SL-Class (R129) 1990-2002: SL 280, SL 300, SL 320, SL 500, SL 600, SL 60 AMG

SL/R129: Newbie - Vacuum Line Question

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Old Jan 14, 2023 | 08:25 PM
  #1  
AlohaBrit's Avatar
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From: Honolulu
2000 500SL
Newbie - Vacuum Line Question

Hi,

Super excited to be a new entrant to R129 ownership.
I purchased this 2000 500SL this week as a long term ownership project. I've been seeking a quirky color SL for ages. & here is it is.
This forum is so awesome & I've done loads a searches & reading.
Curious if anyone knows the answer to this? Any help appreciated :-)
  1. Under the hood the Green vacuum line connector has broken.
    • Anyone know what that line & the unit does?
    • Looks like maybe 2 lines at the bottom of the unit have become detached. I can only see the 1 green line.
  2. I can't find the vacuum line connecters anywhere.
    • This is the closest part number I could find 2028000253.
  3. There is a cable in the same area of the engine bay, but I can't for the life of me see if it is supposed to plug into something,






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Old Jan 15, 2023 | 01:07 AM
  #2  
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From: Yorba Linda CA
94 SL320 98 SL500 99 SL600 07 SL55
It's for the AC management. i assume your AC vents are not working properly?
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Old Jan 15, 2023 | 01:12 AM
  #3  
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Hi @FATHERTIME thank you . yes, my center & lower vents do not blow any air
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Old Jan 15, 2023 | 01:21 AM
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From: Yorba Linda CA
94 SL320 98 SL500 99 SL600 07 SL55
Maybe someone can supply a diagram of those lines. No idea why it would be cut you may have to remove some covers to get to the other piece if so I would splice it other wise follow to the end point, Gotta take a lot apart so pictures and keep track of all the parts. Next time it's a lot easer.
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Old Jan 15, 2023 | 01:29 AM
  #5  
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Nice one. Appreciate the guidance.
I found the connecter. https://www.autohausaz.com/pn/MB-2028050344

Last edited by AlohaBrit; Jan 15, 2023 at 01:39 PM.
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Old Jan 15, 2023 | 03:45 PM
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From: Encinitas, CA
'00 SL600
hey, you did very well in getting a Designo Slate Blue R129... I have its big brother, a SL600 in the same color.

here's a step by step on how to remove all the parts to get down to the vacuum lines ... the endless pics may help you out a ton

https://www.benzworld.org/threads/ga...epair.1613299/
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Old Jan 16, 2023 | 02:53 AM
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@Sandy Eggo thanks. I have never seen this color before, so glad I found it. Looks awesome
The post looks great. I'll dive in.
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Old Jan 16, 2023 | 01:39 PM
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From: Encinitas, CA
'00 SL600
Designo Slate Blue is quite rare and was only offered model year 2000+ (when sales of R129 were lagging) to try and juice the numbers a bit. They offered another Designo edition in Black with black/red interior.

Bill Gates was famously reported to have owned the SL500 in this color.

If I had to guess, there are maybe a few dozen SL500s in Designo Slate Blue and perhaps fewer than 10 SL600s.

Good luck with the repair and enjoy her in good health!
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Old Jan 16, 2023 | 01:43 PM
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Sandy Eggo's Avatar
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From: Encinitas, CA
'00 SL600
I wonder... is one of these your car?
https://carsandbids.com/auctions/3O57w2ar/2000-mercedes-benz-sl500

https://bringatrailer.com/listing/2000-mercedes-benz-sl500-108/


In the BaT listing, a commenter mentioned that only 129 R129s came in that interior color combo. I'd hazard a guess that 100 were SL500 and 29 were SL600.

Last edited by Sandy Eggo; Jan 16, 2023 at 01:54 PM.
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Old Jan 16, 2023 | 02:42 PM
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Hi,
Neither of those. It was so random. My mechanics customer wanted to sell it here on Oahu. So it worked out really well.
It needs some stuff :-) I'm just prioritizing for a long term of ownership. around 87k miles.
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