SLK/R170 What is this Fancy Box?

07-24-2013, 02:29 PM

#1

SteveKarr

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2003 SLK320

What is this Fancy Box?

Hey,
As i was working in the back of the SLK320 I found this in the passenger side under the Tops's compressor and down by the spare tire.
So what is it?

Thanks,
Steve

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07-25-2013, 11:40 AM

#2

CarolinaBluetec

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2008 E320 Bluetec (until 11/14), 2001 SLK 320, 2004 Volvo V70, 1972 MGB, 2013 E350

PSE (Pneumatic System Equipment). Provides vacuum for locks. A lot of crap (alarm, interior lights, etc.) runs through there. Will give a lot of grief if it gets wet or corroded. Make sure your trunk drains are clear and seals are good.

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07-31-2013, 06:59 PM

#3

E-Klasse

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Join Date: Mar 2002

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W205 C300

Mercedes has a Service Note to flip this module over so that the PC board is on top to prevent the board from getting wet. If it gets wet, your alarm might go off by itself, light flash, locks and remote do not work, inside light stays on.

Looks like someone tapped or spliced in to yours for some reason.