W169:A150 water in rear spare wheel section

[anyweb]

help ! I was cleaning the inside of the partners A150 when i noticed mold in the spare wheel bit under the boot inner lid, basically when you press the carpet it wobbles around so clearly it feels like 1 or 2 inch's of water in there, the water is currently under the carpet...

note: the front mats and rear seat mats feel dry...

i guess this is a prelude to an electrical disaster so how can i fix it ? is it a known issue, must i remove the rear bumper to resolve,
if anyone has any instructions, tips, help or advice for solving this i'd appreciate it, thanks in advance..

cheers
niall

 

[Cole@MBS]

Rear bumper has to come off, (very easy) there your find a grill on each corner which will be loose on the body, remove clean and refit using some sealer to the body, very very common!!!

 

[anyweb]

thanks Cole,
you say use 'some sealer' to the body, what type of sealer would i use ? I've now taken out the inner lining and emptied the water, i pulled one of the plugs out and all the water drained away, then i cleaned it up,

would it be a workaround to just leave one of the 5 plugs out and let it drain naturally or is that asking for trouble ?
i removed the plug in the top right of the photo and all the water drained out.

 

[ZZZZ]

I've recently done exactly, what Cole advised above - there's no way around it, it needs to be done - I couldn't even think of leaving it as is, with a couple of extra holes, to let the water drain: I have a power sound option, with a factory subwoofer in my spare wheel.

 

[anyweb]

ok but until i remove the bumper (probably another few weeks) it's ok to leave one plug out ? also, what should i seal it with when i do do the job, would something like bathroom silicon be good enough ?

 

[Blobcat]

I’d use CT1 as a sealer

 

[anyweb]

@Blobcat what is CT1 ? I live in Sweden and i've never heard of it

 

[Blobcat]

@Blobcat what is CT1 ? I live in Sweden and i've never heard of it

CT-1

 

[umblecumbuz]

Or go to a chandlers and buy a scupper valve. Fit it at the lowest point and your wheel well will always stay dry!
One-way flap valve, self-closing.

 

[EmilysDad]

....
One-way flap valve, self-closing.

My R Class had one of those in the wheel well