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Garmin DriveAssist 51LMT-D

Anyone have the above device, The problem I have is when on a route and turn a corner for example it either freezes or takes about 2 mins to realize that I have turned, software and maps are up to date with 5 bars for sat connection, the unit has been replaced as garmin thought it may be faulty but same problems are still there, everything is at factory default settings, to be honest as a courier driver this kit is useless because of speed issues and garmin support is a waste of time



  • sussamb 947 Points
    I have a DriveSmart which works perfectly. Have to say that if yours is working out the box as you describe it I'd suspect a faulty device although the chances of getting two in succession is pretty small.
  • My first thought was that I had another faulty unit as well, I would say its acting like a computer low on memory but it could also be bad software/firmware issue but not what you expect from a £300 unit.

  • Boyd 2033 Points
    You could try doing a hard reset. I wouldn't expect a brand new unit to need this, but you never know, and it clears a variety of odd problems. No harm trying IMO - see this link. I believe the new units use the same procedure listed for the nuvi 55, 56, 57, 58, and 60 series but maybe @sussamb can confirm that?

  • sussamb 947 Points
    Master reset for the Drive models is covered here

    However given it's happened on both his GPS I suspect it won't help, but as you say it's worth a try.
  • thanks for reply I had done that on the returned unit after garmin suggested it. Just done it on the unit I have now and went out for drive seem to follow my driving route fine with no freezing, put a postcode in and then went in every direction apart for right one, couple of times it seemed to recalculate the new route a few times before picking one

  • Hey Kenny,

    Can I ask you at what zoom level the display only show the major roads only?
  • btw does the driveassist 50 comes with 8gb for internal storage?
  • It has 14gb of internal storage although I would expect that some of that is reserved for the system.
  • Boyd 2033 Points
    The "system" is not part of the user-accessible memory that is reported by your computer. When you do a firmware update, it's flashed to this protected memory; you can't access this at all yourself. Now there are some "system" files that are stored in user-accessible memory, such as the files in the hidden .System folder. But the "brains" of the GPS are all stored in that inaccesible memory.
  • Thanks Kenny for the reply.
    Can you verify at what zoom level the display stops showing the minor roads and only shows the major roads?
  • not sure of a level but its only takes a couple of clicks on minus button on map for minors to disappear, hope that helps
  • Thanks Kenny, it seems to mimic oldr models (like my 2597) that all roads show on map up to zoom level 500meters
  • I have a 2 month old unit. Three times it has frozen within 1 mile of destination. Change destination and it recalculates route and functions correctly. I feel it is poor software. On one route it showed 120 metres to school for 50 miles :-( Guess the software needs a few rough points ironed out. I will contact Garmin direct and if no satisfactory answer return u nit as unfit for purpose.
  • Nice to know others have issues with this unit, i have more or less guven up with mine despite resets and updates its still gas a mind of its own at times. Final straw was a few weeks ago when i was heading to an address in dunfermline took me well away from correct location. I now use google maps on my phone never let me down yet either in city or country.
  • sussamb 947 Points
    I have a DriveSmart 50 ... hasn't missed a beat since I bought it over a year ago now.
  • Im on my 2nd replacement and same issues are still there. Some great features pity the main function of it is so temperamental
  • Try this address on satnav and google do they both show same place not for me google is bang on yet sat nav is about 150 yards away

    30 harvesters way edinburgh
  • I have just returned my unit to Garmin and received a refurb replacement. Exactly the same problem as first unit. I still feel this is a software issue as unit works if new destination entered ( even if the same destination!) but if powered down is still locked when powered back up. That is not pointing to hardware issue. I am gutted because it is exactly what I want, but a sat nav is useless if it gives up 800 yards from destination.
    Any one got any suggestions for another brand with similar function. My other problem is I do not own Windows PC so wifi update was a requirement.
  • sussamb 947 Points
    What destination? Can you give an example? Maybe there is an issue somewhere there affecting GPS reception.
  • Boyd 2033 Points
    edited March 2018

    Any one got any suggestions for another brand with similar function. My other problem is I do not own Windows PC so wifi update was a requirement.

    I'd suggest a brand such as Apple or Samsung. ;) WiFi updates are no problem and you can choose between many inexpensive apps that store the map on the phone so that no data connection is required. The Garmin StreetPilot app on the iPhone is essentially the same as a Nuvi. The TomTom app runs of both Android and iOS, includes lifetime updates of maps for the whole world and is cheaper than Garmin.
  • alanb 557 Points
    Boyd, is this the same "Street Pilot App" that you use? If so, I don't understand the subscription end date of 2013, as it seems to still be available in the app store.
  • Boyd 2033 Points
    edited March 2018
    No, that's an old version they got rid of around the same time that they introduced ViaGo (or whatever it was called). The currently supported app is "StreetPilot OnBoard", although it is called "Garmin North America" at the App Store. It's definitely still supported as there have been recent map and app updates. I also have the "Garmin Western Europe" app. It's ridiculous, you cannot have multiple maps in the StreetPilot app, so you must have two apps that are identical except for the map.

    Garmin does not allow any data in or out of the StreetPilot app. It has all the same route, track and waypoint functions as a Nuvi, but the data is all walled off inside their app and can't be imported/exported.

    Meanwhile, TomTom just rolled out an update that allows you to sync your data across all their devices and apps. They are really putting Garmin to shame IMO. Garmin seems to think if they ignore smartphone apps (or if they cripple them enough), then they will just go away. :O)
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