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Water Bubbling/Boiling Sound

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Old Nov 2, 2017 | 06:24 AM
  #1  
gannan's Avatar
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C200
Water Bubbling/Boiling Sound

Hi all,

i got my W205 last year end, after few months of driving, i realised that my car started to have "water bubbling" sound from the air con, the sound happens quite often i cant really know when it will have:
1. the car is stop, ignition is ON.
2. after a fast moving of the car
3. sounds louder when the car stop at a "slope" road

I've sent my car for checking few months back regarding this issue, as what the technician mentioned that there's air trapped inside the system and causing the sound, after they "empty and refill" something, (sorry im not good in technical), couldnt hear the sound anymore, but it only last for a week, it came back again. i just sent my car for checking again, see whether can solve the problem.

I've seen MB members are having the similar issue, but the thread was in 3 years back, and there's no more update. If anyone is having the same issue, please update and share.
Hope anyone here can share with me. Thank you.
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Old Nov 8, 2017 | 09:24 PM
  #2  
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Hi guys,

No one is having this issue? Oh my gosh im the unlucky one.
Looking forward for your advises.
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Old Nov 12, 2017 | 03:53 PM
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2016 C300 4MATIC
I have experienced that same sound, and it usually comes from the dash in front of the passenger seat. I only hear it if I have the heat on, which is probably why I've just started to notice it.
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Old Nov 16, 2017 | 09:04 PM
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Hi drzzzombie,

The problem solved? Mine havent.
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