For those with 5TH wheels
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Senior User
Joined: Jul 2016
Posts: 466
Likes: 2
Drive and ride are close to same.. fuel economy is less so far.. irritating fact: when you program in that you are hauling a 5th wheel it shuts off the rear side sensors so you get no Blindspot warning of cars beside the trailer......grrrrrrr.. this was one of the safety factors that I bought this truck for...
Senior User
Joined: Oct 2014
Posts: 167
Likes: 0
I had a feeling that BLIS wouldn't work with a 5th wheel. The sensors are in the taillights and the taillights are tucked in under the trailer. I guess that's one option I can leave off the next build since my truck has a 5th wheel behind it 90% of the time.
Posting Guru
Joined: Aug 2015
Posts: 2,399
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See page 252 on the user's manual via https://owner.ford.com/tools/account...017/Ford/F-350. It appears that you have to set the trailer as a bumper-pull 30' or shorter. If you tell the system that you have a gooseneck, 5th wheel, or bumper-pull over 30', it turns the BLIS off.
I've clearly spent too much time researching this truck - I haven't even decided what to order yet.
I've clearly spent too much time researching this truck - I haven't even decided what to order yet.
Senior User
Joined: Oct 2014
Posts: 167
Likes: 0
Yea, but if you trick the BLIS into working that way you might be constantly getting a false reading of someone in your blind spot since the sensors will be bouncing off the front of the trailer. I guess someone will need to test this theory.
Senior User
Joined: Sep 2012
Posts: 202
Likes: 0
Drive and ride are close to same.. fuel economy is less so far.. irritating fact: when you program in that you are hauling a 5th wheel it shuts off the rear side sensors so you get no Blindspot warning of cars beside the trailer......grrrrrrr.. this was one of the safety factors that I bought this truck for...
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Prolocutor
Joined: Jan 2009
Posts: 13,618
Likes: 1,245
From: Western MA
Personally, I HATE blind spot detection and deactivate it on every vehicle I buy. I'm glad it won't be active when I'm towing as I would have shut it off one way or the other. I prefer to drive my vehicles and disable or don't order any driver aids. Unfortunately, I will have to order BLIS to get the LED headlight pkg....
Senior User
Joined: Oct 2014
Posts: 167
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You sure about that? I just did a build and price for a loaded lariat ultimate and it didn't require the BLIS option to get the LED heads & tails.
Post Fiend
Joined: Apr 2004
Posts: 5,158
Likes: 35
From: North of Salt Lake City
My toy hauler regularly weighs in at 19,000 lbs (sometimes more). I have 6 inches between the bed rails and the trailer and I wouldn't want any less. There's just too many times when I've been off road where I've crept through dips and rises watching the tailgate come within an inch of contact.
The trailer's axles are already flipped and I have my B&W hitch on middle setting vertically. This has been a really good thing and has never been a problem. Yes, the ramp can be a little steep and the step can be a little high but the advantages of having the extra clearance are so great. I never worry about dragging and it's so nice to have the extra space when I'm crawling around underneath. I can almost sit up underneath when checking brakes.
The trailer's axles are already flipped and I have my B&W hitch on middle setting vertically. This has been a really good thing and has never been a problem. Yes, the ramp can be a little steep and the step can be a little high but the advantages of having the extra clearance are so great. I never worry about dragging and it's so nice to have the extra space when I'm crawling around underneath. I can almost sit up underneath when checking brakes.
Elder User
Joined: Aug 2006
Posts: 634
Likes: 2
Personally, I HATE blind spot detection and deactivate it on every vehicle I buy. I'm glad it won't be active when I'm towing as I would have shut it off one way or the other. I prefer to drive my vehicles and disable or don't order any driver aids. Unfortunately, I will have to order BLIS to get the LED headlight pkg....
Cargo Master
Joined: Dec 2003
Posts: 2,293
Likes: 2,045
From: Central MO
You have half as much pin weight as the total weight of my trailer. Dang, I must have a dinky little 32 footer!
No BLIS with a fifth wheel?! WTHeck? I was thinking that would be a nice feature.
No BLIS with a fifth wheel?! WTHeck? I was thinking that would be a nice feature.
Elder User
Joined: Aug 2016
Posts: 521
Likes: 1
I agree, WTH Ford!! I was wondering how that was going to work with the overhang of the 5th wheel being in the way of the tail lights.......
Prolocutor
Joined: Jan 2009
Posts: 13,618
Likes: 1,245
From: Western MA
Yes, I'm sure. What you didn't notice when you added the LED headlights to the build is that it automatically added BLIS. Watch the price jump and you will see it adds a lot more than the headlight upgrade cost. Then scroll up and notice that BLIS is now selected and marked as "included." The reason for this is that the LED tail lamps that come with the LED headlamp option include the BLIS radar. So to get one, you must get the other. This was discussed back when the order guide first came out...