How to remove PSE pump (central locking vacuum pump) - Mercedes SL (R230)
Hey guys, here is a Mercedes SL. Today we're going to see how to remove
the central locking vacuum pump. That's very quick and easy. So let's go!
Hi everybody, we're going to remove the central locking vacuum pump from this 2005 Mercedes SL.
This pump is also called PSE pump. PSE stands for Pneumatic System Equipment.
As a reminder, this pump operates the trunk opening, the trunk soft close,
the trunk remote release, the central locking and central unlocking, the door soft close,
unfortunately this car doesn't have this option, and the lumbar support.
The vacuum pump is located inside the trunk.
If your vacuum pump doesn't work and the 20 amp pump fuse in the car blows immediately
each time you change it, you will not be able to open the trunk normally.
As you can see, nothing happens when I operate the handle,
and the trunk remains inexorably closed. In this case, pull out the metal key of your key fob.
Insert the metal key into the trunk lock cylinder, turn it to the left,
and operate the handle. Then you can open the trunk.
Next step, pull out the carpet. Then, remove the spare wheel.
And remove the jack. Behind this foam is the hydraulic roof pump.
And behind this foam cube is the pneumatic vacuum pump that we need to remove.
First, remove this foam covering. Then remove these 4 nuts
that hold the hydraulic roof pump in place. Next, lift the hydraulic roof pump
and rotate it out of the way. The central locking vacuum pump
is located in this foam cube. Remove the foam covering.
This is our pump. Then lift and move the black box to the center of the trunk.
And that's it. You can attach the hydraulic roof pump
to free your hands as I do. Then, disconnect the 2 wiring plugs at the back.
This is the first one. And this is the second one.
There is a lug holding the plug, and so it's necessary to use a screwdriver
to remove this plug. Next, label each air pipe as I did.
That's very important because originally there is no marking on the pipes.
And if you mix the pipes by mistake, you will be lost.
Next, disconnect the 2 grey connectors. To do so, we just have to pry a plastic
tab located in each rectangular hole. There is no need to disconnect each pipe.
Only the grey connector. I will show you the plastic tab right after.
You need 2 screwdrivers. One to lift the grey connector,
and the other, the red one, to pry the plastic tab.
There we go. Here are the 2 plastic tabs.
And you've got to pry this one that way, and this one that way.
Then, you do the same for the second grey connector.
Be careful not to break it. It's fragile.
And voilà ! We have removed the central locking vacuum pump.
You can see the 4 tabs right there. And you've got to pry this one that way,
and this one that way. And here is a view of the grey connector.
Thanks guys for watching. And if the video was helpful,
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Thank you. Bye-bye.