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Question: Activation Code Error? I just received my TomTom XXL 540M in the mail today, and no matter what I try, I can't get my lifetime maps activation code to work.  I've seen this problem in forums around the web, but no clear way of resolving it.  Has anyone experienced this problem or figured out how to resolve it?
Document: I just received my Tomtom XXL 540 today and was attempting to get the recent updates when I received an error saying that there was not enough internal memory. After reviewing the Device Manager tab I found that the device has only 1885.8 MB of internal memory and that I only had 17 MB available and of course there is no option to add a SD card for additional memory. The new update required around 26 MB and must be installed in order to enter my promotion code for the "LifeTime Maps".
This is my first, so I have nothing to compare it to. However, I really like the XXL 540M.Problem:  The life-time code for the maps did not work. I have been dealing with customer service for over two weeks and they still do not have a "good" code for me. With today's technology how hard can it be to get me a "working" code?UPDATE:  My code now works. Don't go thru email, call them directly.
Makes data entry nice & fast, which is probably why it is turned up.The software is much nicer than Magellan and the community map modifications is great. Updating the device is simple enough and the software seems nice. Enabling the lifetime map service kept failing without a clear error. It turns out you need to run the update first to fully update the device the first time, then it would let me enter the lifetime maps activation code. Restarting the application was the only clue and told me to update.
Obtained TomTom XXL 540M, upgrading from an old Garmin, with one of reasons the "lifetime free map updates". Registering the device with the TomTom web site was a big hassle (I have an iMAC) but ultimately (after long wait, and being hung up on by the confused over the phone service rep) got to the page for registering for the lifetime serviceand it wouldn't accept the promotion code which accompanied the device!!!!!!! Frustrating as hell.
I've used my TomTom a few times since purchasing it, so not a lot of experience. It was most helpful on the road, but did have some street names and addresses that were in error. I had issues trying to get the lifetime maps code to activate - it took several tries with error messages to get it to take.
If this unit could be given 0 stars in all categories that is what I would get. I spent about 6 to 8 hours trying to get it to work. I have another TomTom but their desk top software will not handle two units so needed to use seperate e-mail addresses. Unit continued to give error message that there was a problem with the US Canada map.
One can do the twisting when turning the mount from unlock to lock position.The promotion code to activate the free lifetime map updates did not work out of box. The procedures on the activation process described on TomTom's web was not exactly happened to the device. But the on screen tips were intuitive enough to let one go through it. After going through the procedures, the device was indicated up-to-dated.
)Incidentally, Amazon has been great about the returns. I will update after receiving the unit directly from TomTom. In the meantime I would suggest not purchasing the XXL 540M from Amazon if you want to avoid frustrating  phone calls to TomTom customer support.Update:I am now on my fourth TomTom XXL540M. I have received the device directly from TomTom (rather than via Amazon). It has the same problem, after updating it tries to reboot and I then get a vertical scrolling of nonsense.
The TomTom XXL 540M works fine. I really like it. The suction cup mount for the windshield doesn't work at all. It came apart when I tried to use it and I can't get it back together. I wish TomTom made a better windshield suction cup that would be supplied with the unit. Other than that, it works great.
There was a glitch with the lifetime maps activation code during the product setup. I got an error message saying the code was valid but not compatible with this product. Once I contacted Tom Tom support, they assisted me in correcting the issue. It took a few days to sort it all out, but they were polite and apologized for the inconvenience. This was all handled via the support feature on the Tom Tom Home software. Apart from that, the rest of my experience with this product has been satisfactory.
Answer: Contact TomTom telephone support. I had the same issue. Got it resolved within 30 minutes - needed to scan in my BestBuy receipt and the Lifetime Maps card, and they manually activated my subscription. For some reason, TomTom forgot to enter our codes into their system, but there is a quick fix for that. Just call their number - it is available on your TomTom box.