Speed Signal/Parking Sensors??

Discussion in 'Electronics' started by skymastor, Dec 18, 2008.

  1. skymastor

    skymastor Hardcore MB Enthusiast

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    One final thing fella's,

    I have searched this and many forums that hosts tonnes of information on how to retro-fit after-market reversing sensors. In fact I'm shortly going to follow a guide from this forum that R2e had posted. Thanks.

    One piece of information that I cannot seem to find (maybe I've missed it??) is how to take a feed from somewhere, possibly the speed signal? that will help in turning the parking sensors, including the display off whilst driving and putting them back on when I slow down again! Similar to the auto-locks on the door when I drive above 11mph. In essence, I am trying to find a "on" power source when the vehicle is manoeuvring at slow speeds then turns off whilst driving and puts back on gain when back to a manoeuvring speed.

    Anyone have any ideas how to do this on a W203?

    Thanks.

    Andy.
     
    Last edited: Dec 18, 2008
  2. bigbobs cl

    bigbobs cl Hardcore MB Enthusiast

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    Why? Don`t you just want them on when you are reversing?


    Bob
     
  3. hitenhirani

    hitenhirani Hardcore MB Enthusiast

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    are you getting front and rear sensors?

    if you slow down to manoeuvring speed, only the front sensors are active and only the front display will light up.

    if you selct reverse gear, both front and rear sensors will be active, and both front and rear displays will light up.

    thats how mine works, but got it with the car, never done a retro-fit.
    maybe alfie/richard maybe able to shed some light on this...
     
  4. bigbobs cl

    bigbobs cl Hardcore MB Enthusiast

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    I fit Steelmate kits, the fronts are activated by the brake pedal, once pressed the sensors are active for approx 10 seconds then switch off. Rears activate by reverse signal from reverse light.


    Bob
     
  5. OP
    OP
    skymastor

    skymastor Hardcore MB Enthusiast

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    Cheers guy's,

    Nice idea of using the brake as a trigger there bob. I do want them on whilst reversing, but yes, I also intend to fit them to the front too (using two sets of 4 sensor kits with digital display). I will designed a circuit that switches the front display (Only using one) to show the rear sensors whilst in reverse and cut them when not, where then the front ones will then be active on the display. But I don't want them on constantly and I don't want to use a switch to get round this. That's why Im wanting to know where I can take a live feed that only operates whilst the vehicle is moving slow and then cuts when travelling faster!

    Well, thats my plan.

    Any further info appreciated..
     
    Last edited: Dec 18, 2008
  6. Stratman

    Stratman Hardcore MB Enthusiast

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    If you use the speed signal to turn on the sensors then surely they will turn on in traffic jams and such like, driving you homicidal in short order. You will end up turning them off with the switch and only switching them back on when you need them. So you don't really need the speed pulse, just the switch. The reversing light operated rear sensors is a good idea though.
     
  7. hitenhirani

    hitenhirani Hardcore MB Enthusiast

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    with Parktronic, once at a low speed, in traffic etc. (not sure on the exact speed), it kicks in, but only for the front sensors.
    when put into reverse gear, both front and back sensors are on.

    Although, I think I have misunderstood the first post, i was under the impression you wanted to fit Parktronic, not aftermarket. apologies for any confusion.
     
  8. OP
    OP
    skymastor

    skymastor Hardcore MB Enthusiast

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    Yes your right Stratman, the long haired general pointed that out to me earlier (die klugsheisser!) and it is a very good point!

    Its a long time since I had a Merc with factory Parktronic fitted, so can someone remind me again how it all operates please?
     
  9. OP
    OP
    skymastor

    skymastor Hardcore MB Enthusiast

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    Na bother hitenhirani, all info received is appreciated. Thanks. You posted your reply just after mine. We must have both been in editing mode.. lol..
     
  10. bigbobs cl

    bigbobs cl Hardcore MB Enthusiast

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    Don`t think speed pulse will work, most are on the Can circuit. If it`s a standard pulse wire then thats all it is, a pulse that gets faster with speed, it doesn`t increase voltage.

    Steelmate do an OE looking kit for the rear, display fits in the centre at the top of the rear screen.

    Bob
     
  11. OP
    OP
    skymastor

    skymastor Hardcore MB Enthusiast

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    Thanks Bob. You have a webpage for Steelmate?

    Cheers.
     
  12. bigbobs cl

    bigbobs cl Hardcore MB Enthusiast

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  13. OP
    OP
    skymastor

    skymastor Hardcore MB Enthusiast

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    Nice one.. ;)
     
  14. Howard

    Howard MB Club Veteran

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    Can you paint those sensors Bob ?
     
  15. bigbobs cl

    bigbobs cl Hardcore MB Enthusiast

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    Yes, i can order them in black or silver but can be painted, i use one of those SMART repair guys to colour code them for me.
     
  16. Howard

    Howard MB Club Veteran

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    Is it expensive to get them painted by the SMART man ?

    Thinking about a set for mine , nightmare to see out the back of a CLK . So many on Ebay , quality unknown. Nice to see a recommendation.

    Just the basic set , beeping , no display , rear sensors only.
     
  17. bigbobs cl

    bigbobs cl Hardcore MB Enthusiast

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    They charge me £40 to do all 4, may be cheaper if you get them painted before you fit them. I find it easier to fit them first as it saves me trying to fit them before they are dry. Saves the customer coming twice then to get colour codes etc.

    Bob
     
  18. A210AMG

    A210AMG MB Club Veteran

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    Mine have been on 18 months, fitted myself off flea bay. Rears only and two sensors with the screen.

    They are as good as cars I have had with 6 sensors.

    They came ready painted for around £30 all in.

    [​IMG]


    [​IMG]



    You would still require them painting as your car is not a 'standard' colour. The silver matches mt cars paint as close as factory to be fair.

    Easy to fit worse part was drilling...but actually very easy. Remembering how all the trim went back was also fun :)
     
  19. OP
    OP
    skymastor

    skymastor Hardcore MB Enthusiast

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    Nice pic's A210AMG.

    Always good to see other peoples work before I commence with mine. :D I bought these little babies " http://www.amazon.co.uk/exec/obidos/ASIN/B001I1CHCE " already in silver, but obviously not fitted them yet! Two sets in all.

    I intend to do some sort of wire-up circuit were the front and rears work from one display at the front. As I had asked previously, I'm just trying to find a live feed that that cuts while the vehicle is travelling and returns when slowed back down, to add to this if viable. When I do this work, I will take photo's and also give the info for the fit to the forum.

    Be after Christmas now thou...
     

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