Garage door VERY limited range
Homelink has told me to call Mercedes. Before I do so, has anyone else run into this issue?
Last edited by Chucky300; Mar 16, 2014 at 04:27 PM.
Like Chucky I have found the gate does not open well for me either, even my manual clicker does not work well, unless I roll down a window. My home alarm system FOB also does not work well unless I roll down the window.
That film on the windows is very effective at blocking a significant range of radio frequency devices for me...



Last edited by Jason B; Mar 17, 2014 at 11:38 AM.
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There are some cut-outs in the coating for toll/car-pool lane readers & radar detectors (that why they work poorly when internally mounted).



Credit this fix below found on a Mopar forum. It involves lengthening the antenna on the head unit by a specific amount (a 1/4 wavelength to 1/2 wavelength?) and possibly a reroute. Instead of the o/p's use of a butt connector, I soldered the two wires together..I don't trust butt connectors with microvoltage connections.
There's another post, which I've misplaced, for those who want to figure the length of their antenna based on the garage door frequency, which should be on the name plate of the head unit.
So far (a 4 day test), it works.
--------------------------clipped from original post on Mopar Forum------
My Magnum EVIC HomeLink (despite the dealer replacing it once) did not have the range of my 300M, nor the hand-held remotes. I solved it by lengthening the garage door operator antenna by a fractional wavelength. That is to say I doubled the length of the OEM opener antenna.
All you need to do is:
1. Get a piece of 18-22 gage (not important) wire exactly as long as the existing antenna (you will have to guess the length in some cases when the wire disappears into the housing).
2. Use a butt connector to join the stripped ends of the existing wire and the new one.
3. Let it hang down from the opener.
Now the Magnum hits the opener from a reasonable range and the others can hit it from about 100m away!
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If you have a light colored interior it can get very bright, especially in sunny environments. Here in florida with the light colored interior we added a tint film to our car in order to keep the interior a little less bright which makes driving a little more relaxing in addition to reducing the heat a little more too.
If you have a light colored interior it can get very bright, especially in sunny environments. Here in florida with the light colored interior we added a tint film to our car in order to keep the interior a little less bright which makes driving a little more relaxing in addition to reducing the heat a little more too.



A tipoff might be if any (internal,not the kind attached to the front bumper)EZ Pass kind of toll transponder (many folks in urban areas have them) works properly.If you have one and it doesn't work then it's the special "tint" of your windows blocking various radio waves.







