Question about Tomtom ONE GPS Receiver

1 Answer

Touch pad seem to be out of calibration - when you touch anywhere on the screen, it highlights about 1/2 inch above where you are pointing - very hard to enter addresses etc.

Posted by on


1 Answer

  • Level 1:

    An expert who has achieved level 1.


    An expert that hasĀ over 10 points.


    An expert whose answer gotĀ voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 7 Answers

Not sure what tom tom you have but try this (found in a forum)

So I will give it a try to help sort out a friends TomTom.

Method valid for NavCore versions until 8.051.

A manual method to correct the calibration of the touchscreen input device of any all-in-one TomTom systems consists in creating a file called calib.txt (e.g., with notepad) and saving it in the main directory of the TomTom disk memory (e.g., the SD card; the same directory of the ttsystem file).

calib.txt should include one line with four numbers separated by a space: MaxX MinX MinY MaxY

Notice that the ‘x’ sequence (max, min) is inverted than the ‘y’ sequence (min, max). MaxX > MinX and MinY < MaxY.

For instance, the file can include:
928 118 107 912

Each TomTom device has its own most appropriate sequence.

In order to compile the file with default data, one method could be to perform a TomTom reset (or to eject the SD card), powering on the device and holding down the ON button for a few seconds until a unit status screen appears. The line named “Touchscreen calib. data:” will include four numbers that in sequence represent MinX MaxX MinY MaxY; these numbers can be used to fill the configuration line of calib.txt remembering to swap the first two ones. For example, if the unit status screen returns 118 928 107 912, calib.txt has to be saved with 928 118 107 912.

Tuning can then be done by adjusting these numbers until the touchscreen is calibrated. Distortions like screen rotation, trapezium and rhombus correction cannot be achieved with this method even if tuning these parameters can provide an acceptable touchscreen management even in presence of distortions; the best screen to tune the calibration is exploiting the soft keyboard of the NavCore application.

For instance, in my old TomTom GO Classic device I realized that, after activating the NavCore soft keyboard, when moving vertically (Y axis) the cursor appeared calibrated, while the horizontal movements (X axis) prevented to manage the left and right key columns (especially in the left bottom corner positions). So, I left the last two digits unaltered and, after some tests, I successfully used the following values: 805 200 107 912.

Method valid for NavCore versions post 8.051.

For NavCore versions 8.2x and 8.3x, use the same method as mentioned above, with these small differences:
the file should be named cal.txt (and not calib.txt) and should again be positioned in the main directory of the SD (or HD) drive of the TomTom system (e.g., the same directory where ttsystem can be found). Besides, the four numbers included in the file should have a different sequence than what previously described for versions until 8.51; cal.txt shall include the following sequence: MaxX MinX MaxY MinY (notice that also MaxY precedes MinY).

For instance, cal.txt could include the following four digits: 928 118 912 107

Again, these numbers are specific of each TomTom single unit.

E.g., my TomTom GO Classic correctly runs 840 245 912 107.

Posted on May 19, 2009


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Htc prophet touch screen issue

for window phones
1. Press the "Home" key and press "Start." Use the directional pad to highlight "Settings," then press the center or "Enter" button.
2. Use the directional pad to select the System tab. Select "Screen," then press the center or "Enter" button. Select "Align Screen."
3. Using your smartphone's stylus, tap the crosshairs as they appear on your screen. Do this for as many as appear, until the calibration tool finishes. Your screen is now properly calibrated.
for Android phone
4. Press the "Home" button or capacitive area, then press "Menu." Tap "Settings."
5. Tap "Language and keyboard." Tap "Keyboard settings." Tap "Tutorial" and go through the steps that appear on your screen.
6. Once this is finished, turn your phone off and on again. Your keyboard has been adjusted, which activates a re-calibration of the capacitive touchscreen. (Capacitive screens are technically far more accurate that resistive, and so a full calibration tool is not included with Android phones.)

Aug 20, 2012 | imate JAMin Smartphone

1 Answer

Canon iR C3380 touch screen seem to have shifted, anyway i can re-calibrate the touch screen?


Jul 27, 2012 | Canon Office Equipment & Supplies

1 Answer

Ricoh Aficio 3025 Copier LCD Touch Screen out of Allignment

It's not in service mode, but rather in the 'self diagnostic menu'. Access it as follows:
Press "clear modes", 1 9 9 3, "clear/stop" (5 times).

** Do not try any other adjustments in this mode...only touch screen

please rate me :)

Apr 10, 2009 | Ricoh Office Equipment & Supplies

3 Answers

Touch screen calibration

Touch screen not working for sony ericsson P990i Mobile phone

When I hit the center some part above gets highlighted and selected and the botton part where the taskmanager and battery icons are present does not respond to my taps ... what could be the problem,,, kindly help me solve the issue.


Aug 24, 2007 | Sony Ericsson P990i Cellular Phone

Not finding what you are looking for?
Tomtom ONE GPS Receiver Logo

1,246 people viewed this question

Ask a Question

Usually answered in minutes!

Top Tomtom GPS Experts


Level 3 Expert

76846 Answers

Martin Murray

Level 3 Expert

1623 Answers

Jon Piercy

Level 2 Expert

67 Answers

Are you a Tomtom GPS Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides