Command ntg1 wrong gps location

[Terrykal]

Hello,
Another thread regarding a wrong gps location.
This time not sure if it's the antenna because I have already swapped the antenna twice with aftermarket from ebay/amazon that have also confirmed to work for other similar models.

My story is a 2006 cls with command ntg1.
Last summer car went to specialist for a check and some fluid changes (brakes, diff and gearbox) before my Europe trip. At the time, the main battery was also replaced with a merc genuine one from the specialist. Till that morning the maps and location was working brilliantly.
In the afternoon I left from the specialist without checking the maps or navi.

Next day I loaded the car and hit the road. Before start driving and before checking my navi I decided to update the dvd maps disk with a v19 that had purchased days ago (car had dvd maps from 2005).
It was 5 in the morning, I was happy that I was starting my road trip and hit the roads while I was waiting for dvd maps to load. From that moment I lost my GPS location (again to mention that hadn't checked if location was working when leaving specialist the day before with the new battery installed).

My location was stuck between south Netherlands and north Belgium for months while I was in South Europe and till I came back. After re-entering UK it now says that I am in Northern France (not Belgium anymore) while I am located in Hertfordshire.

I have swapped twice antennas. Driven with them on the roof or the bootlid for miles and miles. Nothing changed.

I am considering a faulty antenna (Fakra) pin on the actual navigation drive that my had gone blown from the battery swap but this is just a thought. I have also removed the power cables and have disconnected the battery too for hrs just in case it could reset the navi drive. No joy unfortunately.

Any ideas welcome. Thanks.

 

[AMGeed]

Did you try to update your maps with a genuine OE DVD or was it a pirate one from eBay?
I ask as its been known for the dodgy discs to brick your navigation.

If you used a genuine dvd and still have no navigation working I'd suggest a trip to Comand Online in Lightwater , just of the M3 Surrey.
They will be able to diagnose and suggest a fix for your problem.

Comand.co.uk – Mercedes Retrofits Specialists – Unique Car Sound & Security

 

[Terrykal]

Thank you @AMGeed.
Yes indeed I used a genuine dvd and not a copy. Weird situation. But to be fair, navi seems responsive, maps can be read and guidance is working too with street names and directions.
It's the location that ruins everything and make the navi useless

 

[Trev1964]

I had same issue.
Aerial was bolloxed.
New one cured it. Silly cost though.
Aerial is reasonable price. 4 hrs labour to fit though.

 

[AMGeed]

Thank you @AMGeed.
Yes indeed I used a genuine dvd and not a copy. Weird situation. But to be fair, navi seems responsive, maps can be read and guidance is working too with street names and directions.
It's the location that ruins everything and make the navi useless

OK. Seems a trip to Comand is in order.
The above post appears to point to the problem.

 

[Terrykal]

Just a quick post since I managed to fix this.
It appears that I had 2 issues simultaneously.
This is why the 2 news aerials I bought didn't do the trick. Or the unplugged power cable of the navi.
I decided to go with a new used dvd navi at the boot from ebay. I ordered a late 2007 model (upgraded p/n) and as soon as it delivered to me I stripped the boot in few minutes (have done it many times now trying to get around the issue) I removed my late 2005 navi and installed the late 2007 model, I went with the new dvd I had with the 2019 maps but again it didn't find any satellites. I then plugged one of the new antennas I purchased earlier this year and it found location within seconds.
I have been checking testing etc for a month now and all looking perfect.
So to conclude, as per my thoughts and assumptions, my old navi had a fault with the antenna plug since apart from location it worked. Plus the fact that the factory roof antenna was faulty too.
All good with a cost of about £40 (£25 the navi dvd and another £15 for the new antenna and the spare one I have and bought just in case the first new antenna was faulty).