Forward collision and lane keep assist still a problem on 2022 refresh?

[Hooooves]

1 minute ago, Kaylan Steen said:

You'll need to reset the ecm. Remove the negative terminal from Your battery. You will need to use a socket wrench to do this. Next, flip Your headlights on. This will fully drain the computer, or ECM. Wait for around 10 to 15 minutes. Then, turn the headlights off, and reconnect the negative terminal to Your battery. Start Your engine, and the computer should be reset.

You may have a faulty fuse too. Sometimes, they won't look tripped, or damaged in any way. You can also add a little electrical grease to it as well. 

Thank you.  Will try this.   Will running the headlights drain battery completely?  Gonna need a jump afterwards?

[Hooooves]

27 minutes ago, Kaylan Steen said:

You'll need to reset the ecm. Remove the negative terminal from Your battery. You will need to use a socket wrench to do this. Next, flip Your headlights on. This will fully drain the computer, or ECM. Wait for around 10 to 15 minutes. Then, turn the headlights off, and reconnect the negative terminal to Your battery. Start Your engine, and the computer should be reset.

You may have a faulty fuse too. Sometimes, they won't look tripped, or damaged in any way. You can also add a little electrical grease to it as well. 

Also, The headlights won't turn on with negative terminal disconnected.

[Steve-2019]

Try re-reading her instructions again.  It should make sense to you. 

[Hooooves]

10 minutes ago, Steve-2019 said:

Try re-reading her instructions again.  It should make sense to you. 

Nope.  Re-read and didnt help.

[Kaylan Steen]

You disconnect the battery cable as directed and leave it off as directed. This has nothing to do with your headlights. Nothing will work, as you're disconnecting your power source. 

[Hooooves]

1 minute ago, Kaylan Steen said:

You disconnect the battery cable as directed and leave it off as directed. This has nothing to do with your headlights. Nothing will work, as you're disconnecting your power source. 

Guess I'm just confused about turning the headlights on, with no power and all.   What am I missing?   Lol

[Kaylan Steen]

So, the system will have a certain amount of electrical current after disconnecting the battery. If you leave a circuit closed that consumes power, then it drains any residual current left, if any. Don't worry about the lights; just follow the instructions as directed and do not dwell on anything else. It's like a computer, you have to discharge any residual electricity before you start working on it so you don't accidentally fry something inadvertently.  

[Hooooves]

1 hour ago, Kaylan Steen said:

So, the system will have a certain amount of electrical current after disconnecting the battery. If you leave a circuit closed that consumes power, then it drains any residual current left, if any. Don't worry about the lights; just follow the instructions as directed and do not dwell on anything else. It's like a computer, you have to discharge any residual electricity before you start working on it so you don't accidentally fry something inadvertently.  

Thanks for clearing that up.  I did try it earlier today, before my comments.   No luck clearing.  Any way to confirm ECM was reset?  Interestingly though the adaptive cruise control now works again but the error light hasn't cleared.

[Kaylan Steen]

It's a possibility, but you need to replace the fuse with a new one and add a little electrical grease to the spade to ensure good contact. It's possible the front collision camera went out if it had a direct short. But I say that's unlikely give  that everyone else in this thread has had success with the fuse fix. I would try taking both positive and negative terminals off the battery and let it sit for at least 15 min. Don't forget to get a new fuse and put a light amount of electrical grease on it.

[Hooooves]

W

9 hours ago, Kaylan Steen said:

It's a possibility, but you need to replace the fuse with a new one and add a little electrical grease to the spade to ensure good contact. It's possible the front collision camera went out if it had a direct short. But I say that's unlikely give  that everyone else in this thread has had success with the fuse fix. I would try taking both positive and negative terminals off the battery and let it sit for at least 15 min. Don't forget to get a new fuse and put a light amount of electrical grease on it.

Will attempt again this afternoon.  Thanks

[Kaylan Steen]

I wanted to add one more thing. When you take both terminals off, tie the negative terminal to the positive terminal of the truck to completely drain any residual charge in the ECM's capacitors. This is what you're draining when you turn the headlights on or depress the breaks. Otherwise, you're just spinning your wheels per se.

[Hooooves]

4 hours ago, Kaylan Steen said:

I wanted to add one more thing. When you take both terminals off, tie the negative terminal to the positive terminal of the truck to completely drain any residual charge in the ECM's capacitors. This is what you're draining when you turn the headlights on or depress the breaks. Otherwise, you're just spinning your wheels per se.

No luck.

[Kaylan Steen]

Sorry, off to the dealership you go! Good luck; they're pretty shady most of the time.

[Kevin Gibbons]

Have been driving my new 2023 Colorado ZR2 for 2 weeks and suddenly the Forward Collision System Unavailable light is on. Can't use Adaptive Cruise Control, or Lane Keep Assist. I made sure all cameras and sensors are clean, but warning still on. Truck's going to the dealership next week for service.

 

Edited January 30, 2024 by Kevin Gibbons
new pic

[Kevin Gibbons]