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

SL/R230: ABC

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Old Jun 29, 2025 | 11:07 PM
  #26  
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'03 SL55 Black, '03 SL500's Aegean, Mars Red, Tazanite, Alabaster, '11 S550 Flint Gray
This is the classic indication of a blown accumulator. The fluid demand is high when you hit the bumps and the resulting pressure drop throws a low pressure code. The pressure quickly returns to normal, so the read warning clears.
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Old Jul 5, 2025 | 11:54 AM
  #27  
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Just a quick follow-up. Is it safe for me to drive the car? At best, twice a week, but more like once a week on Sunday until I take the car in around the week of the 14th?
Thank you all for your help on this matter. I truly appreciate all of your input and knowledge.
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Old Jul 7, 2025 | 02:08 AM
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Yes. You will not enjoy the magic carpet ride that new accumulators offer, but there is no extra strain on the system. Avoid big dips and bumps - you'll get a red warning briefly but I don't think you'll damage anything - the system is just reporting a momentary drop in pressure.
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Old Jul 7, 2025 | 12:17 PM
  #29  
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It's kinda tricky to avoid the big dips when I'm cruising on the FWY at high speeds. It scares the **** out of me to think that if I hit one at the speeds I'm traveling, the car could become uncontrollable and throw me into a spin. I'm not worried about myself, I'm worried about the other drivers. I guess I'll need to take my foot off the gas pedal until I can get this issue resolved. Thank you.
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Old Jul 23, 2025 | 01:42 PM
  #30  
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****Update. I just got my car back after replacing the Pressure Accumulator at a price point of $1,100.00. Not too bad, considering I was looking at a possible total of over 2k. Car runs GREAT now, that is for the time being, right? No more growling noise ending with a bang at the back of the car every time I start her. With that in mind, I think this might be a good time to find a buyer for the vehicle. I don't know how far I'll get, but considering that the next issue will most likely land me in the poor house, it's a realistic option I need to look into.

Again, I thank you all for your help and insight.
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Old Jul 23, 2025 | 09:41 PM
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SL55, S500
So you just changed the rear accumulator or both?
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Old Jul 24, 2025 | 03:57 PM
  #32  
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Just the rear.
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