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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. We are here to help you check and guide you through next steps. Get started below.

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

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Please select your satnav below.

If your TomTom satnav is not listed here, it is not impacted and no further action is needed.

Renault Carminat
Renault R-Link
SMART Media System

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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