Sl Roof

graham991

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Anyone know how to reset the soft top roof sequence on a 1990 R129 SL if there is one ??:)
 

television

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Yes. The roll bar must be raised and the switch held in the up mode for 10 secs in key 2.

The windows raised and the switch held the same.

There are many variants over the years, some cars require the foot brake on.

Is the roof working
 
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graham991

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Thanks Malcolm i will try this tomorrow when i collect it from the Trimmer and will let you know
Many thanks
Graham:D
 
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graham991

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Hi Malcolm in what position do i have the soft top when i start the reset sequence
 

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Has the car had a new soft top fitted.

I have the info on the top front hydraulic and how to fix, I will post back later in the day when I have printed them off
 
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graham991

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It as had the rear section replace but it was not working right before that.
 

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I have sent you the details of the top rail, there are two switches in there, one each side
 
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graham991

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Thanks Malcolm they are working ok as it releases the hardtop and raises the soft top to about 90 degrees then locks ups
 

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Thanks Malcolm they are working ok as it releases the hardtop and raises the soft top to about 90 degrees then locks ups

OK see what I have for mid point
 

MB TECH WARRINGTON

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do a full manual reset with ignition on,

you will need to manually fold the roof to achieve this. you have the tool in your toolkit to do this, the instructions should also be in your book
 
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graham991

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Yes i have ,what do i have to do??
Also when the engine reaches running temp it devolps a misfire and will not start until it as cooled down i have changed both temp sensors any ideas ??
Thanks Graham
 

stats007

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Distributor issue more than likely.

Raise the roof manually - this video might help:

 

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This is not a problem with the re set, it goes almost all the way and stops,,I am trying to find some info, but time has been short this last few days
 

r129co

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My windows wont drop or the soft top release . Should i manually lower the roof and do a re-set?. Mine is a 1991 car
Thanks
 

hairyg

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If the windows won't drop the roof will not move. Have you checked the fuses in the boot? I have had a blown fuse stop the windows from operating on mine and then the roof won't work either. The fuses can also corrode and loose contact as a result. The recommendation in the manual is not to move the roof if the temperature is below +10C. Maybe Kent is a lot warmer than Worcestershire but I wouldn't be moving my roof in this weather!
 

r129co

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Thanks Richard...ah but you have a sunnier disposition up there !
The windows drop ok with from the window switches and go down with the one touch.I guess i will wait till the spring. I have had dozens of W140s but this is my first SL. I have to say thats its probably the most understated/underated and beautifully engineered car in the world. I love the coupes but this,,,,,.....excuse i have to lie down for a bit.
PS i have no power to the seat switches, intermittent wipe or indicators.
The instrument cluster blinks the lights for a few secs then goes out but the engine runs very well. Maybe spiked the cluster resistor?
I wish i felt more confident to contribute more to this forum but you guys keep a lot of these cars on the road.!
 

hairyg

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Sorry I can't help any further, that's the limit of my technical expertise with R129 roof mechanisms. It says an awful lot about the original quality of the car that after 5 years and 50,000 miles I have had so little need to learn more about how it all works. The only major expenditure in that time has been a a new ignition switch/steering lock assembly and having the roof recovered by KHM in Germany as the original was looking shabby although still weatherproof..
 

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My windows wont drop or the soft top release . Should i manually lower the roof and do a re-set?. Mine is a 1991 car
Thanks

This is all linked to the rood ECU, have you checked the fuse there in
 

r129co

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I have checked the fuses in the boot and the engine bay...is there a fuse within the module?
 


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