Couple of quick questions about ACC sensor

[skrumpe]

Last week I got help with an issue with my ACC cutting off and saying sensor blocked after a very minor accident. Found the radar box had popped loose and popped it back and the message went away until this weekend while driving after a rainstorm. Kept getting messages about the camera not working, but always with the cruise malfunction. Anyway, got FORScan and the cable to hook to my laptop and calibrated the camera. Drove 10 miles and that's the longest I've gone without the ACC cutting off and giving me a message and getting a message in the app about the camera.

But it still seems like the ACC is intermittently and not always detecting the car in front of me. For instance, it will show the car icon then the icon will disappear and the truck won't slow down. I ordered a new sensor but my 2 questions are: 1) I noticed a little jiggle to the sensor, like it's not 100% solidly mounted to the bracket. Is this normal or should I investigate further? and 2) should I try to recalibrate this sensor with FORScan or should I just wait until I get the new one?

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[RangerBill]

l don't think that you want any jiggle to the sensor mounting. I would fix that first.

 

[skrumpe]

Kinda what I was thinking. That will be a next day off task to get in there and see what's going on

 

[Big Blue]

Just a couple questions or at least things to think about. The ACC uses both the radar sensor in the grille and the CAMERA by the rear view mirror. This camera is also used for lane keeping and forward collision detection. So, did the warning say "sensor" or "camera"? You may still be on the right track if the sensor is loose in its mounting.

 

[skrumpe]

Just a couple questions or at least things to think about. The ACC uses both the radar sensor in the grille and the CAMERA by the rear view mirror. This camera is also used for lane keeping and forward collision detection. So, did the warning say "sensor" or "camera"? You may still be on the right track if the sensor is loose in its mounting.

It was alternating between the two, but mostly sensor. Then I found the loose mounting and put it back at it kept saying camera. This weekend was the first time in days it said sensor blocked. But it still acts up with detecting cars in front. Even on my little test drive, it seemed to be unable to decide if there was a car in front or not when there clearly was. But it never deactivated the ACC or gave me a message like it had been doing. Could be the small amount of movement or damage to sensor. Or just enough of a whack to knock it out of calibration like the camera.

 

[Big Blue]

It was alternating between the two, but mostly sensor. Then I found the loose mounting and put it back at it kept saying camera. This weekend was the first time in days it said sensor blocked. But it still acts up with detecting cars in front. Even on my little test drive, it seemed to be unable to decide if there was a car in front or not when there clearly was. But it never deactivated the ACC or gave me a message like it had been doing. Could be the small amount of movement or damage to sensor. Or just enough of a whack to knock it out of calibration like the camera.

It probably is the sensor. If it was an issue with the camera, you would be getting warnings about the collision and lane keeping being unavailable also. Just want to make sure you were aware that ACC uses both the camera and the radar sensor. A good cleaning of the windshield in front of the camera may also help.

 

[airline tech]

Being that the CCM was knocked off from its mounting.
Is the mounting point damaged, bent misshaped etc from the OE Design?

Is the CCM cracked ar damaged in any way?

Any damage to the bumper or surrounding areas in front of the CCM can cause operational issues are those intact and not deformed, bent, broken etc.

The CCM requires a secure mount and is calibrated (Vertical & Horizontal)

The Vertical Alignment is done (old school) with a combo square and adjusting this bolt.
Adjust to (LEVEL) the bubble

NOTE: In order for the adjustment to be accurate (it is recommended to be on an Alignment Rack)
To get the truck (True Level), but if you have a known level driveway or surface to park on this should work as well.

The Horizontal Alignment is done via the Scan Tool, with the Engine Running

The Horizontal Alignment is the CCM Calibration Procedure, it calibrates the CCM from its (installed Vertical) adjustment and requires no physical adjustment, it's all done via the software.

I am unsure if Forscan has this feature and may require a scan tool capable of doing it.

So, if any damage in front of or around the CCM is present or the CCM module is not mounted in the factory (leveled) position or allowed to bounce around while driving.
It is not going to operate correctly.
It has to be able to sense movement and objects in front of it, so 1 of these above variables is causing the issues you are having.

Other Variables:
Damaged CCM (internally) from the accident, cracked housing or damaged connector or pins from dropping down, pulling the harness.
Damaged harness from the accident, pinched chaffed wire etc.

 

[skrumpe]

Thanks for this. This will help me make sure everything is aligned physically. I saw where someone had used FORScan to calibrate the sensor and there is definitely a calibration item listed in the menu. Like I said, that will be my next day off next week.

As for damage, when I say very minor, I mean very minor. This picture was at the scene (you can see the blue lights reflected in the grill). My license plate bracket got broken off and that was it

Being that the CCM was knocked off from its mounting.
Is the mounting point damaged, bent misshaped etc from the OE Design?

Is the CCM cracked ar damaged in any way?

Any damage to the bumper or surrounding areas in front of the CCM can cause operational issues are those intact and not deformed, bent, broken etc.

The CCM requires a secure mount and is calibrated (Vertical & Horizontal)

The Vertical Alignment is done (old school) with a combo square and adjusting this bolt.
Adjust to (LEVEL) the bubble

NOTE: In order for the adjustment to be accurate (it is recommended to be on an Alignment Rack)
To get the truck (True Level), but if you have a known level driveway or surface to park on this should work as well.

The Horizontal Alignment is done via the Scan Tool, with the Engine Running

The Horizontal Alignment is the CCM Calibration Procedure, it calibrates the CCM from its (installed Vertical) adjustment and requires no physical adjustment, it's all done via the software.

I am unsure if Forscan has this feature and may require a scan tool capable of doing it.

So, if any damage in front of or around the CCM is present or the CCM module is not mounted in the factory (leveled) position or allowed to bounce around while driving.
It is not going to operate correctly.
It has to be able to sense movement and objects in front of it, so 1 of these above variables is causing the issues you are having.

Other Variables:
Damaged CCM (internally) from the accident, cracked housing or damaged connector or pins from dropping down, pulling the harness.
Damaged harness from the accident, pinched chaffed wire etc.

 

[Jason B]

A little jiggle at the sensor could mean several feet at a distance of 60 feet from the truck.

 

[skrumpe]

A little jiggle at the sensor could mean several feet at a distance of 60 feet from the truck.

That’s what I was thinking, might be the bushing cracked

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