Remember that is a particular vehicle system malfunctions, it’s the fuse which takes all the brunt and is burned out. If you have a relatively new battery, though, but the engine won’t start, trickle charge your battery by using a 12-volt trickle charger.įuse and relays. The fuse on your starter circuit, Ignition, EIS, or Fuel Pump should be checked next if the battery is not the issue. Most vehicle owners would replace the battery only after ten years of use, but the replacement should be considered as early as 6 to 7 years. The most obvious reason is that the battery might already be too old. Reasons why your Mercedes Benz won’t start:īattery. you put the key in the ignition, but it won’t start.your car turns over, but it won’t start.you hear a clicking noise, but it won’t start.You would know that your Mercedes won’t start if: it’s Drive Authorization System should start.it should have electrical power to crank the engine.However, before you attempt to fix the issue yourself, a few conditions need to be met first such as: If your Mercedes Benz doesn’t start, you can perform a few troubleshooting to avoid Mercedez Benz repair Laguna Niguel costs.

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