How do I activate gps tomtom code 6CAAXSQLK74

You may not likely find/get the activation code(s) for your map(s) since your map versions are quite old ... current map versions are 920... Your other option is to purchase a current map from TomTom.
You can go to tomtom.com (and if you haven't registered your GPS device, register the GPS device (on tomtom.com) against your name, etc.,) and purchase a map (of your choice). With this purchase, you will download the map (software and data), and an activation code to validate the map. After that you should be able to use the GPS device (for the purchased maps).

google gpsunderground and find the tomtom section.

Follow the below mentioned steps to activate your device :
1
Connect your TomTom to your computer using its provided USB cable.
2
Press the "Yes" button on your TomTom's touchscreen when it asks if you'd like to connect your TomTom to your computer.
3
Open TomTom Home. Click "Start," choose "All Programs," find TomTom Home's folder and double-click its icon.
4
Click "Use my activation code."
5
Enter your activation code into the empty field next to "Your activation code."
6
Click "Next."
7
Wait while TomTom Home automatically uses the code your provided it.
In case of any further assistance please reply back.

Activation codes are included ONLY with a GPS that is bought BRAND NEW in its ORIGINAL TomTom box. Also, TomTom activation codes are SPECIFIC to your GPS serial number, so "any: activation code will not work.
Unfortunately, if you didn't buy your GPS new, or have the original TomTom box with all its contents, you can't get or use an activation code.

Here http://uk.support.tomtom.com/cgi-bin/tomtom_uk.cfg/php/enduser/std_alp.php

helo there"
here is a link that will help you activate your tomtom ok ?
best regards michael
TT Code - TomTom Product Activation. TomTom TT Code, the place to activate your TomTom products ... Activation de produit. Aide en Français. Produktaktivierung. Hilfe in Deutsch. Activacióe productos ...
www.ttcode.com - 5k - Cached

I need an Activation code for tomtom one europe maps product code is : AK5AL B2BS2

Im pretty sure that Tomtom provided what you needed, if you did buy the map...

Call TomTom support 1-866-486-6866 (www.tomtom.com) and they will help you pretty quickly with that problem.