ACS Fluid
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Joined: Mar 2021
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From: Erie, CO
2016 GL550
ACS Fluid
I was wondering which is the correct ACS fluid to use and whether there is a good write-up how to change the fluid (besides just replace what is in the reservoir...).
Thanks!
Thanks!
Last edited by steh-fan; Sep 2, 2024 at 01:43 AM. Reason: Typo corrected
Thread Starter
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Joined: Mar 2021
Posts: 79
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From: Erie, CO
2016 GL550
Nailed it!
Where the circle is is for ACS fluid, and where the arrow is is where the blinker fluid gets in.
The blinkers will give a nice new shine when you add it there!
P.S. I corrected my typo! Sorry for that.
Last edited by steh-fan; Sep 2, 2024 at 01:45 AM. Reason: Typo corrected
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From: Erie, CO
2016 GL550
I just thought to replace the fluid as it probably has never been done.
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What do you mean you heard it's quite a bit?
Can you explain? "changing to a 550 that alphas ACS and the off-road package"
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From: Erie, CO
2016 GL550
I'm not really following you. So, you do not have active curve but you are thinking of changing the active curve fluid in a 550 you are looking at buying?
What do you mean you heard it's quite a bit?
Can you explain? "changing to a 550 that alphas ACS and the off-road package"
What do you mean you heard it's quite a bit?
Can you explain? "changing to a 550 that alphas ACS and the off-road package"
you're right, I'm getting rid of the 450 and will purchase a 550 that has ACS.
I read somewhere that it takes 11 quarts hydraulic fluid to fully replace.
But so far, I have not yet found the recommended service interval and a description of the procedure.
Thanks for the help!
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E55, GLS450, GL63, GLE350
Hi,
you're right, I'm getting rid of the 450 and will purchase a 550 that has ACS.
I read somewhere that it takes 11 quarts hydraulic fluid to fully replace.
But so far, I have not yet found the recommended service interval and a description of the procedure.
Thanks for the help!
you're right, I'm getting rid of the 450 and will purchase a 550 that has ACS.
I read somewhere that it takes 11 quarts hydraulic fluid to fully replace.
But so far, I have not yet found the recommended service interval and a description of the procedure.
Thanks for the help!
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Thread Starter
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Joined: Mar 2021
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From: Erie, CO
2016 GL550
That's because MB probably lists it as a lifetime fluid which means the max time they will warranty the car. It will spring a leak before or around 100k miles and the repair is not cheap. The system does work well but, if you want a more reliable vehicle, I advise against the option. Again, it does well at keeping the big girl relatively flat around curves, but you are in a huge SUV so there's that.
Any ideas where these leaks typically occur by chance?
Anyways, good I have an extended warranty (hopefully one that actually pays 😄
....
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The pump can fail and leak.
You have an extended warranty on your 450 or the 550 you are thinking about getting? Good luck finding a warranty company who will pay. If you have one that has paid a big claim, let everyone know. At one time, there were some really good ones out there, but they learned their lessons and no longer write MB.
You have an extended warranty on your 450 or the 550 you are thinking about getting? Good luck finding a warranty company who will pay. If you have one that has paid a big claim, let everyone know. At one time, there were some really good ones out there, but they learned their lessons and no longer write MB.
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Joined: Mar 2021
Posts: 79
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From: Erie, CO
2016 GL550
The pump can fail and leak.
You have an extended warranty on your 450 or the 550 you are thinking about getting? Good luck finding a warranty company who will pay. If you have one that has paid a big claim, let everyone know. At one time, there were some really good ones out there, but they learned their lessons and no longer write MB.
You have an extended warranty on your 450 or the 550 you are thinking about getting? Good luck finding a warranty company who will pay. If you have one that has paid a big claim, let everyone know. At one time, there were some really good ones out there, but they learned their lessons and no longer write MB.
They did pay out every single claim (and the last one included an engine harness replacement), but as you can imagine, I was not happy with the amount.
For the 550, I purchased a new one, but it's t early to tell whether they are good or not.
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I currently have one on the 450, but that warranty has a labor rate cap that I wasn't aware of.
They did pay out every single claim (and the last one included an engine harness replacement), but as you can imagine, I was not happy with the amount.
For the 550, I purchased a new one, but it's t early to tell whether they are good or not.
They did pay out every single claim (and the last one included an engine harness replacement), but as you can imagine, I was not happy with the amount.
For the 550, I purchased a new one, but it's t early to tell whether they are good or not.
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Thread Starter
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Joined: Mar 2021
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From: Erie, CO
2016 GL550
