does the 2115410001 battery arrive charges with battery fluid in

Yes

Is this the correct auxiliary battery for my 2014 E350 vin WDDHF8JBXEA988881?

We do not recommend this battery for your application. The battery located here is a suitable match https://www.fcpeuro.com/products/mercedes-battery-ml350-ml63-amg-ml550-mer-0009829308

the site states that this battery will not fit my 2004 E320 base wagon but i believe this battery is the exact one, even part number, as the one that is slowly dying in my car. could you confirm that this will or will not fit my auto?

It will fit

I just want to check, this will fit my 2014 Mercedes E250 Bluetec? I am getting the "Auxiliary Battery Malfunction" issue. Thank you!

No, for your application we recommend 0009829308 or 0009829608

I have a 2005 C 320, will this fit my Mercedes?

A C320 does not have an Auxiliary Battery. The main battery is typically a group 49 size and is located below the under hood cabin air filter

my car is a 2015 Mercedes-benz GLK350. I checked my auxiliary battery part number is A0009827008. which is not exactly matched the part number on this website. Will this part fit my car?

Please send your VIN to products@fcpeuro.com and we can confirm fitment

Hi. I have question. I have 2012 e350 bluetec. I want to buy the battery. Website said it can fit my car but when i check my battery it looks different. Also, i have oem battery and it said (A 000 982 21 08) can you check again this battery?

This is the correct aux battery for your Bluetec, the number you provided for the main AGM battery we do not offer

Before I will place an order for this item, I want to be shure that this product fits my 2003 mercedes e320. VIN Number WDBUF65J33A170497.Thank you for your reply, Sincerely, Alex

The battery we offer here is an exact match for your vehicle