W221 Sloshing sound coming from the fuel tank
JOB-BLACK-RAT
MB Enthusiast
Welcome to the forum, and please forgive me...but.... you know its the fuel right?
kwakdonut
MB Enthusiast
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Fill the tank up - it won't slosh then! 
corned
MB Enthusiast
Not that I think it is the same problem (but you never know), I had a sloshing sound in an old Peugeot 406 estate.
My first thought was 'I don't remember hearing fuel sloshing around in the tank like that before'.
Following quite a lot of detective work, the sloshing noise seemed to be coming from right next to me. Acting on a hunch, and after thinking it through for a while, I drilled a small hole through the bottom of the sill, right at the back just in front of the rear wheel. About half a gallon of clean and clear rainwater gradually poured out.
Sloshing noise cured!
My first thought was 'I don't remember hearing fuel sloshing around in the tank like that before'.
Following quite a lot of detective work, the sloshing noise seemed to be coming from right next to me. Acting on a hunch, and after thinking it through for a while, I drilled a small hole through the bottom of the sill, right at the back just in front of the rear wheel. About half a gallon of clean and clear rainwater gradually poured out.
Sloshing noise cured!
thanks for the feedback so far - some useful and some, well... ;-)
after speaking to a friend who worked for mercedes they said that this is a known issue but Merc will not admit to it being so and did not do a recall - they just replaced the whole system for those who complained within the warrantee period ... the problem is mine is just out of warrantee and it is a job that costs over £2K! and they are only willing to contribute a small amount towards the cost of the job.
Yes it is def the fuel tank that is the issue.
Many thanks
after speaking to a friend who worked for mercedes they said that this is a known issue but Merc will not admit to it being so and did not do a recall - they just replaced the whole system for those who complained within the warrantee period ... the problem is mine is just out of warrantee and it is a job that costs over £2K! and they are only willing to contribute a small amount towards the cost of the job.
Yes it is def the fuel tank that is the issue.
Many thanks
Could it be the baffles that have failed/come loose? I'm sure this is a known problem on another model (R230 SL I think?). If so, i'm sure I've read that although difficult, they can be wound up and removed through the filler hole
- Joined
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I have not heard of this problem before and i know a lot of people with 221's.
Thanks again for all the help so far. This is the closest i can find to the problem i also have: £4,000 to Replace SL, R230 Fuel Tank!!! - Mercedes-Benz Owners' Forums
