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Thread: Coolan level sensor retrofit

  1. #1
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    Coolan level sensor retrofit

    I just went thru 2 coolant lever sensors on my 95 M3, the deal was according to a BMW tech at the dealer, that the old sensors tend to go bad quicker than the new style sensors. The cut off date for the old sensors is 6/95. All cars produced before this date share the old sensor and you need to do to fix this problem is retrofit it to the new style sensor, here Im gonna list all the parts you will need for this upgrade, it really simple and better if your car was built before 6/95 this includes 325's also,

    61-13-8-365-340 Plug 1 each
    61-13-0-005-199 Contacts 2 each
    61-13-1-379-833 Heat shrinking covers for covering the wires 2 each
    61-13-8-353-746 Connectors 2 each
    61-31-8-360-855 Switch (this is the sensor itself)

    Procedure is very easy, just splice the wires and use the new connector, that easy. I just did it and no more problems so far with that annoing "check coolant level" message on the OBC anymore.

  2. #2
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    Why the heck doesn't the manufacturer just make the newer, better sensors with the old style plugs?

    Awesome info, thanks! Will have to remember that one.
    James Muskopf
    RRT Racing
    DC Metro's premier BMW service and racing facility

  3. #3
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    Quote Originally Posted by JamesM3M5
    Why the heck doesn't the manufacturer just make the newer, better sensors with the old style plugs?

    Awesome info, thanks! Will have to remember that one.
    I know, those old style sensors are just junk, well you should know this already. Besides the new style sensor and connector looks nice and modern, the old one is big as sh.. the connector that is. Once you have both sensors side by side you could tell the difference, new one has better design.

  4. #4
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    Old Style
    Attachment 147461
    New style
    Attachment 147462

    See the difference
    Last edited by mredwin25; 08-02-2007 at 01:32 PM.

  5. #5
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    99 M3, 01 F350
    i have a 99 M3, and still get the check coolant on the OBC.. fluid levels are fine.. 71K on the odo
    "Torque is like cowbell... you can never have too much." - Michael Cervi


  6. #6
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    Well you have the newer sensor on yours stock, but at 71k I think it needs replacement already, it's only like $22 at dealer

  7. #7
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    97 E36M3 S54
    On my car the connector that clips into the sensor had a broken contact so I had to fix the connector not the sensor...

  8. #8
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    I replaced my coolant level sensor a couple months back to get rid of the message with the new style you show there. Guess what? It's back again! About the same regularity as before too.

    Aggravating, yes. I wonder if it's a grounding issue now.

  9. #9
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    Yeah mine has been popping up every now and then. Usually when it's cold out and I 1st start, but then it shuts off after about a min of running. Or sometimes when I shut the car off it pops up. Kinda weird. Car is a 99 with 43,000 in it.
    2004 LSB M3| 6MT | Navi | Black interior | medium window tint | Bilstein PSS10s | TMS F+R Adjustable Swaybars | Gills/grill Matte Black | LSB painted bumper reflectors | Hoen foglights | OEM HIDs | VCSL bootlid | CSL rear diffuser | Ultra-Staggered VM VB3's

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  10. #10
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    Or if you were wanting to remove the coolant sensor all together, there is a cap for the tank that you can use. (far a race/track car obviously)

    Part # 17111719430
    Chris
    DrVanos.com

  11. #11
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    A few of you guys just need to properly bleed your system to get rid of the OBC reading.


  12. #12
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    Quote Originally Posted by ceegeezM3
    Or if you were wanting to remove the coolant sensor all together, there is a cap for the tank that you can use. (far a race/track car obviously)

    Part # 17111719430
    if it was that easy people would just unplug the sensor but leave it in the resivor right?

  13. #13
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    If it was that easy people would just unplug the sensor but leave it in the resivor right?
    Lol, yep. But what fun is that?
    Chris
    DrVanos.com

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