What are the reasons for the Passat not responding when starting and the electric motor not making noise?
2 Answers
The reasons for the Passat not responding when starting and the electric motor not making noise are: 1. Insufficient battery power; 2. Engine malfunction; 3. Insufficient fuel pressure; 4. Short circuit in the throttle position sensor signal; 5. Poor fuel pump performance; 6. Spark plug failure. Taking the 2020 Passat as an example, it is a mid-size car with a front suspension of MacPherson independent suspension and a rear suspension of multi-link independent suspension. It is equipped with a 1.4T turbocharged engine, with a maximum horsepower of 150 PS, a maximum torque of 250 Nm, and a maximum power of 110 kW, matched with a 7-speed dual-clutch transmission.
I've been driving for over a decade and encountered many Passat starting issues where the engine wouldn't crank despite having battery power – quite frustrating. The most common cause is a faulty starter motor itself, like worn-out carbon brushes or a stuck solenoid switch, which completely disables the motor. Another possibility is a defective starter relay; this little box controls current flow – if it fails, electricity won't reach the motor, hence no sound. Always check fuses too, especially in the engine compartment's fuse box – replace any blown ones. Don't forget automatic transmission's neutral safety switch issues – the system prevents starting if not in P or N position. I advise against DIY fixes as they might cause more damage; immediately seek professional diagnosis and repair, otherwise roadside breakdowns become dangerously likely. Regular maintenance of these components saves much trouble. Start with simple checks like gently tapping the motor with tools to see if it temporarily revives, but ultimately rely on technicians for proper solutions.
