CL500 - water pooling

[Sand-Dancer]

Hi guys. Wasn't sure this was the right section to post this, but I suppose pooling water leads to corroded bodywork, so here it is. Mods, please move the thread if required.

I washed the CL500 last night, and this morning when I was cleaning the interior, I opened the boot and saw these pools of water in the boot shuts....





Could it be blocked drain holes?

The boot on the offside (drivers side) has sat slightly proud at the top end where it meets the rear screen. Thought it might have been something to do with that, but the pooling seems to be equal on both sides.

Cheers for any pointers.

 

[renault12ts]

Blocked drains for sure...what else could it be?

 

[lexman8]

The boot on the offside (drivers side) has sat slightly proud at the top end where it meets the rear screen.

My boot sits slightly proud there too. I'm fairly sure water doesn't get in there though.

As for the pooling, I had to clear gunge (bits of dead leaves, etc) from the area under the support strut so that water ran away. There's no obvious drain as such, just clear out all around there and poke around any holes/slots/crevices/etc.

 

[C43AMG]

The slight raise on the O/S boot corner is due to the vacuum pump which operates the remote boot locking, after time it looses it vacuum and doesn't pull the boot closed

It is situated behind the boot lining by the battery and as it is a CL it costs around £500.00 of course. Part number A 215 800 01 48 if you ever need one !!

 

[Dash1]

The slight raise on the O/S boot corner is due to the vacuum pump which operates the remote boot locking, after time it looses it vacuum and doesn't pull the boot closed

It is situated behind the boot lining by the battery and as it is a CL it costs around £500.00 of course. Part number A 215 800 01 48 if you ever need one !!

Hello C43AMG,

With the greatest respect Peter, the CL does not have a vacuum pump on the o/side, neither is it controlled by any principles of vacuum, However, it does have an hydraulic pump which is located under the battery tray and the hydraulic pump controls the hydraulic ram which is attached to the boot hinge, it’s the hydraulic ram that finally pulls the boot lid into its final closed position. The hydraulic motor is controlled solely by two relays, which are operated by the PSE control module, one for opening the boot lid and one for closing.

Have a read through this thread from rk100 when he had a boot lid opening issue, it may be of interest to you seeing as you already own a CL.

Link: - http://www.mbclub.co.uk/forums/parts-maintenance-servicing/182974-boot-opening.html


To the OP,

Remove the plastic boot channelling trims (3 push-in clips on either side, two in the channels and one adjacent to the rear lamp) and clean out the apertures, they do get blocked over time. The plastic outer clips have a centre plastic pin that holds them in place. Go to a Mercedes Benz parts department and buy some new ones before you start the job, it’s really a very simple and easy job to do and I can assure you that this will solve the problem.

Best Regards,

[FONT=&quot]Dash1[/FONT]

 

[C43AMG]

Hello C43AMG,

With the greatest respect Peter, the CL does not have a vacuum pump on the o/side, neither is it controlled by any principles of vacuum, However, it does have an hydraulic pump which is located under the battery tray and the hydraulic pump controls the hydraulic ram which is attached to the boot hinge, it’s the hydraulic ram that finally pulls the boot lid into its final closed position. The hydraulic motor is controlled solely by two relays, which are operated by the PSE control module, one for opening the boot lid and one for closing.

Have a read through this thread from rk100 when he had a boot lid opening issue, it may be of interest to you seeing as you already own a CL.

Link: - http://www.mbclub.co.uk/forums/parts-maintenance-servicing/182974-boot-opening.html


To the OP,

Remove the plastic boot channelling trims (3 push-in clips on either side, two in the channels and one adjacent to the rear lamp) and clean out the apertures, they do get blocked over time. The plastic outer clips have a centre plastic pin that holds them in place. Go to a Mercedes Benz parts department and buy some new ones before you start the job, it’s really a very simple and easy job to do and I can assure you that this will solve the problem.

Best Regards,

[FONT=&quot]Dash1[/FONT]

Dash many thanks for your reply and your explanation. I stand corrected

I had the same problem with the boot not aligning correctly so I did go into the workings of said pump.

I was quoting from what MB Brooklands Parts dept EPC photo copied picture and details of said pump (which includes a very nice picture of said W215 and where pump is situated. Which also includes my Vin No

It is headed Group :" 80 Vacuum System

Subgroup : 075 - Remote Trunk locking"

Part No : A 2315 800 01 48

 

[Dash1]

Dash many thanks for your reply and your explanation. I stand corrected

I had the same problem with the boot not aligning correctly so I did go into the workings of said pump.

I was quoting from what MB Brooklands Parts dept EPC photo copied picture and details of said pump (which includes a very nice picture of said W215 and where pump is situated. Which also includes my Vin No

It is headed Group :" 80 Vacuum System

Subgroup : 075 - Remote Trunk locking"

Part No : A 2315 800 01 48

Hello Peter,

My sincere apologies but it wasn’t my intension to try and correct you, on the contrary, its much better to understand how the system actually works in principle. I haven’t got that document you refer to so I can’t really comment on the contents therein but I think what you are describing is the “soft close” feature which does in fact operate on the principles of vacuum/pressure on the boot locking mechanism itself and not on the boot open/closing feature. Two separate systems within the whole context of the boot opening and closing operation. If you stand at the rear of the car when you close the boot lid, then you will see the boot lock being drawn down in to the second latched position. As you know, not all CL’s have the remote boot opening/closing feature and if you look above at the OP’s boot lid, then you will also note his does not have it either as evidenced by the two boot lid hinge springs covered by plastic covers to prevent one’s clothing from getting caught in – safety feature. The reason his boot lid is standing proud above the quarter panel is related to the hinge adjustment only, there is no hydraulics involved to close it here.

The actual boot locking mechanism is unrelated to the remote boot open/closing feature, which is primarily controlled by the hydraulic pump and ram mechanism, which is located under the battery tray. The PSE control module, which actually switches the operation of the hydraulic pump relays, is located on the n/side rear behind the boot trim just above the wheel arch. The price of the part you quoted sounds about right for the hydraulic pump, whereas, the PSE control module is slightly more expensive than that. I had several of these PSE pumps replaced during my long ownership of my CL, but never had an issue with the hydraulic pump for the remote opening/closing feature

Have a look at the two schematics I’ve attached below for reference purpose only and see which one, if any, is similar to the one you have. I have often heard people make similar comments to the pump under the battery as being pneumatic, which is quite wrong, as it is hydraulic. If I can find time later on, or sometime in the week as I am off on holiday this week then I have got some pictures on my PC of both items and will post them up.

Best Regards,

[FONT=&quot]Dash1


[/FONT]

 

[Dash1]

Hi Peter,

As promised, here is an update on the part number that you supplied and the photos I promised. I have just spent the last 10/15 minutes looking on the Internet and under your part number most people are selling it as a vacuum unit. This is misleading and totally incorrect as the unit is one of a hydraulic component and can in no way ever be linked or incorporated in to a vacuum/pressure line. It’s a “stand-alone” component that is electrically activated solely by the PSE control module, hence, the two relays in the picture.

Also, If you look at the post after this one, then I have attached a wiring diagram and system flowchart that I constructed for one of or American members on here last year, Kevin - (hallman2228). He had a similar issue with the hydraulic opening/closing on his CL55. Here the link below to that particular thread and post number 11 which I have just taken those two photos from.

Hope this info helps.

Link: - http://www.mbclub.co.uk/forums/electronics/175804-power-trunk-problem.html

Best Regards,

[FONT=&quot]Dash1


[/FONT]

 

[Dash1]

Peter,

Addidional photos attached

Regards,

Dash1

 

[C43AMG]

Dash, really it's not a problem.

The first schematic is exactly the one I was quoting from. I would like to thank for explaining to me the in's and out's of the boot closing mechanism, very much appreciated.

I just wish you lived around the corner from me, so you could look after my CL. Saying that though, I don't think Olly ( Of PCS Fame ) would be very happy. Once again many thanks.