Sorry if this is a repeat thread...

I recently acquired a new 2015 f-550 service truck as my work truck (company truck) from what I can tell it is classified as a 2015 model truck with a build date of May 14 2014.

My question is that when I enter engineering test mode it shows me the light on the dash for the exhaust brake, however I do not have the button next to the cigarette lighter plug to turn it on. I'm guessing that this truck was probably ordered with out the exhaust brake option. I know that the earlier 6.7's have some semblance of an engine brake while in tow/haul mode, but does mine work the same way? Or would this have to have been ordered with the exhaust brake option? If it is a 2015 could I add the exhaust brake option to the truck after the fact?

 

I thought the exhaust brake was standard for all diesel pickups.

I'm not sure if the exhaust brake is available/standard on cab/chassis trucks. Sounds to me like you have a 2014 truck, or, it's a 2015 cab/chassis without the exhaust brake.

 

I may be mistaken, but my understanding is that the c & c trucks for 2015 would still have the 2011/14 turbo. So they could not have the new exhaust brake function.

 

I just got my 2015 F250 4X4 crew cab short bed Just in time for Christmas Thanks to my wife. Being new to diesel (all my Fords up until now were V10sor light duty) I'm reading the own's manual but that's going to take time. Someone ask me about the exhaust brake button I told them I'm not sure now it works. So what is it intented for?

 

In the 11-14 trucks, the exhaust brake was only activated while in tow/haul mode.

As far as I know, that button on the 15+ trucks allows you to activate the exhaust brake independently of Tow/Haul.

If you're a complete newbie to the theory, turbochargers can be setup to act like a big anchor on the motor, when you're off the throttle. It vastly enhances the truck's decal rate, very useful when towing or hauling big/heavy loads.

Next time you go for a drive, turn it on to familiarize yourself with its function

 

The 2015 does indeed have the old turbo design and is also derated to 300 hp and 660 tq. So, it has the transmission based engine braking that is activated through tow haul but not an actual exhaust brake and dash mounted button like the 2015 pickup based super duty line. The two lines share a dash pod which is why the indicator is there but it isn't functional...

 

Every hear an 19 wheeler as it slows down it make a big noise. That is the jake brake.


another name for an engine brake.


Kind of what you can expect but to a lesser degree. A jake brake will retard the timing while in Fords application you use the turbo and transmission to help slow down.