What are the reasons why the Mercedes-Benz G500 won't start?

2 Answers
NadiaFitz
07/24/25 1:03am
Mercedes-Benz G500 fails to start due to reasons such as a depleted battery or faulty spark plugs. Below are the specific details: Depleted Battery: When the voltage during startup falls below the minimum operating voltage required by the engine's computer, the computer fails to function, preventing the engine from starting. In this case, the battery should be recharged or replaced. Faulty Spark Plugs: Spark plugs are prone to damage, and issues like short circuits in high-voltage lines can prevent them from igniting. Additionally, low-quality spark plugs can also cause startup failures. It is recommended to replace the spark plugs in such situations.
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DeAlyssa
08/10/25 8:46pm
I recently encountered a situation where my Mercedes G500 wouldn't start, most likely caused by battery issues. For example, prolonged parking or extremely cold weather can lead to insufficient battery power - you turn the key but get no response. Additionally, if the starter motor is aged or slipping, it could also be the culprit. Mercedes' anti-theft system sometimes mistakenly locks the engine, especially when the key battery is dead or there are sensing issues. Remember to check if any fuses in the fuse box have blown, particularly those related to the starting circuit. Fuel pump failure could also prevent the car from starting, especially when you can hear sounds after ignition but the engine doesn't fire up. I suggest starting with simple solutions first - try using a battery charger. If that doesn't work, you'll need professional diagnosis at a specialized shop to avoid disrupting your driving plans. Components like batteries and starter motors require regular maintenance, especially in extremely cold regions where extra attention is needed.
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