So... does your CL hiss at you?
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2005 CL65 (current), 2001 CL600 (chopped)
So... does your CL hiss at you?
Mine is hissing while driving, and when I turn it off it keeps hissing for another 30sec-1min. Seems to be coming from the pressure relief valve / accumulator area. The hiss goes away when I pressure the lift up/down button, but comes right back after.
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From: Irvine
04 CL55, 05 E500S4, 15 BMW i3 REx
Mine hisses around the tandem pump area for around 30 seconds to one minute after the car is turned off. I wonder if it might be leak related, as I have a small leak on the pressure line coming off of the pump.
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2005 CL65 (current), 2001 CL600 (chopped)
It was either the pressure relief valve (+accumulator) or one of the high pressure hoses from pump to pressure relief valve. I replaced both at the same time. Hissing stopped.
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2005 CL65 (current), 2001 CL600 (chopped)
Pressure relief valve $500 (found a new one on ebay), hose $200 from dealer. My hissing was coming from passenger side--right at the pressure relief valve. If noise coming from driver side you may have pump issues, or maybe the accumulator in the front left. It's in front of the tire inside the fender well, big black round ball like thing next to the valve block.
When you press up/down button does the hiss go away? Does it come back after? What about when you turn steering wheel, does hiss go away temporarily?
When you press up/down button does the hiss go away? Does it come back after? What about when you turn steering wheel, does hiss go away temporarily?
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Joined: Sep 2004
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Definitely keep us updated. I just ordered a new Pulsation Damper, and I hope that fixes mine, but mine hisses SOOO loud for like 30 seconds after shut down, and also it rides like I'm on rocks, no more velvety ride.
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Joined: Nov 2011
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'04 E55 AMG
Mine doesn't seem THAT ba but I need to check it before it gets worse. I haven't had a chance to drive my car or a few weeks now. But I don't hear my hissing until I turn the engine off while it's running the car is fine. And it hisses for like 10-15 seconds. And the ride is still amazing even after aftermarket rims
