Why does the BMW 1 Series suddenly fail to start?

[OBeckett]

Here are the reasons why a BMW 1 Series suddenly fails to start: 1. Is the steering wheel in a locked position? The solution is simple: just turn the steering wheel forcefully while turning the key. Usually, the steering wheel lock can be quickly released, and ignition will happen instantly. 2. Was the gear not shifted back to P when parking? If the car could start in D or R gear, the sudden movement of the vehicle would pose a significant safety hazard. Therefore, for automatic transmission vehicles (AT, CVT, AMT), manufacturers preset this mode and repeatedly emphasize in the manual: ensure the gear is in the P position when starting. 3. Check if the battery has power. Failure to start may be due to a drained battery caused by leaving headlights on for a long time or the battery reaching the end of its lifespan. Generally, replace the battery in time according to the maintenance manual. 4. Check if there is fuel. If the fuel gauge shows below the red line, the car naturally won't start. Also, pay attention to the quality of the fuel. 5. No antifreeze added. Some car owners add water or low-quality antifreeze, which can cause the entire cooling system to freeze in extremely cold winter conditions, leading to engine cracks. This results in the car's water pump failing to operate, preventing ignition and damaging other engine components.