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Old 01-05-2010, 09:55 AM   #1
pleiadi
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Default 2008 Impreza: GPS antenna SLOW taking satellites. Best place to put it?

I installed a Navi in my 08 Impreza only problem is that GPS pickup takes 30 minutes! I scotched the GPS antenna behind the Navi (so under the temp/clock display) so I guess the windshield is shielded and blocks radio signals.

I thought about rerouting it behind the mirror (black area on windshield should not be shielded) but it's a long way from the navi

Any tips on where is the best and easiest place to put it and how?

Thanks
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Old 01-05-2010, 09:57 AM   #2
boostdog
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does it have a magnetic piece to put onto of the car? if it does route it outside and onto the roof. if not try moving the antenna to the passenger side of the dash at the spot where the window and the a piller meet. see if that works better.
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Old 01-05-2010, 10:11 AM   #3
pleiadi
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It's not magnetic and the cable is less than 2 meters I guess...

The difficult thing is how do I route it to the A pillar? Replacing the radio was pretty easy but unmounting the rest of the dash seems not... Maybe I have to unmount the glove box?
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Old 01-05-2010, 10:33 AM   #4
boostdog
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run it under the dash zip tied to some of the wires above the footwell up behind the a piller...just start looking at the panels you'll see it's very easy to run wiring like that if it's anything like my 07, which it should be, most cars in general have a snap on a pillar panel with room behind it.

what brand navi do you have? and that seems very short for an antenna wire!
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Old 01-05-2010, 11:48 AM   #5
teiva-boy
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Interesting...

On both a Chevy Suburban, and my Forester, I've had my antenna UNDER my dash.

Of course you want to make sure that it's attached via its magnetic base to a dash support or similar... Thats how most of all the GPS antenna's are that I have worked with. Thus I'm really surprised that you say that yours is NOT magnetic... Are you sure?
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Old 01-05-2010, 11:52 AM   #6
pleiadi
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Yeah I'm sure, I have a similar unit on my other car (VW) and there the antenna is magnetic.

I will try the suggestions, maybe someone with my car or 09 forester may step up in the discussion.
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Old 01-05-2010, 10:55 PM   #7
manjambles
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Navi antenna's are not made to be exposed to the elements.

also having them around or near the unit can cause heat damage from either the unit or heating ducts.

best place is near the A piller, use double side adhesive and stick it on the dash stealthly. the A piller is not had to take off, give it a lil tug.
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Old 01-06-2010, 02:47 AM   #8
teiva-boy
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Quote:
Originally Posted by manjambles View Post
Navi antenna's are not made to be exposed to the elements.

also having them around or near the unit can cause heat damage from either the unit or heating ducts.

best place is near the A piller, use double side adhesive and stick it on the dash stealthly. the A piller is not had to take off, give it a lil tug.
Say what? You may want to clarify that statement... They are exposed to the elements, they are stuck on the exterior of cars reaching over 100 degrees, rain, car washes, freezing weather, etc. Both OEM units, and aftermarket.

Pioneer's GPS antenna's are rated from -40 to 185 degrees. I've seen countless OEM installs with antennas on the trunk lid or rear roof area.



OP, at this point, for troubleshooting purposes, if the antenna is placed in direct view of the sun, say out a window, does signal acquisition happen faster? What about on the dsh, behind the windshield?

Which ever works better, that will probably be your answer. If none make a difference, then get a replacement antenna.
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Old 01-06-2010, 12:05 PM   #9
SVXdc
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Subaru places the OEM GPS antenna under the dash, above the instrument cluster. See picture here
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Old 01-06-2010, 02:37 PM   #10
pleiadi
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Great find SVX thank you!
Now I just need to find a way to easily place it there
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