Jumping from the planned route

Change Settings > Route Planning > Default Route Type

Re From Walking mode to driving mode

It will tell you when you have missed a turning on a planned route.
If your breaking the speed limit. Define wrong

battery or screen is faulty and needs replacing.

www.compu-sat.co.uk

Hello mate i have the same sat-nav, but not your problems, turn of the unit remove the sd card, reset the unit and turn it back on and then insert the sd card and see what happens, Do you have computer software for it so you can connect to the internet to download updates?

You could try updating twith the latest software using Tomtom Home or try cleaning the touchscreen with a lint-free cloth

Use Itinerary planning, and save it as a route, not as a fav...

you might of got water in it

I had this problem. There was a problem with the direction of a one-way street leading to my destination. I corrected it and then I could plan the route. Check the streets leading to your destination against a real map and correct ht e directoin where necessary.

Same Here

It is possible that you have the TomTom set for "walking routes" or "bicycle routes" or "limited speed." (I have a TomTom One 3rd edition, so if you have a different model the menus/icons may be different, but it's worth a shot.)

Click on the main part of the screen, while on the main navigation screen. Then click on "Change preferences." Then click the blue arrow to scroll to the Preferences 3 of 5 page. Click on "Planning preferences." Choose the planning preferences that you want. Hope this helps...