Hi, I have had similar problems with my 2018 Mercedes E-Class. I'm not a car expert, but I do have some experience with minor issues. In my case, the battery of the emergency battery was already completely discharged. I had it done in the garage and it cost 110 euros. It was annoying, but there were no more problems afterwards. To be on the safe side, I would still recommend having it looked at by a professional. Do you have any more information, for example how old your battery is and whether you've had similar problems before? This could help to identify your problem more precisely.

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Hi, thanks for your reply! I haven't had any similar problems so far and the car is only a good year old, so the battery should still be fairly new. I will definitely do the battery check at the garage. Unfortunately, I'm really not that knowledgeable when it comes to cars. My mileage is 117234 km and the last service was about 3 months ago. But I'm happy about any other tips here. Thanks again!

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Hi, glad my info was helpful. The more I think about it, the more I'm sure you're right, your problem could really be related to the emergency battery of the emergency call system. Still, I find it a bit strange because your car is really still new. Normally, batteries in a Mercedes C-Class should last at least 3 to 5 years. But hey, every case is different. One possible reason could be that your electronics network consumes a lot of energy. Do you often use functions such as seat heating, air conditioning, radio or infotainment? Even short journeys can put a strain on the battery, as starting the engine consumes a lot of energy and short journeys don't give the battery enough time to charge. But as I said, it would be best in your case to have this checked by a specialist so that you can be one hundred percent sure. I hope this helps you a little and would be happy if you could keep us updated after your workshop appointment. Good luck with it!

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Hey, your advice is really helpful! It's true that I often use the extras like heated seats and air conditioning. I also drive mainly short distances to the shops and so on. The excessive energy consumption thing sounds plausible. I will definitely follow all your tips and hope that the problem will be solved soon. I'll definitely get back to you when I have news from the garage. Thank you very much and have a nice day!

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