What is the reason why the Volkswagen Lavida 1.4T sometimes doesn't move when shifting gears?
2 Answers
There are two main reasons why the Volkswagen Lavida 1.4T sometimes doesn't move when shifting gears: functional obstacles and transmission failure. Functional obstacles: Generally, the inspection starts from the drive wheels, passes through the rear axle to the drive shaft, then to the transmission, and finally to the clutch. If the drive shaft rotates but the car does not move forward, the fault lies in the rear axle. Lift the rear axle and rotate one rear wheel. If the other rear wheel rotates in the opposite direction but the drive shaft does not rotate, it indicates that all the rivets of the driven bevel gear are sheared. If the other rear wheel does not rotate either, the half shaft should be disassembled and inspected to see if it is broken. Transmission failure: If the car does not move when starting in a certain gear and the drive shaft does not rotate, the fault is in the transmission. Remove the transmission cover and check whether the transmission shift fork is broken or whether the guide block fixing screws are loose. If the above inspections are normal, conduct a gear-shifting experiment. If the second shaft does not rotate when a certain gear is engaged, it means the half-round key of that gear is sheared.
I also experienced a situation where my Volkswagen Lavida 1.4T wouldn't move after shifting gears, mainly due to issues with the dual-clutch transmission system. Volkswagen's DSG transmission often suffers from signal delays caused by clutch overheating or sensor failures, especially during repeated gear shifts in urban traffic jams. In my case, the car wouldn't move when I pressed the accelerator, and the inspection revealed excessive clutch wear leading to poor contact. There can also be software bugs in the electronic control module, where the system fails to respond promptly to gear changes, requiring a program refresh at the dealership. Additionally, fuel pump or hydraulic leaks might interrupt power output, sometimes causing hesitation when starting from P gear. I recommend turning off the engine and waiting for 10 minutes before trying again. If the issue persists, avoid forcing the car to drive, especially on highways where an accident could be disastrous. It's better to take it to a professional shop early for a comprehensive diagnosis to prevent minor issues from turning into major repairs.
