Water Rolling Sound On B Class W246

[jason teo]

Can anyone advice me what is the problem with my B Class as I keep hearing water rolling sound when I drive off from start or while I am driving, strange thing is sometimes its not there. Thanks for your kind advice!

[steven77]

Years ago I had this funny problem too. I found out that it was due to water collecting at the bottom of the right door as the drain hole under the door was blocked with dirt, sediment etc.  Try looking under your doors for the drain hole/s and use a stick to poke through to see if its blocked. Might be the solution!

[White35]

On 3/2/2020 at 7:45 PM, snsd555 said:

Welcome! Which model did you get?

 

On 4/3/2019 at 8:57 PM, jason teo said:

Can anyone advice me what is the problem with my B Class as I keep hearing water rolling sound when I drive off from start or while I am driving, strange thing is sometimes its not there. Thanks for your kind advice!

Did u try off the aircon ? Mine will have this sound with aircon on but no sound when aircon is off. And also after engine gets hot the sound will disappear. I suspects the pulleys or idling bearing but mec cant guarantee...

 

[Daniel Chow]

Hi @White35, did you get the root cause of this problem? I've the same problem when AC is on. Went WS but mechanic said is the aircon compressor problem.. Thank you.

 

[kepiting1sg]

21 hours ago, Daniel Chow said:

Hi @White35, did you get the root cause of this problem? I've the same problem when AC is on. Went WS but mechanic said is the aircon compressor problem.. Thank you.

 

Can get the WS mechanic to explain to you how the aircon compressor creates the water rolling noise?

[King Davii]

On 4/3/2019 at 8:57 PM, jason teo said:

Can anyone advice me what is the problem with my B Class as I keep hearing water rolling sound when I drive off from start or while I am driving, strange thing is sometimes its not there. Thanks for your kind advice!

Hi JT,

did you resolved this water sound thingie? I recently heard such noise coming from the car while driving. 
appreciate your sharing & experience. 
thanks