2013 S400 brake issue - Mercedes-Benz Forum
 
LinkBack Thread Tools Display Modes
post #1 of 9 (permalink) Old 06-01-2019, 06:46 AM Thread Starter
BenzWorld Newbie
 
Date registered: Jun 2019
Vehicle: 2013 S400
Location: Virginia
Posts: 4
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
(Thread Starter)
2013 S400 brake issue

Hi, new to this forum.

I have a 2013 S400 with 41K on it. When it hot outside (90 degrees for example), in traffic, and at a stop light (for example) and using the brake "hold" feature, the brake takes a few seconds to release upon pressing the gas pedal. The car will not move for a few seconds regardless of how hard I press the gas pedal.

I have also noticed that when I'm in traffic -- but moving along 45-50 mph -- and then have to hit the brakes, the brakes continue to stay engaged for a second or two after I take my foot off the pedal. Clearly not a good situation. I have had it looked at and was told a new brake booster was needed ($4,000 Dealer). I found that to be odd since when it is cool out this brake problem does not happen. Having replaced a brake booster on a much older Mercedes in the past, I found this explanation hard to understand since the brakes function as they should when it is cool out and not in heavy city traffic.

Any thoughts on where to look or what could be the problem? I was told that because my rain drains on my front windshield were clogged, that water got to the brake booster and rusted it. I found that explanation to be problematic too.
Glenn LeMunyon is offline  
Sponsored Links
Advertisement
 
post #2 of 9 (permalink) Old 06-01-2019, 07:33 AM
Outstanding Contributor
 
konigstiger's Avatar
 
Date registered: Jan 2007
Vehicle: '71 Pinto
Location: North Scottsdale, AZ
Posts: 4,002
Mentioned: 13 Post(s)
Quoted: 377 Post(s)
Did dealer find/provide fault code(s) try another dealer or independent for second opinion, suggest they check calibers.
dlafever likes this.
konigstiger is offline  
post #3 of 9 (permalink) Old 06-01-2019, 05:13 PM
BenzWorld Junior Member
 
Shadly1's Avatar
 
Date registered: May 2019
Vehicle: 2007 S550
Location: Arizona
Posts: 19
Mentioned: 0 Post(s)
Quoted: 6 Post(s)
I just happen to have RockAuto open in front of me. They don't have a brake booster but they do offer a rebuild service for $75. If that is the issue, it's not going to be $4000(!?!) for a new booster. That's crazy talk!

https://www.rockauto.com/en/catalog/...e+booster,1884

Upside- Cheap
Downside- Down for 7-10 business days plus shipping time

You could also find a used part on eBay. I'd imagine a failed brake booster is a rare thing after 6 years. If you want to overkill this situation(of course you do! LOL), you can have a used unit rebuilt prior to install.
Shadly1 is offline  
Sponsored Links
Advertisement
 
post #4 of 9 (permalink) Old 06-03-2019, 06:12 AM Thread Starter
BenzWorld Newbie
 
Date registered: Jun 2019
Vehicle: 2013 S400
Location: Virginia
Posts: 4
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
(Thread Starter)
Thank you. Great to know. Taking the car in for a second opinion on Wednesday. They usually do not work on hybrids -- but are making an exception because it is a brake issue.
Glenn LeMunyon is offline  
post #5 of 9 (permalink) Old 06-03-2019, 06:13 AM Thread Starter
BenzWorld Newbie
 
Date registered: Jun 2019
Vehicle: 2013 S400
Location: Virginia
Posts: 4
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
(Thread Starter)
No fault codes were read. Taking it in for a second opinion on Wednesday to an independent MB shop. Hopefully get a better result. Thank you.
Glenn LeMunyon is offline  
post #6 of 9 (permalink) Old 06-05-2019, 11:02 AM Thread Starter
BenzWorld Newbie
 
Date registered: Jun 2019
Vehicle: 2013 S400
Location: Virginia
Posts: 4
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
(Thread Starter)
Well, after a second opinion, it seems that the first assessment was correct. The booster somehow got water in it -- likely from the associated pump. Yes, I could find a booster on ebay or some other website ($1600 and up) -- but the problem then becomes -- who will put it on the car? Because it is a hybrid, I'm finding that only the dealer will work on it.

Indeed, the booster is unique -- the booster retails for $2120, I may need the associated electric pump ($755), and potentially a bracket ($130). Then I have to have it all installed.

Not your father's brake booster -- that for sure.
Glenn LeMunyon is offline  
post #7 of 9 (permalink) Old 06-05-2019, 11:19 AM
BenzWorld Junior Member
 
Shadly1's Avatar
 
Date registered: May 2019
Vehicle: 2007 S550
Location: Arizona
Posts: 19
Mentioned: 0 Post(s)
Quoted: 6 Post(s)
Talk to an independent for install if you don't want to do it yourself. Hybrids should not scare them. If they do, find a new mechanic. Your booster is between $200-$600 on eBay for a working used complete unit.

https://www.ebay.com/itm/10-13-Merce...ty!85396!US!-1
Shadly1 is offline  
post #8 of 9 (permalink) Old 06-24-2019, 02:34 PM
Outstanding Contributor
 
konigstiger's Avatar
 
Date registered: Jan 2007
Vehicle: '71 Pinto
Location: North Scottsdale, AZ
Posts: 4,002
Mentioned: 13 Post(s)
Quoted: 377 Post(s)
Part # 2214303530 see attachments.
Attached Files
File Type: pdf hybrid brake booster.pdf (379.8 KB, 7 views)
File Type: pdf install master brake cylinder.pdf (246.0 KB, 7 views)
File Type: pdf install brake fluid reservoir.pdf (302.2 KB, 6 views)
File Type: pdf install cover below instrument panel (left).pdf (287.8 KB, 9 views)
File Type: pdf XENTRY Portal - Print part query.pdf (175.8 KB, 7 views)
konigstiger is offline  
post #9 of 9 (permalink) Old 07-04-2019, 04:55 PM
BenzWorld Member
 
Date registered: Sep 2006
Vehicle: '07 S600, '00 E320 Wagon, other
Location: Tampa Bay, FL
Posts: 196
Mentioned: 1 Post(s)
Quoted: 21 Post(s)
By reading S400 stories I see similarities to S600 - both rare and expensive to maintain, so 3 choices for the owners:
- learn to do the work yourself (the best option)
- have a big checkbook for the dealer (who often does not know what he is doing anyway, since the cars are so rare, also independent mechanics know little about them and either don't want to take them or can mess them up)
- sell

S600 has all the features, all the luxury, and is a blast to drive! S400 saves you a few $$ on fuel. S600 parts are rather cheap and can be bought and installed used, S400 not so.

Good luck whichever option you choose.
George993 is offline  
Sponsored Links
Advertisement
 
Reply

  Mercedes-Benz Forum > Mercedes-Benz Sedan Forums > W221 S-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