SL/R230: Noise and Vibration (R231)
03-02-2018, 09:37 PM
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2014 SL550, 2017 Audi Q7, 2007 Porsche 997S
Noise and Vibration (R231)
I have a 2014 SL 550 with the ABC suspension package and a day ago the car has developed and annoying noise and vibration. I was told that since I have ABC I should post my thread here. The noise sounds like a low growl, like bearing going bad. The noise cycles on and off...you hear it for 20 seconds or so every few minutes. Can also feel transference of vibration in the steering wheel. Not an AC problem because it occurs when AC is off. Could it be a pump, servo, transmission or ???
03-04-2018, 10:03 AM
#2
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I have a 2014 SL 550 with the ABC suspension package and a day ago the car has developed and annoying noise and vibration. I was told that since I have ABC I should post my thread here. The noise sounds like a low growl, like bearing going bad. The noise cycles on and off...you hear it for 20 seconds or so every few minutes. Can also feel transference of vibration in the steering wheel. Not an AC problem because it occurs when AC is off. Could it be a pump, servo, transmission or ???
03-04-2018, 11:52 AM
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2014 SL550, 2017 Audi Q7, 2007 Porsche 997S
There doesn’t seem to be any correlation between application of the brakes and the occurrence of noise and vibration. The noise has occurred under acceleration, deceleration, light load, but is especially noticeable when entering a turn or when coming to a stop. It first started last week when we were having a very rainy day...thought at first it was the brakes drying themselves, but since the weather has cleared up, the problem has persisted.
08-11-2021, 08:24 PM
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SL550
I have a 2014 SL 550 with the ABC suspension package and a day ago the car has developed and annoying noise and vibration. I was told that since I have ABC I should post my thread here. The noise sounds like a low growl, like bearing going bad. The noise cycles on and off...you hear it for 20 seconds or so every few minutes. Can also feel transference of vibration in the steering wheel. Not an AC problem because it occurs when AC is off. Could it be a pump, servo, transmission or ???
08-13-2021, 09:21 AM
#6
almost certainly the ABC pulsation damper. You may notice the period cycling since the pump isn't always pumping at full pressure, ie controlled by the suction valve.
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08-13-2021, 10:08 AM
#8
08-13-2021, 01:25 PM
#9
Member
I had this exact issue (identical symptoms) in my 2013 SL63 and it was indeed a pulsation damper. Cost me $380 total, parts and labor, to have it replaced at an independent Mercedes specialist.
Since that time I have noticed the same noise many times, albeit certainly muted / softer. It seems to occur more when the car is hot.
Since that time I have noticed the same noise many times, albeit certainly muted / softer. It seems to occur more when the car is hot.
08-13-2021, 03:39 PM
#10
I had this exact issue (identical symptoms) in my 2013 SL63 and it was indeed a pulsation damper. Cost me $380 total, parts and labor, to have it replaced at an independent Mercedes specialist.
Since that time I have noticed the same noise many times, albeit certainly muted / softer. It seems to occur more when the car is hot.
Since that time I have noticed the same noise many times, albeit certainly muted / softer. It seems to occur more when the car is hot.
08-13-2021, 06:14 PM
#11
Member
The ABC fluid looks fine in terms of level and color.
