CL-Class (W216) 2007-Present: CL 500, CL 600

'14 CL550 ABC Reservoir

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Old Jul 23, 2025 | 02:35 PM
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'14 CL550
'14 CL550 ABC Reservoir

Okay, I feel like a little bit of an idiot to have to ask this. I consider myself to be of above average Mechanical acuity. But I am not sure of the location of the ABC Fluid Reservoir on my car that I just got a month ago.....
I got a dreaded "malfunction" (little car with an UP arrow) notification this morning. Car only has 37,000 miles. So the first thing I am going to check is the fluid level. I bought some CHF 11S fluid and popped the hood. Couldn't immediately identify the reservoir. Did some searching on Google and YouTube. Everything shows the reservoir over on the Driver's (U.S. car) side. Like a black container with a couple of tops, one of them having a dipstick. But I don't have anything like that under the hood.
I DID find the circled reservoir over near the front passenger side of the nose of the car. It does have a dipstick and it is definitely low on fluid. The fluid in it appears to be a very light brown to green slick fluid (very much like hydraulic fluid). Before I possibly make a very expensive assumption, can someone please verify that this is, indeed, the ABC Fluid Reservoir. If not, where the heck is it?
Thanks for the help.

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Old Jul 24, 2025 | 07:38 AM
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2008 CL550, 2022 EQB 300, 2023 EQS 450 4Matic
Originally Posted by spadgitt
Okay, I feel like a little bit of an idiot to have to ask this. I consider myself to be of above average Mechanical acuity. But I am not sure of the location of the ABC Fluid Reservoir on my car that I just got a month ago.....
I got a dreaded "malfunction" (little car with an UP arrow) notification this morning. Car only has 37,000 miles. So the first thing I am going to check is the fluid level. I bought some CHF 11S fluid and popped the hood. Couldn't immediately identify the reservoir. Did some searching on Google and YouTube. Everything shows the reservoir over on the Driver's (U.S. car) side. Like a black container with a couple of tops, one of them having a dipstick. But I don't have anything like that under the hood.
I DID find the circled reservoir over near the front passenger side of the nose of the car. It does have a dipstick and it is definitely low on fluid. The fluid in it appears to be a very light brown to green slick fluid (very much like hydraulic fluid). Before I possibly make a very expensive assumption, can someone please verify that this is, indeed, the ABC Fluid Reservoir. If not, where the heck is it?
Thanks for the help.
Good you asked, because the circled item is not the ABC tank. It is on the driver side of the engine bay, near the front left corner. I'll attach a photo of the part from an Ebay listing so you can match it. It likely has a blue/green sticker on the top of it, unless time and heat have made it fall off.

https://www.ebay.com/itm/26675725563...Bk9SR5jPwcOHZg
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Old Jul 24, 2025 | 08:45 AM
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'14 CL550
Yes, thank you.
I posted this on the CL Owner's Facebook page and discovered that my car does not even have ABC...... It uses the Airmatic system.
ABC was an option on the CL550, but standard on the AMG models. At least the U.S. cars.
Lesson learned.....
So I still have an issue with the suspension that I need to get looked at. Even though the warning light is no longer showing (not sure if that is bad or good.....). I have an appointment for next week at my shop.
I appreciate the response.
BTW, this reservoir to which I was referring is the Power Steering. From the research I could find, it uses the same CHF 11S fluid. I will be topping it off later today once the car cools off.
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