Front Sensor Faulting.

Topic 26493 | Page 1

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Bingo's Comment
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My coach doesn't know why it happens, and I am working on theories, but I am wondering if it happens to others. The issue is this: the sensor that tells you how far a vehicle is in front of you and how fast they are traveling is quite frequently saying that there is a vehicle 0 ft in front with 0 secs following distance going the same speed you are. It pops up the yellow warning message and makes a beep, covering the little information display and annoying the heck out of you because it is doing it so much. I have had it in a constant state of fault for hours on end, beeping and showing the message every 15-20 seconds. To top this off, it also sometimes sets off the collision alert when there is nobody in front of you and if you are just starting to pull forward, it will lock the brakes on you and you have to start again and again until it stops and you can get moving. It also once had a collision alert when I was going over 50mph and automatically did a hard brake for a second or two (very dangerous).

I keep the sensor cover well cleaned and I have noticed it tends to act up most in more populated areas. Driving I-5 through California is when it is the worst. I have wondered about possible signal interference? Are bumps shaking things loose? Is anyone else having this issue? (Coach's truck is a 2020 cascadia btw.)

OWI:

Operating While Intoxicated

OOS:

When a violation by either a driver or company is confirmed, an out-of-service order removes either the driver or the vehicle from the roadway until the violation is corrected.

Bobcat_Bob's Comment
member avatar

Is this a on guard system? I had a 2020 Casscida with the On Guard that has been in the shop for 3 weeks with a similar problem. Infact we have had a lot of 2020s have had problems with it.

You guys need to get it looked at ASAP especially since it is applying the brakes.

SAP:

Substance Abuse Professional

The Substance Abuse Professional (SAP) is a person who evaluates employees who have violated a DOT drug and alcohol program regulation and makes recommendations concerning education, treatment, follow-up testing, and aftercare.

Bingo's Comment
member avatar

I'm not sure what the system name is. Glad I won't be driving it through the winter, think they are most likely to stick a newbie in an older rig when they go solo.

Bobcat_Bob's Comment
member avatar

0853856001567903656.jpg

Is it mounted to the dash like this?

Or is it built into the dash?

Bingo's Comment
member avatar

Built in. It comes up on the center screen in the middle of the gauges.

LDRSHIP's Comment
member avatar

It is called: Assurance. It is Freightliners in house take on the On Guard system. I agree you need to get the truck into a shop to get fixed before it causes an accident.

midnight fox's Comment
member avatar

To top this off, it also sometimes sets off the collision alert when there is nobody in front of you and if you are just starting to pull forward, it will lock the brakes on you and you have to start again and again until it stops and you can get moving. It also once had a collision alert when I was going over 50mph and automatically did a hard brake for a second or two (very dangerous).

As point of reference for someone preparing to drive, isn't it incredibly irresponsible towards the lives of others on the road to keep driving a truck that has malfunctioned so dangerously?

wtf.gif

Robert D. (Raptor)'s Comment
member avatar

It's not just the 2020 that does it. My 2019 also has the same issues. Have had in the shop at 2 terminals and also at Freightliner itself. They say it's normal.I said it's not normal for the tractor to call collision when nothing is there. Freightliner did adjust the sensor down a little, but it still does it. Plus it has that annoying distance warning when I'm at least 400 ft away. So you are not alone. If it were my owned tractor, that would be disconnected. I think I can judge how close I am to another vehicle. I don't need a babysitter. But it's not mine so I have to live with it.

Just my experience with this problem.

Raptor

Terminal:

A facility where trucking companies operate out of, or their "home base" if you will. A lot of major companies have multiple terminals around the country which usually consist of the main office building, a drop lot for trailers, and sometimes a repair shop and wash facilities.

Susan D. 's Comment
member avatar

I've had this problem in my 2019 Cascadia several different times. Your collision avoidance sensors need to be recalibrated. Fun stuff lol and a complete PITA when it malfunctions. Quick and easy fix though.

I've also had my air alarm sensor go bad where the low alarm would sound constantly even though the air was perfectly fine. Stop and set the brakes and the alarm noise would stop. It was like mental torture when it did that. A freightliner dealer replaced it as it's a warranty issue. Several trucks at my company have had both of these sensor problems.

Drew Oswalt's Comment
member avatar

Collision alert came on many times on my trainers '20 Cascadia. Shadows under bridges and the big/round traffic "cones" would activate the sensor, but not the brakes.

On my '16 Cascadia Evolution, it came on 3 times yesterday (first day after upgrading), with nothing there. No shadows, cones, etc. Just open road and sun. It braked once. Hopefully it's not a constant issue.

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