My sat nav seems to forget its last location. I calibrate it so that it is spot on - which it retains until I turn the ignition off. When I start up again, the location might be a few hundred yards off. And within five minutes, it could then be miles off. This happened with the original version of software that came with the car. I updated it to the latest (which I think is about 2014), but it still happens. Everything is fine following calibration, but gets forgotten once the ignition is off. Any suggestions ?

I think you will find it's your Ariel, the reason I say this has I had the same problem with my 2012 VW golf water gets in and cannot find where it is?

Could well be your gps aerial on roof unplug it and fit a tampory one here is link below cheap only £4 for one I bought off eBay they are magnetic so just place it on roof temporarily to see if this cures it if so there’s a wiki on here how to feed it into original roof gps aerial mine works spot on now.
https://rover.ebay.com/rover/0/0/0?mpre=ht...2139235815 Range Rover Vogue SE 4.4 SDV8 SVO Stying Pack
Audi A4 2.7 TDI S Line Black Edition phantomn black
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