2017 GLC43 Auxiliary Battery

3413 Views 4 Replies 4 Participants Last post by Echyy888, 11 mo ago

cwppwc

Discussion Starter · Feb 15, 2021

New member. The dreaded "Auxiliary Battery Malfunction" just showed up on my 2017 GLC43. I did a Google search and there doesn't seem to be any information on the actual location of the auxiliary battery for my car. I did see that Mercedes has put it in a large number of hiding spots, from front to back, on other models. Can anyone help?

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Toobad

· #2 · Feb 16, 2021

Hi and welcome to the forum. I changed my auxilliary battery after it malfunctioned and detailed the process in the link below. Bear in mind I have a 2016 UK diesel-engined RHD car but there could still be relaive location similarities even if the interior is a mirror image.

Auxilliary Battery Malfunction

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cwppwc

Discussion Starter · #3 · Feb 16, 2021

Toobad said:
Hi and welcome to the forum. I changed my auxilliary battery after it malfunctioned and detailed the process in the link below. Bear in mind I have a 2016 UK diesel-engined RHD car but there could still be relaive location similarities even if the interior is a mirror image.

Auxilliary Battery Malfunction

Thank you!

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Philipeo121

· #4 · Sep 6, 2021

cwppwc said:
Thank you!

In relation to this how do you know if it’s the battery or the voltage adapter??

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Echyy888

· #5 · 11 mo ago

Hi all,
I’ve got the same issue and the cost to replace the voltage converter using original Mercedes’ parts is super expensive. Has anyone had any feedback using the aftermarket converters available online? There appears to be many.

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