair: When a car has a common fault, it rarely requires the repair technician to dismantle the car and check for faults bit by bit. Most of the time, the above method is used directly. Therefore, if the car is not under warranty, going to a 4S shop to check the vehicle will mostly be charged.