12 Volt and Hood
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2022 EQS 580 4matic, 2022 GLS 450
12 Volt and Hood
Where is the 12 volt battery located and is there a way to open the hood in the EQS? I just took delivery on my EQS 580 that I ordered in July and there are a lot of things to figure out on this car. I find the owner's manual be bit confusing on some things plus there are a few errors. For example, the navigation satellite view setting is in the EQ tab not in the navigation panel 2D/3D tab contrary to the manual.
Last edited by rbourge; Jan 27, 2022 at 12:40 PM.
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17 E43; 21 GLS580
Opening the hood is very simple. There is a silly little tab where the usual hood opening lever is. Just pry it open, and the lever is there. I don't know where the 12v battery is, but from the pics I've seen, it doesn't appear to be there. The reason they don't want people opening the hood is liability. Under the hood, there are live 400V components. If you stick a screw driver in the wrong spot, there is a very real potential for electrocution. The only thing that could be user serviceable is adding coolant for the battery pack (2 reservoirs). As is routine for Mercedes, the owners manual is CRAP. Writen by lawyers rather than by the engineers who actually designed the car.Personally, I attempt to read the entire manual; however, since they are horrible, I just sit in the cabin a few afternoons and do some intensive practical "education" by going through the entire system.
Last edited by c4004matic; Jan 28, 2022 at 11:35 AM.
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From: WI
17 E43; 21 GLS580
Then, that makes 2 possible user maintainable items😁BTW if the 12V battery is out, the car is out of commission.Knowing where it is is crucial to know since my dealer is 90 miles away!
Last edited by c4004matic; Jan 28, 2022 at 12:53 PM.
Thread Starter
Junior Member
Joined: Jan 2022
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2022 EQS 580 4matic, 2022 GLS 450
I just opened the hood on my 580 but don't see anything that resembles a usual 12V car battery. There are some oddly labeled tanks of liquid that can be filled with something and several heat sinked electronic modules but can someone point out where the 12v battery is located?
Interesting to look at for automobile contents none the less.
Interesting to look at for automobile contents none the less.
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Member
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From: Western North Carolina
2022 EQS 450+, 2020 C300 Cab, 2019 Jeep GC
I can't speak to the 580 but on my 450+ the 12v battery is located at the rear of the hood opening, passenger side close to what we would have called the fire wall. It was very easy to spot as is the positive jump point. (big red square).
As to the tanks of liquid, I first though it was the washer fluid, but there is just too much of it. Then I read somewhere that it is coolant for the high voltage batteries.
As to the tanks of liquid, I first though it was the washer fluid, but there is just too much of it. Then I read somewhere that it is coolant for the high voltage batteries.
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S580
Since you have the 580 it comes with the HEPA filter package yes? In this case to get to the 12V you would have to take all of the plastic coverings off. Be sure to note where the different covering overlap or you may forget how to put it back together.
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17 E43; 21 GLS580
Last edited by c4004matic; Oct 10, 2022 at 12:56 AM.
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From: Santa Barbara
2017 Acura NSX
Yes, you are correct. Several times in my BEV vehicles or Plugin vehicles I have had to reset the system. By disconnecting the battery you force the system to reboot.
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Is that for Mercedes cars? The majority of control units are reset anyway by switching power off and waiting some 20 minutes. The ones that have continuous power supply should preferably be reset by pulling a fuse rather than disconnecting the battery. Of course even this should not be necessary (SW bugs should be and I'm aware of a few very rare cases where the "battery reset" is needed and is the only option. Could you give a list of issues (control units) based on your experience?
Junior Member
Joined: Sep 2022
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From: Santa Barbara
2017 Acura NSX
Is that for Mercedes cars? The majority of control units are reset anyway by switching power off and waiting some 20 minutes. The ones that have continuous power supply should preferably be reset by pulling a fuse rather than disconnecting the battery. Of course even this should not be necessary (SW bugs should be and I'm aware of a few very rare cases where the "battery reset" is needed and is the only option. Could you give a list of issues (control units) based on your experience?
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223.168 & 213.012 & 906.633 & 214.005
Mercedes too has a reboot option for the MBUX part (which is a bit like a computer) and if it boots, there is an option to revert to full factory settings (as a last resort).
Junior Member
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From: Santa Barbara
2017 Acura NSX
