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check your satnav's status

Your satnav has always been there to guide you, now it needs your help.
On 6 April 2019, the GPS Week Number Rollover may impact your satnav. Please connect your satnav to your computer to check if you have the latest software version. If you do not already have MyDrive Connect or TomTom Home on your computer, we are here to guide you through the next steps. Get started by entering your serial number below.

Can’t find your serial number? What is the GPS Week Number Roll Over?

What is the GPS Week Number Rollover?

The GPS Week Number Rollover (WNRO) occurs every 19 years, with the next roll over taking place on 6 April 2019. Similar to odometers in older cars rolling over from 99,999 km to 0, the GPS WNRO is the resetting of the GPS calendar back to 0.

When the calendar resets, it can cause a miscommunication between GPS satellites and GPS receiver chips. As a result, some chips in satnavs will lose the ability to process certain functions.

What does this mean for you? It’s time to check your satnav. Depending on your device, you may need to update or upgrade.

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