Is there a secondary battery?
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Member
Joined: May 2019
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A220
Is there a secondary battery?
It occured to me that features like Mercedes Connect and the "automatically close sunroof when it rains" must imply the car is "listening" and "watching" even when the engine is off. Does anyone know how it powers those services? For things like rain detection, I'd assume it has to check on a semi-frequent basis. This made me wonder if it's slowly draining the main battery or if there's a second one for these scenarios. Anyone know how this works?
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Joined: Feb 2019
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GLA
It occured to me that features like Mercedes Connect and the "automatically close sunroof when it rains" must imply the car is "listening" and "watching" even when the engine is off. Does anyone know how it powers those services? For things like rain detection, I'd assume it has to check on a semi-frequent basis. This made me wonder if it's slowly draining the main battery or if there's a second one for these scenarios. Anyone know how this works?
i think in A220, it's taking power from the main battery, which is only one battery the car has
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Joined: Aug 2018
Posts: 60
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From: Seattle
2019 A220 4MATIC
It occured to me that features like Mercedes Connect and the "automatically close sunroof when it rains" must imply the car is "listening" and "watching" even when the engine is off. Does anyone know how it powers those services? For things like rain detection, I'd assume it has to check on a semi-frequent basis. This made me wonder if it's slowly draining the main battery or if there's a second one for these scenarios. Anyone know how this works?
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Member
Joined: May 2019
Posts: 104
Likes: 7
A220
Thanks for the confirmation. I guess I'm too old and still remember how leaving one dome light on over night could drain a battery. It's interesting they can maintain the sensors and remote access for weeks. Wonder how that impacts battery over its lifespan.
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Joined: Feb 2018
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amg a45
i have a w176 amg a45 How do you put it into standby mode? thank you
