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GLE Class (V167) Produced 2020 to present

Aux battery

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Old Nov 14, 2024 | 02:45 PM
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2023 GLE3502W, 2024 GLC3002W, 1967 Pontiac GTO 4 sp (sold...sniff)
Aux battery

Does our 2023 GLE350 use an aux battery like our 2014 ML350 did? If so is it located in the same area?
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Old Nov 15, 2024 | 08:47 AM
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Your rescue card will tell you. Find it here:

https://rk.mb-qr.com/en/
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Old Dec 4, 2024 | 02:23 PM
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2023 GLE3502W, 2024 GLC3002W, 1967 Pontiac GTO 4 sp (sold...sniff)
Thanks for your advice. I truly appreciate self help suggestions. This one has me a bit confused. The 2023 GLE350 is not a mild hybrid. Hence no 48V battery. I tried the link and there were so many choices I took the easy way out and scanned the QR code on the fuel door. The picture below is what I got It shows a 12V and 48V battery. I'm gonna poke around under the carpet and see what might be hiding where it says the 48V lives.
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Old Dec 4, 2024 | 04:45 PM
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That's weird that the rescue card doesn't show the location. Maybe it's so small and the output isn't very high so it's not pertinent to a rescue. Hopefully someone else will chime in with additional info.

Are you receiving some type of error?
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Old Dec 4, 2024 | 05:00 PM
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Originally Posted by wildta
That's weird that the rescue card doesn't show the location. Maybe it's so small and the output isn't very high so it's not pertinent to a rescue. Hopefully someone else will chime in with additional info.
You're overthinking. It's more likely the card is simply showing the 48v battery for all models. For the purposes of rescuers, it's better to assume that all models have a 48v lithium battery than to have to know the specific model and potentially not know the 48v battery is there. The card does indeed show multiple 12v batteries even though the aux battery is very small in the older 164 and 166 models.
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Old Dec 4, 2024 | 06:35 PM
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Originally Posted by jkaetz
You're overthinking. It's more likely the card is simply showing the 48v battery for all models. For the purposes of rescuers, it's better to assume that all models have a 48v lithium battery than to have to know the specific model and potentially not know the 48v battery is there. The card does indeed show multiple 12v batteries even though the aux battery is very small in the older 164 and 166 models.
That makes sense. Thanks.
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Old Dec 4, 2024 | 06:42 PM
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Originally Posted by jkaetz
You're overthinking. It's more likely the card is simply showing the 48v battery for all models. For the purposes of rescuers, it's better to assume that all models have a 48v lithium battery than to have to know the specific model and potentially not know the 48v battery is there. The card does indeed show multiple 12v batteries even though the aux battery is very small in the older 164 and 166 models.
I think you're right.

I just had to to get a new gas flap sticker, and it's VIN-specific, so I thought it was a specific to my exact configuration. Guess not.
The shop that was replacing the gas flap plastic structure (single use only) wasn't "theft certified" so I had to show my ID at the dealer to get it. $40, 2 days.

So I just checked my QR code and I got what looks like the exact same thing as posted above, with additional text/explanation. PDF attached.
It's titled "Mercedes Benz GLE SUV 2019 5D 167.1," so it looks generic to the 167 SUV.
Attached Files
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Old Dec 4, 2024 | 06:46 PM
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Originally Posted by mikapen
I think you're right.

I just had to to get a new gas flap sticker, and it's VIN-specific, so I thought it was a specific to my exact configuration. Guess not.
The shop that was replacing the gas flap plastic structure (single use only) wasn't "theft certified" so I had to show my ID at the dealer to get it. $40, 2 days.

So I just checked my QR code and I got what looks like the exact same thing as posted above, with additional text/explanation. PDF attached.
It's titled "Mercedes Benz GLE SUV 2019 5D 167.1," so it looks generic to the 167 SUV.
Generic for sure, on page 2 : "Note Vehicles of this type can additionally be equipped with a 48 V On-board electrical system. The 48 V On-board electrical system is deactivated as soon as at least one airbag has been triggered in the event of a crash. Further details can be found in the rescue manual"
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Old Dec 5, 2024 | 11:03 AM
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Originally Posted by wildta
That's weird that the rescue card doesn't show the location. Maybe it's so small and the output isn't very high so it's not pertinent to a rescue. Hopefully someone else will chime in with additional info.

Are you receiving some type of error?
No error yet. But I want to know if there is an aux battery and where it is before I have to replace it. Thanks.
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Old Dec 5, 2024 | 05:06 PM
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Originally Posted by pjw1967
No error yet. But I want to know if there is an aux battery and where it is before I have to replace it. Thanks.
I see no indication that there is an aux 12v battery for the 167 series vehicles.
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Old Feb 17, 2025 | 07:00 PM
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UPDATE. I stumbled on this video for a 2020 which should be the same for a 2023 350. Doubt I'll tackle this myself when the time comes. Curious though about accessing it. In vid it looks like the passenger seat pivots backwards out of the way by removing the front mounting bolts. Again, I ain't doin' it.

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Old Feb 17, 2025 | 07:42 PM
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Originally Posted by pjw1967
UPDATE. I stumbled on this video for a 2020 which should be the same for a 2023 350. Doubt I'll tackle this myself when the time comes. Curious though about accessing it. In vid it looks like the passenger seat pivots backwards out of the way by removing the front mounting bolts. Again, I ain't doin' it.

https://www.youtube.com/watch?v=XDoWg8nr18Q
Hmmm, thought it was just like other MB models where the aux might be under the glovebox and close to passenger side foot well, didn't know the V167 GLE had it somewhere else.
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Old Feb 18, 2025 | 11:09 AM
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It seems to be too small and lightweight to be an aux battery. According to the part number, that's a voltage converter, not an aux battery. A failure in the voltage converter would probably generate some aux battery codes.
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Old Feb 18, 2025 | 12:15 PM
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Originally Posted by BlueYonder
It seems to be too small and lightweight to be an aux battery. According to the part number, that's a voltage converter, not an aux battery. A failure in the voltage converter would probably generate some aux battery codes.
​​​​​​Yup, the voltage converter did replace the aux battery in newer MBs, they serve the same function as the aux battery I think.
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Old Feb 18, 2025 | 01:46 PM
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Originally Posted by W205C43PFL
​​​​​​Yup, the voltage converter did replace the aux battery in newer MBs, they serve the same function as the aux battery I think.
Unless I have the terminology wrong, my understanding is that the voltage converters are between the 12v battery and the 48v battery.
And the underseat battery is a battery.
There are two converters - 12v to 48v, and 48v to 12v. The latter is the only way the 12v battery receives a charge. (Except for external chargers or jump starters.)
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Old Feb 18, 2025 | 04:41 PM
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Originally Posted by mikapen
Unless I have the terminology wrong, my understanding is that the voltage converters are between the 12v battery and the 48v battery.
And the underseat battery is a battery.
There are two converters - 12v to 48v, and 48v to 12v. The latter is the only way the 12v battery receives a charge. (Except for external chargers or jump starters.)
Ah my apologies I thought you were talking about the super capacitor in the form of the traditional aux battery.
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Old Feb 18, 2025 | 05:28 PM
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The 2023 GLE350 does not have the 48 volt system. This is why I started the quest to see if there was an aux battery.
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Old Feb 18, 2025 | 05:50 PM
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Originally Posted by pjw1967
The 2023 GLE350 does not have the 48 volt system. This is why I started the quest to see if there was an aux battery.
I misunderstood and missed your pre-facelift 350.
It only has one battery, to my knowldge.
You could scan the QR code on your gas flap to see location of any batteries.
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Old Feb 19, 2025 | 11:06 AM
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If anything that's an emergency battery to power the Cellular/SOS system after a crash.
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