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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > ConnectedDrive / I-Drive / Navigation Related Discussion > E90 Nav not showing on road



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      10-14-2014, 07:41 AM   #1
Thruxton
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E90 Nav not showing on road

Hello all,

This is my first post, as I am a new owner of a 2009 335i Xdrive M-sport. I bought it private sale and had it inspected before purchase. One of the things that were found was that the Nav system shows the car moving but doesn't align with any roads, crossing over roads, no roads, etc..

I have checked for a similar issue on the forum but can't seem to find something that corresponds with my issue.

I currently have it in the shop and they are having a hard time figuring out how to fix it, also I am getting vague descriptions of what their progress is. So far they have reloaded the software, put the car to "sleep", drove it around and it still isn't fixing the issue. Today they said they would work on it from the morning and do a full hard reset then let it sit to reboot.

Has anyone else had this issue? Is there some things I can do to fix it?

I will post the result of the dealer working on it when or if they can fix it.

Thanks
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      10-14-2014, 08:34 AM   #2
wpetering
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Sounds like GPS isn't "Seeing" enough satellites. Perhaps your antenna is bad?? You're in PA, so you should have a great view of the sats. Just for grins, use your smart phone and make sure you see satellites (my guess is you'll see atleast 10 or so). On the NAV system, when a car is "off course" its usually due to accuracy issues. The NAV program is interpreting what its getting from the antenna, so hopefully the dealership has checked that?? Good luck.
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      10-14-2014, 10:24 AM   #3
Thruxton
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So I got the call back and they have said that they have done everything as far as rebooting, reloading, letting it sleep, doing hard resets, etc... Now the only thing left for them to do is replace the head unit, which with parts and labor will be around 1300-1400 .

I am having them stop and picking it up today with the hope that if I put some time on it and letting the satellites see the car it will correct itself (it has been very cloudy ). They said the antenna is fine they aren't receiving any fault codes for anything including the head unit. I am inclined to think that it is not the head unit if it is not throwing codes, and also the nav itself doesn't seem to be bad because the movement of the car is still working it just hasn't matched to the road map.

I will post if it somehow works after I drive around for awhile.

If anyone has any idea on how to fix this I am all ears. Wish me luck.

Thanks
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      10-14-2014, 12:16 PM   #4
wpetering
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Funny how, "replace the head unit" is the fix-all to correct goofy issues they can't resolve. For what its worth, my head unit is rebooting constantly. Guess what the solution is..... replace the head unit. Bimmerretrofit will sell a CIC head unit coded for my vehicle for $1200 CAD (~$1000 USD). Thats a DIY replacement, which doesn't look to bad to do.

Good luck. Do keep us posted.
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      Yesterday, 09:48 AM   #5
Thruxton
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Update:

The navigation still cannot find the car no matter if I set the location perfectly on top of the car. I have pulled the negative cable off the battery and let it sit for over a hour but that has still not fix the problem. Looking at my service menu in the car it says under the sensor status menu this:

GPS Satellites: 14
GPS Status: No GPS Available

Under the other navigation service menu I am getting no GPS signal.

I have ordered a Bentley Service manual and waiting to continue the hunt for the issue when I get it.

Based on the no GPS available status I am inclined to suspect the GPS antenna is at fault. The only other thing I can think of is to replace the nav computer but that is a lot of money for something that may not fix the issue and is not really necessary.

Still fighting it....
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      Today, 11:53 AM   #6
Thruxton
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GPS Status Screen

I took a photo of my friends car with a correctly working Nav and then my car. This screen makes me think that the dealer didn't install everything correctly, the nav computer is at fault, or the GPS antenna is at fault.

Anyone else had this screen?
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