Battery standby losses / Standby mode
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Super Member
Joined: May 2014
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From: Florida
2018 E300 Luxury - P3 and more
Battery standby losses / Standby mode
Just curious, does anyone know how much % per day an E-Class will deplete it's battery(ies?) when it's parked?
The owner's manual has this ominous-sounding warning in it:
The owner's manual has this ominous-sounding warning in it:
If you leave the vehicle parked for longer than
four weeks, the battery may become damaged.
If you leave the vehicle parked for longer than six
weeks, it may suffer damage as a result of lack
of use.
Whereupon the manual then goes into details about how to put the car into Standby Mode. Does anyone have any thoughts on how to handle this? It does happen where I'll leave my car parked for an extended period of time.
four weeks, the battery may become damaged.
If you leave the vehicle parked for longer than six
weeks, it may suffer damage as a result of lack
of use.
Whereupon the manual then goes into details about how to put the car into Standby Mode. Does anyone have any thoughts on how to handle this? It does happen where I'll leave my car parked for an extended period of time.
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From: A Dutchy Living in Marseille, France
EQE SUV AMG-line 350+
the longest i leave my car is during holidays of 3 weeks, which is about once a year.
and it always starts up right away. - Never check at what level the batter was though...
If you put it in standby mode you lose the ability to track the vehicle and anti-theft won't work.
But if this is not a problem for you, then why not just put it in standby whenever you want?
and it always starts up right away. - Never check at what level the batter was though...
If you put it in standby mode you lose the ability to track the vehicle and anti-theft won't work.
But if this is not a problem for you, then why not just put it in standby whenever you want?
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From: WI
17 E43; 21 GLS580
MB vehicles have a myriad of systems that work even when the car is "off" they include airmatic, oil pumps, brakes, etc. In fact the car is never really off. Though they only use a trickle they do require the car to be used regularly to keep "healthy". If you are worried simply use a trickle charger if you are going to store the car for more than 3 weeks. They are very cheap. The main concern after a long period is the electronic parking brake. This is true of any parking brake regardless of type. If you are going to store the car for more than a few weeks, release the parking brake and chock one of the wheels with a ramp or 4x4. That will prevent the pad from rusting to the rotor.
Thread Starter
Super Member
Joined: May 2014
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From: Florida
2018 E300 Luxury - P3 and more
Just curious, what are people using for standby/trickle chargers? One of the local dealerships has every one of their showroom cars plugged into some sort of Mercedes-branded charger, although I suspect you can get the same charger elsewhere for less minus the MB sticker on the cover. Because of the electronics in an MB, I'd be afraid to connect a no-name Chinese charger to it.
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From: WI
17 E43; 21 GLS580
Cars in dealerships sit sometimes for mths, thus trickle charging is essential. Not to worry trickle charger are simple cheap tech, even the 15 dollar Chinese on will do the trick. Pretty sure the MB one is the same cheapo with a badge upgrade.
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From: God's County (Yorkshire)
Shanks’s Pony
Just curious, what are people using for standby/trickle chargers? One of the local dealerships has every one of their showroom cars plugged into some sort of Mercedes-branded charger, although I suspect you can get the same charger elsewhere for less minus the MB sticker on the cover. Because of the electronics in an MB, I'd be afraid to connect a no-name Chinese charger to it.
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Joined: Oct 2014
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From: WI
17 E43; 21 GLS580
For years I stored my s2000 for winter. All I did was disconnect the battery and block the wheels (no parking brake). After 6 mths, it always started like a song. Unfortunately new cars are never really "off" so that is not an option anymore. On our cars its almost impossible to do anything with the battery at all. Wnen I tuned my c400 disconnecting the battery took a gymnastics course since its basically inaccessible!
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Member
Joined: Nov 2017
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From: Eastern Maryland
ES350 E300 GLE350 GMC3500 Duramax
I wouldn't use a true trickle charger on those lead acid batteries. I use several Granite Digital 12 watt charger/maintainers on various types of batteries/vehicles and never a problem A trickle type usually produces a constant higher voltage that literally over charges most all batteries.
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From: Venice Florida
2018 S560
Pretty sure it's just the main big battery under the hood at this point. There were so many complaints with the secondary motorcycle looking battery (starter battery) failing that MB went to a system using a big capacitor instead of a battery and it really simplified things. But ya, anymore than a couple weeks I'd go with a battery maintainer hooked up to the car. Keep in mind though even when the the app is telling you the battery is critically low there is still plenty of power left in it, I think it's some kind of software bug.
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From: San Jose area
'19 E63S sedan
Your "three batteries" might be confusion because early 212s had a small "motorcycle" battery in the drivers knee area as the auxiliary battery. Later models switched to the supercap bank in the passenger footwell. No car had both.
