heat-reflecting windshield on gen3

I've never heard of the Windshield in any car being able to block GPS signals..

Jeeves said:

I've never heard of the Windshield in any car being able to block GPS signals..

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some cars are fitted with heat-reflecting, or athermic, windshields. These coatings effectively block GPS signals.

do you perhaps have a gps yourself ?

Hey those are pretty cool. Didn't know about the windshields doing that. I've had customers complain to me at work about not getting good GPS reception, maybe that's the problem. We even get some GPS reception inside the building which is made of mostly steel.

No, there is no hole. The film is continuous throughout. You could update the GPS by opening the window if the internal AE is strong enough or you will require an external one. Unfortunately, most GPS devices are very weak and require line of site with the satellites. That is why most have the ext AE option. Not sure if Tomtom has this option.
Try setting in rear window and keep the back seat driver busy.

karazy said:

No, there is no hole. The film is continuous throughout. You could update the GPS by opening the window if the internal AE is strong enough or you will require an external one. Unfortunately, most GPS devices are very weak and require line of site with the satellites. That is why most have the ext AE option. Not sure if Tomtom has this option.
Try setting in rear window and keep the back seat driver busy.

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thanks for the info man :thumbup:

im gonna try to find a re-radiating antenna and place it under the moonroof

i used to put my receiver in the rear. i've noticed that the rear window lets gps signals trough very poorly, but not as bad as the front window.

Stealth said:

Didn't know about the windshields doing that. I've had customers complain to me at work about not getting good GPS reception, maybe that's the problem.

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could very well be the source of your problem indeed, just compare the #of birds from outside the car and inside

some windshields have a 'hole', wich allows gps signals to pass through, simply put the receiver there, it's usually behind the rear view mirror