SL-Class (R230) 2003 -- 2012: Discussion on the SL500, SL550, SL600

SL/R230: Fluid under the Car

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Apr 21, 2021 | 10:44 AM
  #1  
Das Geld 2's Avatar
Thread Starter
MBWorld Fanatic!
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2010
Posts: 4,359
Likes: 229
SL55, S500
Fluid under the Car

Hey Guys,

I noticed tiny spots in my driveway recently and assumed it was my pilot connector bushing on the tranny. But I wanted to check a little more with a camera and now see tons of oil.

Last night after a drive I pulled in the driveway and this was the size of the puddle that dripped freshly. It’s now about double the size. It’s by the door and past the wheel about a foot into the width of the car

In this video it actually looks like an abc hose is soaked? Is there one that’s in that spot? I don’t have my transmission cover on so you can see clearly




Could this actually be ABC fluid?

thank you
Reply
Old Apr 21, 2021 | 11:22 AM
  #2  
sivikvtec's Avatar
Senior Member
5 Year Member
Photogenic
Photoriffic
Liked
 
Joined: Nov 2019
Posts: 347
Likes: 86
2005 SL65 AMG
Yes, that is ABC fluid.

DO NOT DRIVE THE CAR until you figure out where the leak is coming from.


I assume your car is model year 2006 or older. You need to remove the front wheel well lining to get to the pulsation damper / pressure valve assembly located behind the fender.

Last edited by sivikvtec; Apr 21, 2021 at 11:26 AM.
Reply
Old Apr 21, 2021 | 12:38 PM
  #3  
Das Geld 2's Avatar
Thread Starter
MBWorld Fanatic!
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2010
Posts: 4,359
Likes: 229
SL55, S500
Jeez, I hope that’s not the case I’ve been driving for about a month like this and my mb shop is an hour away

This is a 2004- I’ve had a similar leak in 2018 from that fender area you suggest behind the lining, but nothing is coming from there and that just went away by itself which everyone says is impossible!

EDIT- Huge update

I just found that old thread and watched the video in there..holy crap you can see it leaking in the middle of the car in the same spot in 2018 that is leaking now- look at the 5 second and 12 second mark!! I’ve never noticed till now that the middle of the car also had that weep!!

https://mbworld.org/forums/sl55-amg-...going-out.html

5 and 12 second mark- middle of the car where the lining is hanging

quite stumped now..I haven’t had any spots under the car in 3 years, the last spots were from tranny gaskets and that went away when it was changed.

should I check my fluid level or something?
Reply
Old Apr 21, 2021 | 02:50 PM
  #4  
sivikvtec's Avatar
Senior Member
5 Year Member
Photogenic
Photoriffic
Liked
 
Joined: Nov 2019
Posts: 347
Likes: 86
2005 SL65 AMG
The only option is to find the leak, whether you do it yourself or take it to a shop. Personally, I would not dive that car more than a few miles from home with a leak like that. Depending on what’s leaking, you are potentially going to blow a hose and kill your pump.
Reply
Old Apr 21, 2021 | 11:04 PM
  #5  
ItalianJoe1's Avatar
MBWorld Fanatic!
 
Joined: May 2015
Posts: 4,037
Likes: 1,011
From: Miami, FL
2003 CL 600
Coming down the wheel well behind the fender liner is several of the ABC lines, pull that liner out and find the leak. It will be obvious, as you see, it's covered in fluid.

If you're in there, it's worth it to replace all the rubber lines in the area, as they are all the same age and if one is failing, the others are close behind usually. I've seen on more than one occasion where a leaking line was replaced, and during the rodeo/bleeding, another line fails due to the hard pressure spikes. The rubber has crimps holding the metal lines to it, and the rubber has just shrunk up and hardened with age, there's not much you can do but replace them at this point.
Reply
Old Apr 22, 2021 | 02:33 PM
  #6  
Das Geld 2's Avatar
Thread Starter
MBWorld Fanatic!
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2010
Posts: 4,359
Likes: 229
SL55, S500
Thanks Guys,

It's def ABC fluid- I just opened the reservoir and checked- same smell and texture.

(picture from mbworld)

I'm right here on the yellow line. I'm assuming I should be between that tab area right above it.
Reply
Old Apr 22, 2021 | 02:43 PM
  #7  
Das Geld 2's Avatar
Thread Starter
MBWorld Fanatic!
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2010
Posts: 4,359
Likes: 229
SL55, S500
What is this? I just looked under the car and see the same oil there. Drip trail down there




Thank You
Reply
Old Apr 30, 2021 | 12:23 PM
  #8  
Das Geld 2's Avatar
Thread Starter
MBWorld Fanatic!
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2010
Posts: 4,359
Likes: 229
SL55, S500

Looks like those block is leaking.

Ordering a new hose, part is $130 labor much more!
Reply
MB World Stories

The Best of Mercedes & AMG

story-0

6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

 Verdad Gallardo
story-1

Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

 Verdad Gallardo
story-2

Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

 Verdad Gallardo
story-3

8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

 Verdad Gallardo
story-4

Flawlessly Restored Mercedes 190E Evo II Heads to Auction

 Verdad Gallardo
story-5

Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

 Verdad Gallardo
story-6

Mercedes EQS Gets A Major Update: Everything You Need to Know

 Verdad Gallardo
story-7

5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

 Verdad Gallardo
story-8

Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

 Verdad Gallardo
story-9

10 Most Reliable Mercedes-Benz Models You Can Buy Used

 Verdad Gallardo
Old Apr 30, 2021 | 01:01 PM
  #9  
sivikvtec's Avatar
Senior Member
5 Year Member
Photogenic
Photoriffic
Liked
 
Joined: Nov 2019
Posts: 347
Likes: 86
2005 SL65 AMG
Have ABC lines been replaced on this car in the past?

The metal lines with the square blocks welded to them are connected directly to the front valve block.

When those lines are replaced, it of course is necessary to unscrew the two lines attached to each of the square blocks. The first thing I would do is have all four of the lines unscrewed from the blocks and then retightened and property torqued.

The problem you might be having could be caused by the threaded fittings that hold those lines to the blocks not being tight enough or they were cross threaded by a careless mechanic when the lines were replaced.

I wouldn’t replace any parts before checking this.

Last edited by sivikvtec; Apr 30, 2021 at 01:04 PM.
Reply
Old Apr 30, 2021 | 01:43 PM
  #10  
Das Geld 2's Avatar
Thread Starter
MBWorld Fanatic!
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2010
Posts: 4,359
Likes: 229
SL55, S500
Originally Posted by sivikvtec
Have ABC lines been replaced on this car in the past?

The metal lines with the square blocks welded to them are connected directly to the front valve block.

When those lines are replaced, it of course is necessary to unscrew the two lines attached to each of the square blocks. The first thing I would do is have all four of the lines unscrewed from the blocks and then retightened and property torqued.

The problem you might be having could be caused by the threaded fittings that hold those lines to the blocks not being tight enough or they were cross threaded by a careless mechanic when the lines were replaced.

I wouldn’t replace any parts before checking this.
Hi Sivi,

Thanks for the input. I literally held off for now to see my options. The mechanic at the shop actually suggested that the fitting might be loose and he tried to tighten it but it was tight to no avail.. we started the car on the lift and it had a very slow drip. He said I can still drive it but watch the fluid level. Good it’s not a hose. In the past perhaps before my ownership. But the leak is new so I wouldn't think it's something recently.

Do you think that full throttle sealer can fix this?

I was quoted 6 hours of labor because he said the hose goes all the way to the front of the engine.

Last edited by Das Geld 2; Apr 30, 2021 at 01:58 PM.
Reply
Old Apr 30, 2021 | 02:19 PM
  #11  
Das Geld 2's Avatar
Thread Starter
MBWorld Fanatic!
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2010
Posts: 4,359
Likes: 229
SL55, S500
I'm guessing the part is either 320/330

https://www.mercedesbenz.parts/oem-p...bC12OC1nYXM%3D

https://www.mercedesbenz.parts/oem-p...bC12OC1nYXM%3D



Last edited by Das Geld 2; Apr 30, 2021 at 02:24 PM.
Reply
Old Apr 30, 2021 | 02:33 PM
  #12  
MikeJ65's Avatar
MBWorld Fanatic!
5 Year Member
Photogenic
 
Joined: Aug 2020
Posts: 1,325
Likes: 365
From: Gretna, NE
'03 SL55 Black, '03 SL500's Aegean, Mars Red, Tazanite, Alabaster, '11 S550 Flint Gray
Are you sure it is not a leak in the pulsation damper hose that is running down to this connection? It is unusual for a leak to start on the metal components, once the fittings are tightened and leak free they usually stay they way. My bet would be a leak where the steel line crimps to the hose on the high pressure line from the pulsation damper. You can pull the fender lining and get a much better look.
Reply
Old Apr 30, 2021 | 04:22 PM
  #13  
Das Geld 2's Avatar
Thread Starter
MBWorld Fanatic!
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2010
Posts: 4,359
Likes: 229
SL55, S500
Originally Posted by MikeJ65
Are you sure it is not a leak in the pulsation damper hose that is running down to this connection? It is unusual for a leak to start on the metal components, once the fittings are tightened and leak free they usually stay they way. My bet would be a leak where the steel line crimps to the hose on the high pressure line from the pulsation damper. You can pull the fender lining and get a much better look.
I know right! I'm scratching my head. Do you mean hose 340(red)?

we started the car on the lift and it was clearly coming right out of the nut(yellow circle)


Reply
Old Apr 30, 2021 | 05:58 PM
  #14  
sivikvtec's Avatar
Senior Member
5 Year Member
Photogenic
Photoriffic
Liked
 
Joined: Nov 2019
Posts: 347
Likes: 86
2005 SL65 AMG
Did your mechanic unscrew that line and check the threads?
Reply
Old Apr 30, 2021 | 06:39 PM
  #15  
Das Geld 2's Avatar
Thread Starter
MBWorld Fanatic!
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2010
Posts: 4,359
Likes: 229
SL55, S500
Originally Posted by sivikvtec
Did your mechanic unscrew that line and check the threads?
negative, just tried to tighten it and it wouldn't move.
Reply
Old Apr 30, 2021 | 06:51 PM
  #16  
sivikvtec's Avatar
Senior Member
5 Year Member
Photogenic
Photoriffic
Liked
 
Joined: Nov 2019
Posts: 347
Likes: 86
2005 SL65 AMG
Originally Posted by Das Geld 2
negative, just tried to tighten it and it wouldn't move.
Have them bust it loose and retighten, it might have been cross threaded. It will take all of 5 minutes.
Reply
Old Apr 30, 2021 | 09:58 PM
  #17  
Das Geld 2's Avatar
Thread Starter
MBWorld Fanatic!
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2010
Posts: 4,359
Likes: 229
SL55, S500
Originally Posted by sivikvtec
Have them bust it loose and retighten, it might have been cross threaded. It will take all of 5 minutes.
wish they tried that when I was there! Place is an hour drive from my house..There’s no reason it should be leaking in that area right? Is that area pressurized? Could I do it myself? Don’t think there are any seals in there or rings like he mentioned. I just took the car and drove back home washed it and put it under a cover -,-



Last edited by Das Geld 2; Apr 30, 2021 at 10:02 PM.
Reply
Old Apr 30, 2021 | 10:50 PM
  #18  
sivikvtec's Avatar
Senior Member
5 Year Member
Photogenic
Photoriffic
Liked
 
Joined: Nov 2019
Posts: 347
Likes: 86
2005 SL65 AMG
That particular line/fitting is under high pressure when the engine is running.

I’m concerned your mechanic didn’t have enough common sense to try this while you were there. How much further away is a larger city that might have better shop?
Reply
Old May 1, 2021 | 09:51 AM
  #19  
Das Geld 2's Avatar
Thread Starter
MBWorld Fanatic!
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2010
Posts: 4,359
Likes: 229
SL55, S500
Originally Posted by sivikvtec
That particular line/fitting is under high pressure when the engine is running.

I’m concerned your mechanic didn’t have enough common sense to try this while you were there. How much further away is a larger city that might have better shop?
Dohh, I took it to that shop only because it was an exotic performance shop that works on only Italians, exotics and euros. The irony. I guess I could take it back to my euro shop that I usually go for all my repairs. It’s still an hour drive. I guess I will report back when I take the car out again and see what they say. Will update when I do. Ty!
Reply
Old May 15, 2021 | 06:13 PM
  #20  
Das Geld 2's Avatar
Thread Starter
MBWorld Fanatic!
15 Year Member
Liked
Loved
Community Favorite
 
Joined: Jul 2010
Posts: 4,359
Likes: 229
SL55, S500
Well good news..The leak is fixed!!

I took it to a guy here locally and he was able to disconnect and reconnect it and we added a bit of teflon as another extra measure- leak no more!!

It was super strange and he has never has seen that either..literally coming out of the bolt.

In the process we inspected other lines on the car and found some seepage on the hose near the pulsation dampener behind the front wheel well. Will order the part and replace.

Big thanks to everyone for their help

Last edited by Das Geld 2; May 15, 2021 at 06:15 PM.
Reply

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


You have already rated this thread Rating: Thread Rating: 0 votes,  average.


All times are GMT -4. The time now is 02:55 AM.

story-0
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

Slideshow: Not every Mercedes design becomes timeless, some feel stuck in the era they came from.

By Verdad Gallardo | 2026-05-12 18:09:07


VIEW MORE
story-1
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

Slideshow: Yes, Mercedes built manual cars, and some of them are far more interesting than you'd expect.

By Verdad Gallardo | 2026-05-02 12:36:58


VIEW MORE
story-2
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.

By Verdad Gallardo | 2026-04-29 11:19:28


VIEW MORE
story-3
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

Slideshow: Before curves took over, Mercedes mastered the art of the straight line, and some of those shapes still look right today.

By Verdad Gallardo | 2026-04-25 12:05:49


VIEW MORE
story-4
Flawlessly Restored Mercedes 190E Evo II Heads to Auction

Slideshow: The 190E Evolution II shows how a homologation necessity became a six-figure collector icon.

By Verdad Gallardo | 2026-04-22 17:53:47


VIEW MORE
story-5
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

Slideshow: Mercedes is turning one of its core nameplates electric, and the details show just how serious this shift is.

By Verdad Gallardo | 2026-04-21 13:58:06


VIEW MORE
story-6
Mercedes EQS Gets A Major Update: Everything You Need to Know

Slideshow: Faster charging, longer range, and a controversial steer-by-wire system define the latest evolution of Mercedes-Benz EQS.

By Verdad Gallardo | 2026-04-15 10:35:34


VIEW MORE
story-7
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

Slideshow: These overlooked Mercedes-Benz models never got the spotlight, but they quietly delivered more than most remember.

By Verdad Gallardo | 2026-04-13 19:35:45


VIEW MORE
story-8
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

Slideshow: A well-used 1991 Mercedes-Benz 300D with more than one million miles is now looking for a new owner, and it still appears ready for more.

By Verdad Gallardo | 2026-04-10 10:05:15


VIEW MORE
story-9
10 Most Reliable Mercedes-Benz Models You Can Buy Used

Slideshow: From bulletproof sedans to surprisingly tough SUVs, these Mercedes models proved that the three-pointed star can go the distance.

By Verdad Gallardo | 2026-04-08 09:55:49


VIEW MORE