on guard braking systems

It probably needs to be calibrated. Read the service manual so you know what it requires to calibrate it and then take it to a shop that has the equipment to put it into calibration mode.

When it is in calibration mode they want you to drive down a straight narrow street with lots of obstacles along the side of the road for a few miles... If you have it done, try to go down narrow streets. Don't trust that the "mechanic" knows what they are doing.

When I had mine recalibrated they went on a wide rural street with a shoulder and while it did help, it was still a bit sensitive.

There is a display for it mounted on the dash somewhere? You might be able to unplug it, the display, and it will disable the system as a workaround... Cruise control might need to be reinitiated twice before will work. On-set, off, On-set.

 

I'm driving a 2020 Freightliner Cascadia. It has Driving Assistance 4.0. The automatic emergency braking and adaptive cruise control. It work really good. Not sure if it really a Freightliner system or On Gaurd. I'm guessing Freightliner system because it works. Only 1 time in 64,000 miles did it apply the brakes and that was only for like 2 seconds. Freightliner has display on the dash and I can see what the computers see basically. It shows if something in in front of truck. The distance, the speed of the car or truck in front of my truck. It very accurate you can see if the traffic in front is speeding up or slowing.

So if anyone gets Freightliner Driver Assistance system it work good so far.

 

I have 16 cascadia and it does same thing. Had freightliner work on it 3x when i first got the truck and they said its as good as these systems get. Total junk.

 

On my 2018 Freightliner the Wabco OnGuard system can be activated by the radar sensor in the front bumper and it can also be triggered by the integrated dashcam mounted on the windshield. If the radar or the camera thinks it sees an imminent collision it will activate the brakes. It will do this on my truck if the cruise-control is on or off. If the cruise is maintaing speed or not set at all. It will also activate (brake) if my foot is on the "gas pedal" or flat on the floor.

 

Thats one item I will never accept on a 18 wheeler. It may not be too long where I would be a sort of a man without a country so to speak. But thats one item I will never accept on anything I drive.

 

If you want to Wabco on-guard stop bother you just cover front radar with lead metal sheet. I make my: plastic decorative license plate + attach lead sheet to it + under carpet foam. I monted it @ front of radar.

Trick is that lead is absorbing waves & not reflexing 'em back. Radar use microwave frequency like microwave owen. So not be exposed by microwaves & eliminate waves going to metal & make sparks they put lead metal sheet inside.

 

The above suggestion is bad and contains errors showing lack of understanding.

Lead isn't necessary or particularly desirable for microwave absorption. Lead reflects microwaves like any metal and will block the device's transmission and reception. Aluminum or any easier metal will do including aluminum foil tape. Lead is used for X rays and nuclear radiation.

Microwave oven cavities and oven waveguide are nearly always made of steel because it's cheap. The front glass has a perforated metal plate to see through, and that is made of steel or aluminum though some really old units have a fine copper screen. I used to work on microwave ovens and strip them for parts, and never saw any lead shielding in them, nor imagine why there might have been. I previously worked on ship radars (still licensed) and found the same lack of lead, though more aluminum is used. There are 'RF gaskets' between sections of some waveguides in radars, and around the 'nose' (antenna or probe) of the microwave oven's magnetron. Some microwave gaskets are a woven metallic mesh, but not lead that I have ever seen. The aluminum foil in the kitchen is adequate for the ill-considered purpose of the above post. One roll is more than enough for a piece to go over each sensor, leaving plenty with which to make hats, though some people buy them online these days to avoid being reported by the supermarket cashier placed there by the illuminati to observe them.

The result of blocking the sensors with a reflecting material may be to cause a 'sensor error' detected during POST, stopping the system operation for safety reasons. Hopefully. If the software's that good.

In my worthless opinion, it's a very bad idea to create more risk by applying this sort of crude sensor tampering hackery to computer-controlled brakes already suspected of having mysterious, inconsistent, and probably software-related problems.

There is nearly always a way to properly disable things. Sometimes published, sometimes not even documented. Someone knows, wherever that system was designed, how to do it.