2017 factory brake controller

[Black]

Double check the part number stickers on your engine coolant and oil radiators. The HD Tow option is so common on these trucks they may already on the truck.

-- Chuck

Easy to tell just look and see if you have the transcooler mounted in front of the radiator.
If you have the cooler you have the HD package if not you don’t and you’ll want upgrade to the the HD radiator and aux trans cooler.

 

[chuck s]

There used to be two transmission radiator sizes. Regular and HD. Never seen the smaller one though. The HD engine coolant radiator is definitely thicker.

-- Chuck

 

[Expy00]

I will check the radiator but there is no xmission oil cooler.
There was no brake controller or 7 pin connector. All three items are in the HD tow package.
Here is the list of mechanical equipment. Is the 1600# payload or 7,760 GVWR standard or an upgrade?

• 1600# Maximum Payload
• 250 Amp Alternator
• 34 Gal. Fuel Tank
• 4-Wheel Disc Brakes w/4-Wheel ABS, Front And Rear Vented Discs, Brake Assist, Hill Descent Control and Hill Hold Control
• 72-Amp/Hr 650CCA Maintenance-Free Battery w/Run Down Protection
• Auto Locking Hubs
• Class IV Towing Equipment -inc: Harness, Hitch and Trailer Sway Control
• Double Wishbone Front Suspension w/Coil Springs
• Electric Power-Assist Speed-Sensing Steering
• Electronic Transfer Case
• Engine: 3.5L EcoBoost V6
• Front And Rear Anti-Roll Bars
• GVWR: 7,760 lbs Payload Package
• Gas-Pressurized Shock Absorbers
• Limited Slip w/3.73 Axle Ratio
• Multi-Link Rear Suspension w/Coil Springs
• Part And Full-Time Four-Wheel Drive
• Single Stainless Steel Exhaust w/Chrome Tailpipe Finisher
• Transmission w/Driver Selectable Mode
• Transmission: 6-Speed Automatic w/SelectShift

 

[Expy00]

Easy to tell just look and see if you have the transcooler mounted in front of the radiator.
If you have the cooler you have the HD package if not you don’t and you’ll want upgrade to the the HD radiator and aux trans cooler.

I am planning to put the Ford auxiliary transmission cooler in the truck. Does the factory package have the transmission fluid going thru the radiator then the aux cooler or does the aux cooler stand alone?
On of the exploded parts views looks like it is the only cooling method of transmission fluid.

 

[chuck s]

Is the 1600# payload or 7,760 GVWR standard or an upgrade?

I'm think it's standard for the EX frame and suspension as my short wheelbase '17 has a 1416# max payload and a 7500# GVWR. I have the factory HD Tow package and suspect the payload and GVWR do not change with that option as there are no suspension parts I can see in the option list.

 

[Expy00]

I'm think it's standard for the EX frame and suspension

View attachment 28917

Thanks. My radiator is tagged CL34-8005BA 17175 D1 and Stamped B281H Made in USA
From what I have found of Ford part numbers the standard Rad is BL3Z-8005-B
and with the HDTPkg the Radiator is BL3Z-8005-C
So I don't think the Radiator is the same as the Heavy Duty Tow Package Radiator

 

[Black]

I am planning to put the Ford auxiliary transmission cooler in the truck. Does the factory package have the transmission fluid going thru the radiator then the aux cooler or does the aux cooler stand alone?
On of the exploded parts views looks like it is the only cooling method of transmission fluid.

My understanding is that it is cooled by the radiator. I have not been down and followed any lines.
I don’t tow a whole lot but the better cooling you can get is always a plus.
I will be doing the radiator at a minimum. The bracket is there for the cooler as well so one should just need the radiator, cooler, and cooler lines and it SHOULD be that simple. But I have not had a chance to get in there and verify.

 

[Langer]

Expy00, did you ever put the auxiliary transmission cooler in? I’ve been following a lot of these threads but haven’t read someone that’s done it. I looked on parts.ford.com and fordpartsgiant.com and think I have the correct part, but wanted to double check. It’s a bit more expensive than what I’ve seen people talking about for an auxiliary cooler from both sites. Does anyone have part number(s)? Is there a kit somewhere or do I need to buy each individual part listed?

 

[HandyAZ]

This has been such a great thread and thank you for all of the great info. I just purchased a 2017 Expedition without the upgraded tow package (does already have the Class IV Hitch) and I'm going to follow the steps to put in the factory brake controller. My question is this... Do I need to get a full "Universal Kit" to convert the 4 pin to a 7 pin that has all the 10 guage wire (https://www.etrailer.com/p-ETBC7.html) or can I simply get the adapter and find the capped blue wire that MAY be in the rear of the Expedition already? https://www.etrailer.com/Wiring/Mig...MIxPb9sufL4gIVjcpkCh2paQCnEAQYASABEgK6OvD_BwE

Where would I find the blue wire to tie into? Is it near the rear tail light or somewhere else?

 

[chuck s]

I don't know if that's the right "kit" but you want all seven wires. Not looked but I've been assured the Blue (brake) wire is back there "blunt cut, dipped, and taped." Manufacturing economies and automated assembly literally demand all the wiring for any accessory is on the vehicle so no special wiring needs to be added. Borrow a trailer connection tester or check all the connections with a 12v test light.

Reminder: there are fuses and relays that need to be connected in the front fuse box.

As an aside (but related) I had a new roof installed on my Honda S2000 over the weekend which requires much of the interior to come out. Found the wiring harness for the CD changer that will mount in the trunk was there. Alas, no changer, but all the wiring is there.

-- Chuck