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This is going to sound ridiculous but there is no other explanation.

I used phone GPS while driving in my car for the past 3 years. 3 different phones, that is, and they all worked fine. I was recently in an accident and the car went away for repairs and they had to take off the front bumper, parking sensors, etc, to do the repairs. When the car came back a month later, I noticed that my phone GPS was going crazy while I was navigating home. It would detect my location, not move at all while I'm driving, and then randomly appear elsewhere with misleading directions. My partners phone also experiences the same thing in my car.

I never thought it could be car, so I reset location settings etc, everything. Still, GPS goes crazy inside car. This is even when the phone has no physical contact with car either through charger or holder. I then went into my partners car for a similar drive and GPS was working fine.

I can only assume now that something happened during the repairs that is causing interference with the GPS as someone suggested on my question on stack apple.

Is this possible and if so what could it be really?

Update The car got ceramic coating more than six months ago. The windshield was also coated. Is it possible this could be causing issues?

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  • You need to determine if it's your phone or other GPS devices are effected the same way.
    – GdD
    May 16, 2021 at 12:47
  • Or aliens have installed their GPS-jammer equipment while the car was in the shop.
    – EᑎOT
    May 17, 2021 at 16:15
  • @EᑎOT Yes, that's possible. Improbable, but possible.
    – pnizzle
    May 18, 2021 at 0:19

1 Answer 1

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Yes it is possible. If something in the car is generating interference in the 1.5 GHz band then it can easily block the very faint signals from GPS satellites. What could be doing this is another question. Conceivably almost any electronic circuit could do this if it’s damaged somehow, but I’d be inclined to think that the ignition would be the most likely thing.

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  • I recently had new parking sensors installed. Could they be a cause?
    – pnizzle
    May 18, 2021 at 0:19
  • They are typically ultrasonic rather than radio-based, but essentially any electronics that isn’t shielded properly could be the cause. If you walk round the car you may be able to identify the area where interference is worst. There are apps for apple and android that give you information on the signal quality (HDOP)
    – Frog
    May 18, 2021 at 1:00
  • Heya. Please check my update. Is it possible ceramic coating could be causing the GPS blocking issue? The windshield was also coated.
    – pnizzle
    Jun 14, 2021 at 8:52
  • Ceramic coating shouldn't interfere as it doesn't contain metallic particles. Parking sensors are not activated at all times so it couldn't be them. Is there anything else you've done to the car you haven't mentioned yet, such as window tint?
    – NetServOps
    Jun 14, 2021 at 9:25
  • I wouldn’t be sure that a coating described as ceramic doesn’t contain metallic particles. Perhaps you know more than I do about when parking sensors are activated- care to share?
    – Frog
    Jun 14, 2021 at 10:15

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