Sport Mode Trans Fluid Smell
Thread Starter
Newbie
Joined: Mar 2022
Posts: 3
Likes: 2
From: Southern Ohio
2010 Mercedes E350 4Matic Sport, 2008 Volkswagen Passat 3.6L 4Motion Sport 4dr
Sport Mode Trans Fluid Smell
2010 E350 4Matic... 155,000 mi., 2nd owner (bought in Jan. 2022). All MB recommended services completed. In sport mode, I get a smell not present in comfort mode. Smells like transmission fluid. Thoughts? Also, the dreaded "Auxillary Battery Malfunction" present. Do it myself or take to dealer? Lastly, it has a whine while in motion. Sounds like from passenger side engine. Maybe transmission or 4Matic related? I took it back to the dealer after I bought it. He replaced driver's side wheel bearing. Not the same kind of noise. Thanks for any help you folks can give! It is most appreciated! (Now, can ya help me with my possessed by the devil Passat? Lolol!)
Senior Member
Joined: Sep 2019
Posts: 266
Likes: 305
2011 Mercedes E350 4Matic Wagon
Can't comment on the trans fluid smell you're getting because I've never encountered it on my '11 E350 wagon while in sport mode. The aux battery I can comment on as I had to change my aux battery after getting the same warning on the dash. My aux battery is located in the driver's side dash below the speedometer housing. There is a panel on the left side of dash that I had to pry to access the aux battery. Watch the YouTube video that is attached.
As to where to get the battery, FCP Euro has the OEM battery and it is covered by their lifetime warranty.
As to where to get the battery, FCP Euro has the OEM battery and it is covered by their lifetime warranty.
Thread Starter
Newbie
Joined: Mar 2022
Posts: 3
Likes: 2
From: Southern Ohio
2010 Mercedes E350 4Matic Sport, 2008 Volkswagen Passat 3.6L 4Motion Sport 4dr
Can't comment on the trans fluid smell you're getting because I've never encountered it on my '11 E350 wagon while in sport mode. The aux battery I can comment on as I had to change my aux battery after getting the same warning on the dash. My aux battery is located in the driver's side dash below the speedometer housing. There is a panel on the left side of dash that I had to pry to access the aux battery. Watch the YouTube video that is attached.
As to where to get the battery, FCP Euro has the OEM battery and it is covered by their lifetime warranty.
https://youtu.be/r2VWVmccdtk
As to where to get the battery, FCP Euro has the OEM battery and it is covered by their lifetime warranty.
https://youtu.be/r2VWVmccdtk
Senior Member
Joined: May 2021
Posts: 319
Likes: 138
From: Miami
W212 E350
Awesome! Thank you for your help! The video helps immensely. I think I can change it on my own. Locally, we have ONE MB/German technician. I have had problems getting my Passat serviced. There is 1 VW dealer within 30 or 40 miles. The MB dealership is an hour away. Beyond that, no dealer within 2 or 3 hours ofy location. Suppose I should have thought of that when I bought the car(s)! Lol! But thanks, again!
