Keyless Entry RANGE
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Electrical Technical Information Discussion, Keyless Entry RANGE in Item Specific Cadillac Discussion; The range on my keyless entry is pertty much non existant. I have to be sitting on top of the ...
  1. #1
    WoodShoe's Avatar
    WoodShoe is offline Cadillac Owners Fanatic
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    Keyless Entry RANGE

    The range on my keyless entry is pertty much non existant. I have to be sitting on top of the car, before it will work. (well, about 5 feet will do it...sometimes) but you get the picture. I have changed batteries in my keyfob many times. No change. Purchased a shiny new keyfob. No change. Replaced the batteries in that. No change any suggestions? (oh, its a 97 STS)

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    WarrenJ's Avatar
    WarrenJ is offline Cadillac Owners Enthusiast
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    Re: Keyless Entry RANGE

    Someone on the Eldorado/Seville Forum once referenced a technical service bulletin that suggested something like putting aluminum foil under the RKE module to improve reception. Maybe if you search hard enough you might locate it.

    BTW, you can usually double or triple the range by holding the fob to your chin. Really! Try it, it works.

    Regards,
    Warren

  4. #3
    Zorb750 is offline Cadillac Owners Connoisseur
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    Re: Keyless Entry RANGE

    Or the side of your head. The Eldorado and Seville's RKE module is on the back of the rear seat, accessible via trunk. The "antenna" is just a strip of 3cm or so wide metal tape that runs along about half of the width of the seat, and one diagonally at about a 30 degree angle to it the other line. They intersect right at the RKE box, but there's no direct connection to it. One of mine was damaged when something flew across the trunk into the back of the seat, so I used a piece of metal tape, about 6mm wide, the high heat pure aluminum tape to replace it (I just stuck it over what was there), and it did wonders for range.

  5. #4
    El Dobro's Avatar
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    Re: Keyless Entry RANGE

    It's funny, but sometimes the range varies by where you're using it. I had a 91 Seville and the transmitter would work from 50-60 feet in the parking lot where I work, but I could lie it on the car and it wouldn't work if I used it in Manhatten.

  6. #5
    FrankT's Avatar
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    Cool Re: Keyless Entry RANGE

    What you guys are saying is very true. My 99 sts has a very poor range also I replaced everything like WoodShoe. So I located the RKE module and checked out the antenna like Zorb750 I could not find the antenna on my 99. I took apart the module and found out it has a small sliver can which is an internal antenna. I ran a jumper wire from the can along the bottom of the package tray to a ground. Now only the unlock range is poor, the lock range is excellent, almost doubled range.

    I also went back and placed aluminum foil over the module still poor range when unlocking only.
    I’m not done yet going to keep trying different ways of improving the range, I can be standing next to the car and have to keep hitting the unlock button several times for the car to unlock.


    Frank

  7. #6
    JimD is offline Cadillac Owners Connoisseur
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    Re: Keyless Entry RANGE

    Quote Originally Posted by FrankT
    ....
    I took apart the module and found out it has a small sliver can which is an internal antenna. I ran a jumper wire from the can along the bottom of the package tray to a ground. Now only the unlock range is poor, the lock range is excellent, almost doubled range.

    Frank
    Remove the end of your "antenna" jumper from ground and run the wire up the rear edge of the package tray so it is behind the rear glass.

  8. #7
    FrankT's Avatar
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    Cool Re: Keyless Entry RANGE

    Quote Originally Posted by JimD
    Remove the end of your "antenna" jumper from ground and run the wire up the rear edge of the package tray so it is behind the rear glass.
    JimD You da man, I did as you said, I thought maybe grounding the wire would cause the whole car to act as an antenna. I now have over double the range when requesting Lock or Unlock. I am very pleased with the range now.
    Thanks,
    Frank

  9. #8
    caddyalwaysready's Avatar
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    Try That

    Hi friends,You know Russian roulette? yeah you should try like this.put your remote control beside of your head and you will see the range .

  10. #9
    JimD is offline Cadillac Owners Connoisseur
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    Re: Keyless Entry RANGE

    It has more to do with altitude than being near your head. Try it with your arm fully extended straight above your head and see what range you get. Try it again standing on a ten foot ladder and see what range you get.....

  11. #10
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    Re: Keyless Entry RANGE

    Quote Originally Posted by JimD
    It has more to do with altitude than being near your head. Try it with your arm fully extended straight above your head and see what range you get.
    Nope. You try it JimD.

    Hold the fob in your hand in front of your head at eye level and try it. Now hold it to your chin and try again at a greater distance. You'll notice a great increase in range.

    It's a curious phenomenon that befuddles even technically aware folk.

    Regards,
    Warren

  12. #11
    Zorb750 is offline Cadillac Owners Connoisseur
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    Re: Keyless Entry RANGE

    Chin or side of head, like above temple area.

  13. #12
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    Re: Keyless Entry RANGE

    Before anyone goes ripping out the carpeting in the trunk like I did, the RKE module was infact NOT on the rear seat, but rather right next to the light in the trunk, which you cannot miss.

  14. #13
    weister42 is offline Cadillac Owners Enthusiast
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    Re: Keyless Entry RANGE

    Do you guys know where this remote module is in a 98 Deville? My remote range is about 8 feet

  15. #14
    FrankT's Avatar
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    Re: Keyless Entry RANGE

    Quote Originally Posted by weister42
    Do you guys know where this remote module is in a 98 Deville? My remote range is about 8 feet
    On a 98 Deville the RKE module is called a RFA module and the location is mid-way behind of the rear seat, but you access it though the truck. It may have a different antenna than the RKE module.
    Frank

  16. #15
    iametarq's Avatar
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    Re: Keyless Entry RANGE

    FrankT, do you have pictures of this by chance? it would be very helpful before I go tearing into my trunk now that it's snowy and cold here in Northern Michigan.

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