If you own an old Garmin satnav and manage to do a free upgrade or a paid one for new maps, then you certainly have encountered this error in our title above.
Once you installed the maps on your Garmin navigator (meaning older models like the Nuvi 250 or 760) if you tried to calculate a route over a distance of more than 700 -800 km, what you received during route calculation was this error : “Route Memory Full “or” Route Calculation Error: Not Enough Memory Available. ”
What actually happens?
At the time your Garmin navigation system was designed, maps were smaller and had less data, and the device was designed with a less powerful processor and less RAM (comparing to what exists now on the market).
Current maps from Garmin be it US or Europe, contain much more data about the structure of the road and points of interest. Besides, Garmin maps doubled in size last year if we talk about City Navigator.
How do we resolve this error, so that we can still calculate a longer route on an old Nuvi series?
The first solution – software update and memory cleaning.
Of course the first step is to make sure we have the latest version software on our GPS navigation system. Even if we own an older model, Garmin offers free upgrade of its software for most devices. Once the update is done, this longer route calculation problem could be solved.
Memory cleaning means you have to delete all history and all routes stored in memory, as the first step. Then you should connect the device to your PC, and delete the archive of trails on your Garmin GPS. The exact method can be found here:
The second solution – use a smaller map, having only the routes that we need.
If we own Garmin original 2015 maps along with Mapsource software, then we can select only certain areas to be installed on our device. For example, we can choose only two or three countries that we know we will transit. With less data loaded into the memory, the long route calculation errors problem could be solved on the Garmin device.
Solution three – route calculation dividing it in more phases
It’s a compromise, if the first two have not worked. Basically if you have a longer route, we will divide it into stages. If you have a route from A to D, we will make a route from A to B and then from B to C, and finally from C to D. We have to take care that these routes have around 500 km, and about any Garmin Nuvi from the old series copes with new maps on this distance.
If you find other solutions we expect those in the comments, of course, we all have to learn.