Anyone else with Nav issues ?
Thread Starter
|
New User
Joined: Sep 2014
Posts: 6
Likes: 0
Anyone else with Nav issues ?
I recently purchased a new 2014 Lariat Screw with Nav and since last week the info is never correct. I have the latest software on the unit and it came with the latest A5 nav card but the vehicle is always showing way off of the road and as you drive longer eventually has you no where near where you actually are ( I mean miles off ). I have tied pulling the battery cable and removing and reinserting the SD card no luck.
I have master reset the unit a few times and Nav will work for about 5 minutes and then we are way off course according to the map again.
The only thing that changed around the same time as this is I took the stock wheels and tires off which were 20" and put on my after market wheels that are BFG AT tires but also 20" but the tires with ford TPMS installed are a bit bigger than the stock ones, but other than that the truck is bone stock no lifts or anything.
I just don't know if this is coincidence or will a very small change in tire size cause the nav to go that out of whack ?<!-- google_ad_section_end -->
I have master reset the unit a few times and Nav will work for about 5 minutes and then we are way off course according to the map again.
The only thing that changed around the same time as this is I took the stock wheels and tires off which were 20" and put on my after market wheels that are BFG AT tires but also 20" but the tires with ford TPMS installed are a bit bigger than the stock ones, but other than that the truck is bone stock no lifts or anything.
I just don't know if this is coincidence or will a very small change in tire size cause the nav to go that out of whack ?<!-- google_ad_section_end -->
Cargo Master
Joined: Jul 2009
Posts: 2,710
Likes: 77
From: Central Florida
Changing the tire size will have an impact on the GPS. The built in GPS uses multiple inputs to determine where you are on the map so that your GPS works going through tunnels and under bridges. Did you recalibrate your truck for the new tire size?
Cargo Master
Joined: Jul 2009
Posts: 2,710
Likes: 77
From: Central Florida
One of the inputs to the factory GPS is speed from your vehicle. If you change your tire size the speed will be off and that will cause issues for the GPS. The built in system uses a process called "dead reckoning". The idea is to keep the GPS accurate when there is a limited or no GPS signal.
Thread Starter
|
New User
Joined: Sep 2014
Posts: 6
Likes: 0
Just thought I would update this thread, last night I went out and disconnected my battery cable again and this time I left it off for 30 plus minutes and hooked things back up. Today I drove allot and the Nav was back perfect and dead on. I guess maybe the 15 mins I left it off last time was not enough. But it is back working for now.
Trending Topics
New User
Joined: Mar 2015
Posts: 16
Likes: 0
From: Central New York
Candidly, I think the best thing to do us spend the money on a 5-Star Tuner. You can put in changes to wheel size, changes to your rear end ratio, etc. Well, and take off that stupid speed restriction Ford puts on our truck. ;-( And you will also end up with a bit better performance and better gas mileage (1 or 2 mpg, more or less). But yeah - tire sizes will mess you up because the truck has to use that information or it won't know how far you went when you are in tunnels, out of range of at least 3 or 4 GPS satellites, etc.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Thread
Thread Starter
Forum
Replies
Last Post
tomstoner06
6.7L Power Stroke Diesel
4
Jul 3, 2015 01:01 PM