The reason why the brake is hard to press and the car won't start is largely due to the absence of vacuum assistance from the vacuum booster pump. In simpler terms, if the vacuum booster pump is not providing assistance, the brakes lose their power assist, making them hard to press; and only when the engine is running can the vacuum booster pump generate the required vacuum assistance.
There are several reasons why an automatic car might not start. Firstly, check if the fuel tank is empty. Secondly, examine the vehicle's battery for any signs of depletion. Moreover, automatic cars will not start if they are not in the 'P' (Park) or 'N' (Neutral) positions. If they are in 'R' (Reverse) or 'D' (Drive), they won't start. Additionally, if the steering wheel is locked, the car cannot start. These issues are generally quite apparent.
If the throttle valve inside the engine is dirty, the car might not start when it's cold. This is because carbon deposits can block the throttle, preventing adequate airflow needed to start the engine. You can try pressing the accelerator to increase the throttle opening to see if the car starts. If these common issues have been addressed and the problem persists, it's advisable to contact a 4S shop or a repair shop for a check-up and repair.
Due to the presence of a torque converter in automatic vehicles, there isn't a rigid connection between the gearbox and the engine. Therefore, it's crucial to note that push-starting an automatic vehicle is not recommended. It's suggested to carry a portable charger in the car for emergency situations. In the event of an emergency, use the portable charger to charge the battery. After connecting the charger to the positive and negative terminals of the battery and setting the correct charging parameters, start charging. Once charged, you can start the vehicle normally.
