I wrote my review of the TomTom Go 2405 a few months after I first purchased it and thought that I would write a short update to that review after using it for approximately 2 years.
The reason for this update to the original review is that I reached the point where the maps which are included in the TomTom Go 2405 no longer fit into the built in memory for the device. As the maps get larger and larger, it was only a matter of time before the update for the included maps (Canada, US, and Mexico) would no longer fit on the device. It took approximately 2 years for the map update for Canada, US, and Mexico to no longer fit on the GPS unit. Since the device doesn't have an expandable memory slot, I was under the impression that the device would no longer be useful and it would be time to purchase a new GPS device.
However, this is not the case. When I received a prompt that a new map update was available for my device, I tried to update my device and was informed that the map would no longer fit on my device. I was presented with the option of selecting a certain map region predefined by TomTom onto my TomTom Go 2405.
Since I live in Canada, there was no question that I wanted the map of Canada. Since I also travel to the US, I also wanted the map of the US. However, the map of the US was too large to fit on my TomTom Go 2405. If I wanted Canada, I had a choice between selecting Canada with a different region of the US predefined by TomTom (i.e. I could not pick which states I wanted to include on my device but must select the entire region). Since I live in the eastern part of Canada, I opted for all of Canada and the eastern states. If I were to visit Las Vegas (which I often do), I would just update my TomTom device and pick Canada with the western states.
Based on how large the maps are getting and the predefined selections, even if I take extra care of my TomTom Go 2405 GPS unit, I expect that if the predefined maps stays as is (where users cannot select the individual states or region of Canada), the GPS will no longer be capable of being updated in another 2 years. After 2 years, even when fully charged, the TomTom Go 2405 GPS can no longer stay on for more than a few minutes unplugged so if you require the use of the GPS outside of your car after 2 years, you will either need a new GPS unit or you will need to replace the battery.
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