SL-Class (R230) 2003 -- 2012: Discussion on the SL500, SL550, SL600

SL/R230: Trunk interior is missing something , help

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Old Jul 6, 2021 | 04:39 AM
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Trunk interior is missing something , help


Hi everyone, there is a piece missing inside of my trunk that is causing surface rust...

Can someone tell me what is missing? Much appreciated.

Note : This is an sl 500 2003

Thank you

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Old Jul 6, 2021 | 06:39 AM
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Originally Posted by Jason1234567

Hi everyone, there is a piece missing inside of my trunk that is causing surface rust...

Can someone tell me what is missing? Much appreciated.

Note : This is an sl 500 2003

Thank you
hi

There doesn't look like anything missing that I can see? The surface rust could just be years of moisture that the trunks tend to get, especially if not being driven with heating on and you live in a temperate climate. There is a central plastic drain plug under the foam square in your trunk and I STONGLY ADVISE TO GET RID OF IT !! if you then get any leaks in the trunk it will drain out. You will not get water ingress from underneath as there is a heat shield there.
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Old Jul 6, 2021 | 08:14 AM
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Originally Posted by A1EK
hi

There doesn't look like anything missing that I can see? The surface rust could just be years of moisture that the trunks tend to get, especially if not being driven with heating on and you live in a temperate climate. There is a central plastic drain plug under the foam square in your trunk and I STONGLY ADVISE TO GET RID OF IT !! if you then get any leaks in the trunk it will drain out. You will not get water ingress from underneath as there is a heat shield there.

Hi,

So this HOLE is normal? It goes through the bottom .... No cover ..?

Thank you



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Old Jul 6, 2021 | 08:44 AM
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2017 SL550 (R231), 2021 E350 (W213)
There should be a gray plastic box there that is the "pressure" tank for the PSE system. It helps even out the pressure and make door locks and such move quicker when the car has been sitting. I'm assuming your car is 2008 or before. I don't know about 2009+.

There is also normally a rubber grommet in the hole, which many people remove to help drain water out of the trunk. Looks like your rubber seal on the bottom of the rear window was, or is, leaking. This causes water to pool in the bottom of the trunk. PSE pump is very low, so tends to have trouble first.

Last edited by chad500sl; Jul 6, 2021 at 08:48 AM.
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Old Jul 6, 2021 | 09:51 AM
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Originally Posted by chad500sl
There should be a gray plastic box there that is the "pressure" tank for the PSE system. It helps even out the pressure and make door locks and such move quicker when the car has been sitting. I'm assuming your car is 2008 or before. I don't know about 2009+.

There is also normally a rubber grommet in the hole, which many people remove to help drain water out of the trunk. Looks like your rubber seal on the bottom of the rear window was, or is, leaking. This causes water to pool in the bottom of the trunk. PSE pump is very low, so tends to have trouble first.

Yes, you are right this is 2003.

Thank you on the information, will check on the rear window rubber seal...
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Old Jul 6, 2021 | 02:05 PM
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Don’t just check it, find extensive threads on curing the well known leakage problem. Very doable at nominal cost.
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Old Jul 6, 2021 | 03:24 PM
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That's the drain for the hydraulic fluid when your pump or rear cylinders start leaking.
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Old Jul 7, 2021 | 01:44 AM
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Originally Posted by Frederick NL
Don’t just check it, find extensive threads on curing the well known leakage problem. Very doable at nominal cost.

Thank you for the advise , appreciate it. I will do just that.
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Old Jul 7, 2021 | 05:11 PM
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Originally Posted by Frederick NL
Don’t just check it, find extensive threads on curing the well known leakage problem. Very doable at nominal cost.
here you go:
https://forums.mercedesclub.org.uk/i...update.150296/
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Old Jul 8, 2021 | 07:12 AM
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Originally Posted by Frederick NL

Thank you for the information...great help
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