Toestellen op Android 12 kunnen momenteel niet verbinden met onze app. Wij lossen dit z.s.m. op. Excuses voor het ongemak. 


Mounting and installation

Before installing, it is important to check the Bluetooth range of the E-Connect. The signal can travel up to 10m if it is not obstructed. As soon as sensors are installed outside the caravan (E-Gaslevel, E-Load, E-Pressure), it is important to check whether the E-Connect is mounted in the best location in the vehicle. Read more about this on the E-Connect installation page.

Are you installing the E-Pressure for more than 2 wheels? Find out what to do here.


  1. Open the E-Trailer app and log in with your account.
  2. Make sure that Bluetooth on the smartphone is on and that you have a stable internet connection.
  3. Connect with the E-Connect.
  4. Always check for updates for your system. Click here for more information on Updating.
  5. Screw the supplied anti-theft nuts on the valves.
  6. Open the box of the E-Pressure and take out the white QR-Code card.
  7. In the app, click on ‘+‘ at the bottom right to add the module.
  8. Follow the steps as indicated in the app.
    NB Do not turn the sensors on the wheel until prompted to do so in the app!
  9. Finally, tighten the anti-theft nut against the sensor. Use the spanner supplied or a standard spanner 10.

Installation with more than 2 wheels

In case of more than 2 wheels, first scan all QR code cards before continuing with step 7 and turning the sensors on the wheels. Up to 10 sensors can be linked in the app (i.e. 5 QR code cards).


  • Screw the sensors onto the wheels in the order shown in the app.
  • If a wheel remains orange, either the battery is flat or the sensor may be out of range of the E-Connect (>10 m).
  • Try another sensor first to assess whether the battery is empty. When a sensor is screwed onto a wheel and a previous wheel turns green, this means that the last sensor screwed on is read.
  • The system does not look at where the sensor is. It records the order in which they are screwed onto the valves.
  • When all the sensors are screwed on the wheels, drive for 10 minutes to check if the values are updated.
  • If a value is printed in italics and the text is greyed out, it has not yet been updated. Only when the figures are normal and white is the value updated.
  • If not all values are updated, move the E-Connect slightly in the direction of the wheel which does not show an updated value.

There is something wrong with the QR code

Can’t scan the QR code?

It may be that you have not yet authorised the E-Trailer app to use the phone’s camera. Turn on this permission on your phone.

You receive the message QR code invalid?

You have scanned the QR code to add your product in the app and you get a notification that something went wrong. There may be a few reasons for this:

  1. You have already scanned your QR code. Then the module is has already been added to your account. Go to the main screen of the app.
    Is your module in there? Then click on it and follow the calibration steps.
  2. If you want to reinstall your modules, you do not need to scan your QR code again. Then go to the module’s settings, select General tab and click on Unlink all sensors and install again.
  3. The QR code is not known in the database. At that point you contact us.
  4. If you bought your system second hand, the module may still be in the previous owner’s account. In that case, please contact us.

Update software

You may need to update the software on the E-Connect or your app may be out of date. See how to update your system on the Updating page.

Reset & recalibrate

If you see strange values, or you have removed the E-Pressures from all wheels and the sensor no longer matches the wheel, you can reset these modules as follows. You do not need a QR code!

  1. Ensure that you are connected to the E-Connect via Bluetooth.
  2. Make sure you have a stable internet connection if you want to recalibrate the sensors.
  3. Go to settings of the E-Pressure module.
  4. Click in the General tab and click on Unlink all sensors and install again.
    This disconnects all paired E-Pressure sensors. Make sure you have a stable internet connection if you want to recalibrate the sensors. 
  5. Then follow the steps in the app.

The picture of my vehicle is not correct

This can be adjusted in the general settings.

  1. Ensure that you are connected to the E-Connect via Bluetooth.
  2. Go to the main screen of the app.
  3. Click on settings at the bottom left.
  4. Scroll down and click on Change vehicle type.
  5. Select the correct vehicle type.