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Hello, The service brakes are meant to be a supplement to the engine braking effect. Just bringing this up for future videos you might make.

The most garbage trash option in the truck industry so if u looking for job and garbages companies with this shit big hell no red flag do not apply

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seems like they looked and looked for the better engine for this documenery.theres just no way to know if that was actual milage.

This was very helpful thank you Sincerely A Muther Trucker

Why ruin a good motor

This is TRASH. Its dangerous to say the least. Almost had several accidents because of it. It makes the roads less safe and makes driving a truck a nightmare. It blocks the truck from starting when you really need to move and people will be backing up thinking you can move and this trash puts blocks the starter. It puts everyone on the road including you in danger. Adaptive cruise is TRASH. CMS doesnt work in fog or rain and the cruise control causes you to be late because it does not tell you it slowed down for no reason which costs truckers a lot of money that they don't have! The beaping makes you want to throw the whole truck off the side of a mountain. The collision mitigation system has NO business in a CMV that's 80,000 pounds heavy. This crap will stomp on the brakes when someone is getting off the highway in a different lane throwing you out of your seat and making the person behind you go crazy trying to avoid crashing into the back of you. They make faces like you stomped on the brakes. Then it will make you fight the software for 14 hours a day bc it thinks every highway sign is too low and it thinks you are heading for a collision but you fight the jerking and computer hitting the brakes while people are zig zagging all around you. This software is a nightmare to say the very very least and it is a big reason so many drivers threw the keys at their dispatchers and QUIT! This software should have never been installed in any 18 wheeler it is not ready for the road and next time you full on dummies in lab coats think you know how to keep drivers safe go slap yourself. You need real drivers that take on mountains and work primarily over the road with real opinions that are not people pleasers to tell you the truth about this crap you make. So many people crashed lost their loads or ran off the road because of this trash. Shame on DOT, FMCSA, OSHA, NTSB, all of yall need to be fired. You put our lives at risk with this unproven trash. It makes so much noise. You stuck in an echo chamber under stress will loud beeping for 10 hours and tell me if this is still a good idea. You tell me why it beeps through construction zones that have lines all over the road, beeps cause they have a black dirt line in concrete and the truck doesn't understand you're not over the line or it goes nuts on a curve thinking you're hitting a wall. It's trash! It should have NEVER made it into an actual truck on actual roads with real people. Shame on you for what you make us do on a daily to keep from being keeled on these streets from your not so "safe" technology. IT'S TRASH. We deserve better. We deserve a day without this forced garbage making a hard job 10x worse and 10x harder and 10x LESSSSS SAFE.

The problem with my NEW 2024 Cascadia is that when it has already been running Optimized Idle, it will frequently give a “Safety Loop Fault, Key Cycle Required” dash message when it was already running Optimized Idle but the engine was off for awhile after reaching the desired temp in the sleeper berth.

I thought mine wasn’t working and had to do it backwards . Meaning I set the idle first and then turn on cruise control and it works . Took me forever to figure this out . If your light isn’t coming on drivers, just idle it high first THEN press the cruise control button

worth watching....every trucker needs to watch it with sure❤

In Phoenix now at triple digits temperatures mine does not work, I did everything in this video but the ‘comfort mode’ option does not come up on the screen, it automatically sends me to the screen that says ‘enable opti idle/engine may stop/start running. Once I pushed OK works for a few hours and then it stops. I just woke up all sweaty and this crap does not work. Any ideas?

The DT12 is a great transmission but they need to take away the option to disable the manual mode. It's not saving any fuel when climbing a mountain and is downright dangerous coming back down.

The DT12 is a great transmission but they need to take away the option to disable the manual mode. It's not saving any fuel when climbing a mountain and is downright dangerous coming back down.

The DT12 is a great transmission but they need to take away the option to disable manual mode. It's not saving any fuel when climbing a mountain and is downright dangerous coming back down.

Forgot to take mine off one day, went a good hour doing 70 before I realized

The lane departure is the most annoying thing drivers have to deal with. It’s just a waste of time and money which consumers have to pay for.

Stop 🛑 😂it

total hazard and distraction

Just because it’s that clean on the video doesn’t mean there’s no leaks. Maybe that driver who brought the truck in pressure washed the engine really good since he knew they were going to be working on it.

I think you can drive for extended periods with diff lock on, as long as you aredoing it with appropriate speed

This motor is an over engineered hot steaming pile of garbage. Every new generation of Detroit engines, is just a further example of the quality is not longer existent. The 60 Series was the ideal motor for decades. Good power, good fuel economy, reliable, and maintenance cost was low. Now it’s a joke.

Man those Cascadias look like the flashest pieces of shit around.

Worst invention ever useless.

Cheap plastics made in mexico

I genuinely wish you guys would share where the hood sensor is. My truck gets kicked out of Opti-Idle due to Safety Loop Fault, it think the hood is open. This is a genuinely dangerous situation in the summer heat.

It is One of the most frustrating most irritating Features ever developed on a semi truck. It causes other drivers to think that you're playing games and not letting them pass you at times Because it will randomly start to accelerate and then other times they pass you only for you to pass them a mile down the road. Four, you will go to past them and all of a sudden. It disengages and you go back into coast mode So then everybody behind you has to slow down with you. It causes way more passing and interactions between vehicles. And so to get around it, what you end up having to do is turn your cruise control off. And just use your right foot for hours and hour and an hours every single day. It basically defeats the purpose of having cruise control on in the first place.

SCR closed loop. These engines are a waste of money and time!

Mine doesn’t do that. I do all those steps and it doesn’t turn on when it should.

The DD15 is a pile of overcomplicated, overengineered, and overpriced crap. Get a cummins big cam 3 engine. It's far more reliable and way cheaper to fix.

didnt even *SHOW HOW*

Did a cylinder head on a 2008 with 1.7M kms as the intake temp sensor had failed and a piece got stuck in intake valve and burnt it and while we were at it pulled oil pan to check bottom end and replace pick up oil seals and it looked exactly like this does, oil changes every 20K probably helps and it runs on Delvac Full Protection 15w40 fyi

WAHTS WRONG WITH THE AD ? KEEPS REPLAYING

Release the parts for it, and the schematics too.

More like your assurance is more dangerous. It goes off randomly. Mine says collision warning with nothing in front of me. Just put it back to where the driver had control.

Liner in my number 5 cylinder went out...

I agree ... what a crappy system .. mine failed to start in the -45 weather gave me the message key cycle required ... when cycled .. it just clicked ... nuthing ... damb near froze to death ... sounded like starter was stuck .. so i banged it and crossed the conections and it started ... junk snd yes ... zero sleep every time this thing starts ..

Can I install on 3.0 Sierra Denali dura Max 3.0?

Why didn't you manufacturers have the brains, and balls, to stand up against the government regulations for these stupid emissions controls? They are creating more emissions than they are saving. Do the math and you will see the answer. Added truck cost, added fuel cost, added DEF cost, added repair cost, downtime? They are pushing the ICE up to make Electric look like an option. Get your head out of the clouds and back to reality. You are not solving anything. We are not going electric any time soon!

I would rather have a broke down 12.7 than a new dd15

This is pure gold 😂 going to play this full blast in my cascadia 🤌🏾

Hello master. I have truck freightliner cascadia dd15. The truck have 715000 miles. I change crankcase breather. It was leaking. But smoke come out only from breather ? Please and advise for me Thanks and advance

There ain't no fuel economy in these worthless trucks. What yall did was made these trucks into transvestites you cut the balls off and made the d into a vag. These new trucks suck worse than the old ones.

If it was so good why'd they change everything in 2018 and mess it all up?

How did they maintain this engine?

👎👎 not helping

More "safety" and "fuel saving" options nobody wants nor asked for. It's just designed to enrage the driver

Come on! Why that LONG ad in the beginning that I can't bypass!

This is the biggest bullshit story. They all leak. Shit gos wrong all the time

Or how to blow up an engine early. If you keep the RPMs below 1500 at all times a DD15 engine can go further than 1.2 million miles, that is if you properly maintain your power train.