SL/R129: Soft top issue
Thread Starter
Newbie
Joined: Dec 2013
Posts: 2
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MB 500SL
Soft top issue
Hello
I have never written on this forum (I'm french and my English is too bad} But I have read a lot ... And it helps me a lot.
Today I need a personal assistance.
After changing on my 2000 R129, all hydraulic cylinders, I am faced with a problem of running soft top
Apparently it is a micro switch problem .
Following the procedure indicated in a thread, I tested the connections of the control module RST.
The resulting output is as follows:
cond 1
open: 4; 26; 44; 46
close: 7; 8; 11; 28; 29; 30; 45
cond 2
open: 7; 8; 11; 28; 29; 30; 44; 45
close: 4; 26; 46
If my reasoning is correct, the problem lies in the conection 8 and 44.
What do these two connections?
How to remedy this failure?
The situation is presented in the following way:
The lid opens, the soft top move out and stops at 90 degrees. The pump stops working.
The verification of the position of the front locks, shows that they are open
The rear locks are open too.
Thank you for your help
Jak
I have never written on this forum (I'm french and my English is too bad} But I have read a lot ... And it helps me a lot.
Today I need a personal assistance.
After changing on my 2000 R129, all hydraulic cylinders, I am faced with a problem of running soft top
Apparently it is a micro switch problem .
Following the procedure indicated in a thread, I tested the connections of the control module RST.
The resulting output is as follows:
cond 1
open: 4; 26; 44; 46
close: 7; 8; 11; 28; 29; 30; 45
cond 2
open: 7; 8; 11; 28; 29; 30; 44; 45
close: 4; 26; 46
If my reasoning is correct, the problem lies in the conection 8 and 44.
What do these two connections?
How to remedy this failure?
The situation is presented in the following way:
The lid opens, the soft top move out and stops at 90 degrees. The pump stops working.
The verification of the position of the front locks, shows that they are open
The rear locks are open too.
Thank you for your help
Jak
Super Member
Joined: Jul 2010
Posts: 598
Likes: 19
From: Eastern Kansas
94 SL 600, 98 993, 89 XJS Conv., 85 Daimlier Princess 16 Hybrid Lincoln 16 Chevy crewcab
You are complete and clear, excellent in any language.
In my experience with this problem it was the micro switch having been bent in the re-installation process. For me, it was a physically moving the switch.
Klaus will be in the mix soon. He is my guru and has Top Hydraulics.
In my experience with this problem it was the micro switch having been bent in the re-installation process. For me, it was a physically moving the switch.
Klaus will be in the mix soon. He is my guru and has Top Hydraulics.
Thread Starter
Newbie
Joined: Dec 2013
Posts: 2
Likes: 0
MB 500SL
Yes, I speak yesterday with Klaus ... The body from the micro switch was effectively bent...
But I repair that ...
The body is, at time, straight and the soft top move more than yesterday... Perhaps is the switch dead ?
Ok I Will wait ...
But I repair that ...
The body is, at time, straight and the soft top move more than yesterday... Perhaps is the switch dead ?
Ok I Will wait ...
Last edited by jakyank; May 7, 2014 at 12:33 PM.
Member
Joined: Feb 2013
Posts: 97
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From: South Africa
clk320 and sl320 V6
Close the top manually and then open it manually - sometimes this helps to sort out the logic of the electronic controller. Most problems are due to the magnetic micro switch on the windscreen cover and the micro switch on the extension cylinder of which you are aware.
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Joined: Sep 2011
Posts: 475
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From: On the beautiful Oregon Coast
03 SL Kleemann, 97 SL320 pano top, 95 Lorinser E320 Cabrio, Ferrari 360, Tesla X
Overdue follow-up
This story had a good ending. jakyank had also posted on another forum, where we had a longer discussion and the problem was finally resolved. Yakyank must have had so much fun with the working top that he didn't have a chance to update this thread. 
The thread with the details is http://www.benzworld.org/forums/r129...ontroller.html, posts 42-61. The micro switch assembly 1298205510 for the left fabric bow extension cylinder 1298001772 was slightly bent, and yakyank was able to fix it in place with the instructions below. This corresponded to pin 8 in his measurements, but the problem was fairly easily diagnosed by a full description of the top's malfunction. Pin 44 was probably misinterpreted.
More details about the fabric bow extension cylinder micro switch assembly and on how to fix it are in the following thread: http://www.benzworld.org/forums/r129...witch-p-2.html
Klaus
www.tophydraulicsinc.com
The thread with the details is http://www.benzworld.org/forums/r129...ontroller.html, posts 42-61. The micro switch assembly 1298205510 for the left fabric bow extension cylinder 1298001772 was slightly bent, and yakyank was able to fix it in place with the instructions below. This corresponded to pin 8 in his measurements, but the problem was fairly easily diagnosed by a full description of the top's malfunction. Pin 44 was probably misinterpreted.
More details about the fabric bow extension cylinder micro switch assembly and on how to fix it are in the following thread: http://www.benzworld.org/forums/r129...witch-p-2.html
Klaus
www.tophydraulicsinc.com
