Why Won't the BMW e90 Start?

[LeElijah]

There are several reasons why a BMW e90 may fail to start, including a dead battery or lack of antifreeze. Here are the specific reasons: Dead Battery: A dead battery can result from leaving headlights on for an extended period or simply due to the battery reaching the end of its lifespan. It is generally recommended to replace the battery every two years. Additionally, installing xenon headlights, high-power audio systems, or DVD players can also cause electrical faults in the vehicle. Checking for a dead battery is simple—just press the horn. Out of Fuel: If the fuel gauge shows the level below the red line, the car naturally won't start. It's also important to pay attention to fuel quality. Always refuel at reputable gas stations, and when traveling, consider using a gauze filter over the fuel nozzle to filter out impurities. Lack of Antifreeze: Some car owners use water or low-quality antifreeze, which can lead to the entire cooling system freezing in extremely cold winter conditions. This can cause the engine to crack, render the water pump inoperable, prevent the car from starting, and damage other engine components. Incorrect Gear Position: When starting a BMW, the gear must be in the P (Park) or N (Neutral) position. If it's in R (Reverse) or D (Drive), the car won't start.