Escort Radar Forum  

Go Back   Escort Radar Forum > Windshield Radar Detectors > Passport iQ

Notices

 
 
Thread Tools Search this Thread Display Modes
  #11  
Old January 18th, 2011
EscortRadar's Avatar
EscortRadar EscortRadar is offline
Official Escort Rep
 
Join Date: Apr 2009
Posts: 16,153
Default

I have confirmed that the KPH and MPH readings of the iQ are accurate. It is converting KPH to MPH correctly. Changes in the tire's outside diameter will effect your vehicle's speedometer readings. GPS based speedometers are generally more accurate than a vehicle's speedometer because they use a common and very accurate frame of reference (GPS satellite signals) to determine your speed. I have seen as much as 5 MPH difference at highways speeds in vehicles that I have used our GPS products in.
__________________

Escort Radar customer service is available from 9am-5:30pm Eastern Time Mon-Fri at 1-800-543-1608 or by live chat
  #12  
Old January 18th, 2011
g0nY g0nY is offline
Junior Member
 
Join Date: Jan 2011
Posts: 13
Default

I compared it to readings from my other GPS and they're they same so something must be right. Will be interesting to see what readings I'm getting with my summer rubbers.
  #13  
Old January 18th, 2011
barryswanson's Avatar
barryswanson barryswanson is offline
Senior Member
 
Join Date: Jan 2010
Posts: 144
Default

All the cars I've had over the years all display about 5 kmph more than any GPS device I have. I think it keeps the automobile industry on the safe side incase of people wanting to file law suites against them for speeding infringments or something like that. Well thats my theory anyway
  #14  
Old March 14th, 2011
Donkey Donkey is offline
Junior Member
 
Join Date: Mar 2011
Posts: 17
Default

My IQ does not read the MPH when I'm off the main road either, along with a long list of problems. From my understanding the IQ gets its speed from GPS. To me it should work if you are in the middle of the desert. My garmin works just fine when i'm off the beaten path.
  #15  
Old March 15th, 2011
EscortRadar's Avatar
EscortRadar EscortRadar is offline
Official Escort Rep
 
Join Date: Apr 2009
Posts: 16,153
Default

That is known limitation of the iQ. It references the map data for your speed. When you are off a mapped street your speed is no longer shown.
__________________

Escort Radar customer service is available from 9am-5:30pm Eastern Time Mon-Fri at 1-800-543-1608 or by live chat
  #16  
Old March 16th, 2011
Donkey Donkey is offline
Junior Member
 
Join Date: Mar 2011
Posts: 17
Default

Just curious where would someone find these list of limitations? There is no mention of anything of the sort on anything I have read.
  #17  
Old August 18th, 2012
POwsianyk POwsianyk is offline
Junior Member
 
Join Date: Aug 2012
Posts: 20
Default

I am finding that when using metric units the actual speed traveling is correct, but posted speed limits and milage in kilometers is not. Also the ETA to destination is off because of the milage difference. As I had mentioned in my posting, I have compaired my Passport IQ to a Rand McNally (RV unit) that also has Navteq on board. Escort should definately investigate this more. Escort could contact me if they want someone in Canada to help test out some modification they have to correct the incorrect speed issues.
  #18  
Old February 3rd, 2013
POwsianyk POwsianyk is offline
Junior Member
 
Join Date: Aug 2012
Posts: 20
Default

I just got my IQ back from repair and Escort did the map update. It did not correct the Canadian Speed limit problems.
 

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 07:16 AM.


Powered by vBulletin® Version 3.8.1
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
Copyright 2018 Escort Inc.