View Battery Voltage ?
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C300 W206 2022
View Battery Voltage ?
My car is driven about 5k miles/yr, almost daily but short distances 2-5miles per drive. It has been the same pattern over many years and cars. I am used to replacing batteries about every 4+ years. At the 2 ½ year mark in January I went on vacation for 3 weeks. Car sent me battery low warning, understandable. Displayed in car as well, went away once it was driven again. I just got another low battery warning a week ago in my app (not car). Now that warning is on the main screen of the MercedesMeh app all the time (does not indicate which date it is from). Car is running fine without warnings. Long story short, is there anything on the app or MSUX that shows battery voltage so I can keep an eye on it? The service screen does not show it.
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My car is driven about 5k miles/yr, almost daily but short distances 2-5miles per drive. It has been the same pattern over many years and cars. I am used to replacing batteries about every 4+ years. At the 2 ½ year mark in January I went on vacation for 3 weeks. Car sent me battery low warning, understandable. Displayed in car as well, went away once it was driven again. I just got another low battery warning a week ago in my app (not car). Now that warning is on the main screen of the MercedesMeh app all the time (does not indicate which date it is from). Car is running fine without warnings. Long story short, is there anything on the app or MSUX that shows battery voltage so I can keep an eye on it? The service screen does not show it.
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In the workshop menu, go to the first option available :Vehicle data (video timestamp 0:21)
As for standby mode, activate here: https://www.mbusa.com/en/owners/manu...-a-long-period
As for standby mode, activate here: https://www.mbusa.com/en/owners/manu...-a-long-period
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You can buy inexpensive battery voltage monitors that plug into your cig lighter socket for continuous monitoring.
https://www.amazon.com/Charger-Adapt...22&sr=8-3&th=1
https://www.amazon.com/Charger-Adapt...22&sr=8-3&th=1
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C300 W206 2022
I went into the workshop menu and battery voltage showed around 12.6V. Car had been sitting for 24 hours.
When I started the car it jumped to 14.85V. What is Status? That fluctuated from 60 to 2,3 &4.
When I started the car it jumped to 14.85V. What is Status? That fluctuated from 60 to 2,3 &4.
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G550
12.6 volts is the expected voltage level for a healthy charged battery. 14.85 volts is the charging voltage level output by the alternator, which will usually kick in after the battery starts the engine. Status? I have no idea.
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Sounds about right, I would had thought "status" meant amp but doesn't make sense, 60 amps is impossible, does it have anything to do with the 48V mild hybrid battery?
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I am not blessed with a MH system in any of my cars, so I cannot speak to that. The Workshop menu is not documented in the owner's manual, and its contents are cryptic to a large extent. I would like to know more about the service codes displayed there.
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I wonder if WIS will talk about it.
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C300 W206 2022
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Not really. It's not showing charging current, but generator current as far as i know, so includes current dranw by 12V systems. So 20A is not that high, as it's only ~240W of power, used by all conputers, sound system, lights etc.
Last edited by Felix2024; May 20, 2025 at 04:50 AM.
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No, 48V system has own screen in service menu. It shows current in negative and positive values, depending if battery is being charged or discharged.
Not really. It's not showing charging current, but generator current as far as i know, so includes current dranw by 12V systems. So 20A is not that high, as it's only ~240W of power, used by all conputers, sound system, lights etc.
Not really. It's not showing charging current, but generator current as far as i know, so includes current dranw by 12V systems. So 20A is not that high, as it's only ~240W of power, used by all conputers, sound system, lights etc.
Interesting, on W205 for example, that number does go down to like 1 to 2amps, they changed it for the W206? Here is an example of it going to down to 3.7A, are we talking about the same thing? the IB number? https://cimg2.ibsrv.net/gimg/www.mbw...fde15b1ac.jpeg
Here is an example of a W204: https://cimg5.ibsrv.net/gimg/www.mbw...eb07aaeccc.jpg
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I am also thinking that since the voltage converter needs to assist with charging the 48V mild hybrid battery when engine is on, so since they have to charge two batteries, they prioritize the 48V mild hybrid battery, so the 12V battery never gets the attention it deserves. Unless I am missing something or a technical aspect of it?
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From: Texas
C300 W206 2022
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Need to drive for at least 60 minutes on highway. Don't worry about it to be honest but fully charge should go down.
