Lost Brakes on R NOW

[KentSD]

I have a 22 Raptor with 37s, and a 23 R

Both trucks have lost brakes many times. Oddly the 37 and the R lost the brakes at almost the exact same spot to the foot @ mile 550 on a 1000 miles trip.

The root cause is the Wash board roads is freaking out the braking system. When I mean no brakes, I mean the pedal hits the floor and every alarm is going off. And you must disconnect the negative battery for 20 min to reset the computer.


Bottom line is the trucks computers do not like Washboard roads. Both trucks have same issue. Even reset the same issue happens within 5-10 miles of it.

Ford WTF

 

[FordTechOne]

It sounds like it’s going into an ABS event due to the washboard surface. ABS operation strategy changes based on drive mode, which one are you using when it occurs?

 

[KentSD]

Baja Mode in 2WD

Its also happened in Sport mode 2WD

 

[dsiggi]

We run a lot of Gen 2's out west through some crazy washboard and have never had this happen. Interesting its happening in a Gen 3

 

[smurfslayer]

Yeah, I don’t remember; did you have brake issues in your Jen Too?

Ford Performance really should be paying you QA money.

 

[boredm]

soo...what speed are you going when you encounter this and how do you end up stopping?

 

[1966 F100 Raptor]

I have a 22 Raptor with 37s, and a 23 R

Both trucks have lost brakes many times. Oddly the 37 and the R lost the brakes at almost the exact same spot to the foot @ mile 550 on a 1000 miles trip.

The root cause is the Wash board roads is freaking out the braking system. When I mean no brakes, I mean the pedal hits the floor and every alarm is going off. And you must disconnect the negative battery for 20 min to reset the computer.


Bottom line is the trucks computers do not like Washboard roads. Both trucks have same issue. Even reset the same issue happens within 5-10 miles of it.

Ford WTF

Since default mode for Baja mode is 4x4 I did not think Baja mode was avail in 4x2?
What was road surface? was this rough blacktop or dirt?

 

[1966 F100 Raptor]

mile 550 on a 1000 mile trip doesn't sound like dirt
No fault of truck. Operator error in my book.

BAJA - RAPTOR​

For high speed off-road driving. Baja mode optimizes the throttle control for better response and torque delivery.
Four-wheel drive high is the default four-wheel drive mode. Four-wheel drive auto is not available in baja mode.
Off-road is the default steering and suspension modes. All steering and suspension modes are available.
Baja is the default exhaust mode. All exhaust modes are available.
The system tunes the engine and transmission controls to baja mode.
The system tunes the stability and traction controls to baja mode.
The electronic locking differential is available at all speeds in four-wheel drive. See Switching the Electronic Locking Differential On and Off - 4x4.
Note: Using baja mode on dry, hard surfaces could produce some vibration, driveline bind up, and potential excessive tire and vehicle wear depending on the four-wheel drive mode selection.

 

[dsiggi]

Since default mode for Baja mode is 4x4 I did not think Baja mode was avail in 4x2?
What was road surface? was this rough blacktop or dirt?

You can go to Baja then switch to 2wd

 

[KentSD]

Never happened on Gen2

As for what am I doing to prepare for it when it happens each time. Pump the brakes as fast as I can to get even a little pressure and downshift slowly, only 1 of the times I had to power out of the turn and it worked but I dont feel like doing that when im solo on most my trips