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Cadillac ELR Forum (2014-2016) Discussion, The MSD in Past Cadillac Vehicle Discussion; I was reading more about the ELR and came across the MSD. I haven't ever heard that term before and ...
  1. #1
    Deafsoundguy's Avatar
    Deafsoundguy is offline Cadillac Owners Member
    Automobile(s): 2016 ELR
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    The MSD

    I was reading more about the ELR and came across the MSD. I haven't ever heard that term before and the document doesn't even describe what that means but it's the Master Serviced Disconnect for terminating your high voltage battery to the rest of the car. It is located right behind the console compartment armrest beneath the console pull-away. The document states that it should be replaced every 45,000 miles... wow. I thought "what the heck for?". The more I think about it, the only reason I could see is that maybe that much current through that connector is pitting the contacts via small arcs over time. I see this in a micro form on all my audio stuff where power amp output has to go through small connectors.

    I thought maybe some of you may like that info. MSD.jpg

    I also found an interesting document, 3 pages of PDF that has some good info, as well as shows the car chassis is 80% steel and designed for quite a whallop. I bet if that was aluminum... well maybe not as strong but think how much faster the ELR would be if that weight was out of the car.... Probably way faster than the i3, which has the same performance time (2016 ELR). I know from owning the i3 that the BMW was highly sensitive to weight. With just me in the car it would go pretty quick but add even a single triple cheeseburger eating American passenger and you would really notice the car not liking the weight - God forbid 4 people...

    I tried to attach this PDF about the ELR and electrical info for first responders, but the PDF file size it too big. Heres the link to the GM technical college 3 page info:

    https://www.google.com/url?sa=t&rct=...HEyLgOkJ76ycjS

    Hope someone will enjoy the info and pics...

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  3. #2
    m_eaton53 is offline Cadillac Owners Member
    Automobile(s): 2015 Cadillac XTS Platinum
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    Re: The MSD

    Hey, an actual (relatively) cheap part!
    https://www.ebay.com/itm/GM-CADILLAC...-/132257064925

    This is exactly how it is with a Merkur XR4Ti. If an XR4Ti part is shared with a Ford Sierra, it's cheap. If it's not, then pay up.
    Replace XR4Ti with ELR and Ford Sierra with Chevy Volt and... you get the idea.

  4. #3
    loomis2 is offline Cadillac Owners Member
    Automobile(s): 16 ELR
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    Cincinnati, Ohio
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    Re: The MSD

    Quote Originally Posted by Deafsoundguy View Post
    I bet if that was aluminum... well maybe not as strong but think how much faster the ELR would be if that weight was out of the car
    I don't think about how much faster but rather how much more range it would have.

  5. #4
    Deafsoundguy's Avatar
    Deafsoundguy is offline Cadillac Owners Member
    Automobile(s): 2016 ELR
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    Thread Starter

    Re: The MSD

    Oh and here's a pic of the battery with the orange power plug on top, so it's easy to visualize how the power plugs would look and work under that armrest rear pullawayCadillac-ELR-Batt.jpg
    myoda likes this.

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