Quote:
Originally Posted by Alfred
I finally found an explanation why the SATNAV was showing 2% low speed.
The speed shown on the SATNAV is NOT a GPS calculated speed, it is from the car's speed sensor. I found out when the SATNAV got the time stuffed and refused to find any satellites and this had no effect on the speed displayed on the SATNAV.
Alfred
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Well, that's interesting to know, because mine is definitely out. The speedo is just about spot on, but the GPS is out around 3-4%. This might have something to do with slightly bigger tyres? I checked this by putting my portable GPS from the TJ in the XH and running them both at the same time.