W246 Transmission Fluid Change ? - Page 2 - Mercedes-Benz Forum
Reply
 
LinkBack Thread Tools Display Modes
post #11 of 15 (permalink) Old 10-03-2014, 03:25 PM
BenzWorld Member
 
Umbrianissimo's Avatar
 
Date registered: Aug 2014
Vehicle: 2017 B250 4Matic
Location: Vancouver BC Canada
Posts: 88
Mentioned: 0 Post(s)
Quoted: 15 Post(s)
Quote:
Originally Posted by kplesz View Post
I just finished arranging my second B service and was told they would be servicing my transmission at the same time. I hope that's what they do.
I'm sure they have had more than an earful from CVT owners and so the transmission fluid change won't be skipped. When I was grilling mechanics and dealers about the B 200, everybody emphasized the need for regular CVT fluid changes; clearly there is a problem, or at least there have been enough CVT failures to make that service essential.

The 250 has a conventional automatic and would not expect it to be a problem at all. I don't know much about the inner workings of any type of transmission, but I think they do a lot of work over the life of vehicle; I don't see why they shouldn't get new, clean fluid to help them do their job.

BTW, what mileage are you at that they are using for a trans. fluid change?
Umbrianissimo is offline  
Sponsored Links
Advertisement
 
post #12 of 15 (permalink) Old 10-03-2014, 09:08 PM
BenzWorld Elite
 
Mike Tee's Avatar
 
Date registered: Aug 2007
Vehicle: see signature
Location: Vancouver Island, Canada
Posts: 4,017
Mentioned: 3 Post(s)
Quoted: 67 Post(s)
Send a message via Yahoo to Mike Tee
The 250 gearbox is a double clutch automated sequential manual (pre-selector type) and should be a lot better than the CVT was.
Mike Tee is offline  
post #13 of 15 (permalink) Old 10-04-2014, 06:18 AM
BenzWorld Member
 
Date registered: Feb 2013
Vehicle: 2013 B250
Location: Calgary AB Canada
Posts: 99
Mentioned: 0 Post(s)
Quoted: 23 Post(s)
Quote:
Originally Posted by Umbrianissimo View Post
I'm sure they have had more than an earful from CVT owners and so the transmission fluid change won't be skipped. When I was grilling mechanics and dealers about the B 200, everybody emphasized the need for regular CVT fluid changes; clearly there is a problem, or at least there have been enough CVT failures to make that service essential.

The 250 has a conventional automatic and would not expect it to be a problem at all. I don't know much about the inner workings of any type of transmission, but I think they do a lot of work over the life of vehicle; I don't see why they shouldn't get new, clean fluid to help them do their job.

BTW, what mileage are you at that they are using for a trans. fluid change?
I'm at 65,000km but the 2nd B service would typically be due at 80,000km. Mine is coming due sooner probably because the car's computer is calculating that I need it sooner.

[update] The car went in today and they're doing the transmission service. I was given a choice and I said to do it. They said I could wait until 120,000km but I'd rather it get done sooner as per what I've been hearing they do in Europe.

Last edited by kplesz; 10-23-2014 at 01:11 PM.
kplesz is offline  
Sponsored Links
Advertisement
 
post #14 of 15 (permalink) Old 01-17-2019, 04:54 PM
BenzWorld Junior Member
 
Date registered: Jan 2019
Posts: 10
Mentioned: 1 Post(s)
Quoted: 3 Post(s)
Hello everyone,

I am new to the forum and a new B250 owner!

I had a 1997 VW Jetta that was new from the dealership when i was younger. The Jetta also had a transmission that was sealed for life as per the dealership and engineering. The dealer told me that it never needed to be changed as the fluid was a full synthetic.

Post warranty i went to a Mr Lube location for a quick oil change, and was pressured in to a transmission fluid change. I explained what the dealer told me, as well as showing them the manual. I was told that they have never ever heard of that. I was then told if i didn't change my transmission fluid i faced a catastrophic failure.

Being young and impressionable, i followed their advice. I had the fluid changed.

Two days later on my way back from Whistler Mountain to Vancouver at 02:00 am, my transmission went "BANG!" and the rpm gauge dropped to zero. The accelerator pedal did nothing.

The car coasted to a stop. I got out in pure darkness on the old sea to sky highway to see a trail of transmission fluid behind me. I was stuck for 2 hours waiting for a tow truck.

A good friend recommended a close friend of his who is a transmission specialist and he found a transmission for me and installed it for a reasonable price.

Now, the lesson learned was that the reason it is sealed for life is that it was engineered that way. It has magnets built in to collect any chipped gear teeth and hold them in place... The flushing/change dislodged those pieces and they got caught.

Unless there is a TSB or the manual calls for a change... I would be leery of changing the fluid as it may lead to unknown issues.

Just my $0.02, and best of luck

However, if Mercedes Europe says a change is necessary, they superceed North America!
BlueB250 is offline  
post #15 of 15 (permalink) Old 01-17-2019, 06:31 PM
BenzWorld Member
 
Umbrianissimo's Avatar
 
Date registered: Aug 2014
Vehicle: 2017 B250 4Matic
Location: Vancouver BC Canada
Posts: 88
Mentioned: 0 Post(s)
Quoted: 15 Post(s)
Hello BlueB250, and welcome!

Thanks for the story. Being pressured into unnecessary, or potentially damaging work, is a real risk. But first, I see in my post, #11, I state that the B250 has a conventional auto trans. That is not correct, as @Mike Tee noted.

As I understand it, the 7 speed dual-clutch in the B250's is an oil bath/ wet clutch system and the fluid does have a replacement interval; possibly at 100,000 kms. Which is fine by me. Definitely a dealer operation, I'd suggest.
Umbrianissimo is offline  
Sponsored Links
Advertisement
 
Reply

  Mercedes-Benz Forum > Mercedes-Benz Sedan Forums > W246 B-Class

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Mercedes-Benz Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 

Title goes here

close
video goes here
description goes here. Read Full Story
For the best viewing experience please update your browser to Google Chrome