Issues / glitches during 2021 Bronco startup -- "Check brakes," "trail turn assist unavailable," and "hill assist unavailable." error messages

[khatch]

that sounds like just providing power to the windows. and foot off the brake so you don't accidentally start the engine.

That makes sense. thanks.

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[AP_2004]

For some reason I'm thinking of my old NES where you'd have to blow on the cartridge, tap it three times and then gently close the door. I know there is at least one other person on this forum that will get that reference...

The controllers were indestructible but don't you dare glance at the system.

Blow on it first…if that didn’t work put it in the freezer for a few seconds

 

[88to21bronco]

By way of update: spent two hours + at the service center today. Tech said the Bronco has been throwing codes since it left the factory. They went through a point-by-point diagnostic test. Definitely software related connected to ABS/steering stuff. They reset everything and submitted to Ford. We will see what happens moving forward.

It hasn't acted up since yesterday. Doors are on it...still thinking that may be the issue. Techs thought the new tires may have messed with the system as well. All in all, hopefully growing pains and we will be good to go.

I'm driving to MS this weekend, then to Austin the week after for Off-rodeo. We shall see.

BTW: "Throwing Codes" is a great band name.

 

[KnoxGnater]

Thanks for taking the time to work with the Dealer to provide the data, the rest of us will benefit from your efforts as the bugs get worked out.

 

[The Memedalorian]

I can't believe people had to have "turn on the accessory power to the vehicle without starting the engine in order to lower the windows" explained to them...

 

[TRMFAM]

By way of update: spent two hours + at the service center today. Tech said the Bronco has been throwing codes since it left the factory. They went through a point-by-point diagnostic test. Definitely software related connected to ABS/steering stuff. They reset everything and submitted to Ford. We will see what happens moving forward.

It hasn't acted up since yesterday. Doors are on it...still thinking that may be the issue. Techs thought the new tires may have messed with the system as well. All in all, hopefully growing pains and we will be good to go.

I'm driving to MS this weekend, then to Austin the week after for Off-rodeo. We shall see.

BTW: "Throwing Codes" is a great band name.

Throwing Codes sounds like a great vanity plate!!! Thanks for going through the trouble!

 

[Toccoa]

BTW: "Throwing Codes" is a great band name.

 

[Ahauser2010]

I don't know what the purpose of this procedure is but the FORD door removal video says to follow this procedure:
push the start/stop button with your foot off the brake
lower the windows
then push start/stop again after lowering the windows (again with foot off the brake)
then disconnect the doors

Then after reconnecting the doors, push start/stop again with the foot of the brake.

I'm not saying many Bronco owners will know this procedure, remember this procedure or follow this procedure. But I'm wondering if the warnings and error messages are a result of not following it.

Well they do this so you protect the window glass when you take it off. So they tell you to turn it on to roll the windows down, then turn it back off so you don’t electrocute yourself when taking them off

 

[Mpatient1]

I can't believe people had to have "turn on the accessory power to the vehicle without starting the engine in order to lower the windows" explained to them...

Well, as someone who's never used one of these new fangled cars without keyed ignitions I wouldn't have thought about this process as "accessory power". I would have just been turning on the car to roll down the windows

 

[swooshdave]

I can't believe people had to have "turn on the accessory power to the vehicle without starting the engine in order to lower the windows" explained to them...

You greatly overestimate your fellow humans.

 

[Virtual-Chris]

So @flip was able to read my codes via his online voodoo

Recurring ABS fault. I'll get it checked out.

It was also an ABS related issue that caused a Bronco to glitch out while off-roading In another thread around here. I’m surprised no ones blaming you for trying to start your truck with the doors off. LOL.

 

[dcg2]

NOT NORMAL. PM me your VIN if you're OK with me checking to see if there are any codes popping up in OASIS. May have something to do with e-brake engaged but if you didn't engage it, that's a problem.

Should having the delivering dealer take a peek at OASIS be added to the checklist for new owners to see if any codes have been noted?

 

[da_jokker]

Well, as someone who's never used one of these new fangled cars without keyed ignitions I wouldn't have thought about this process as "accessory power". I would have just been turning on the car to roll down the windows

I hear ya. I too was used to turning the key backwards for example to turn the radio on but without powering the entire car and providing electricity to the ignition system, etc.

When I got my first keyless start vehicle, I didn't know how to "turn the key backwards" and had to look it up. It was the brake pedal!

If you have the brake pedal pushed when you push the button the car starts, if you do not have the brake pedal down when you push the button the car goes into accessories mode.

I don't know if that's the same for all push button cars but it would be something similar.

 

[flip]

Should having the delivering dealer take a peek at OASIS be added to the checklist for new owners to see if any codes have been noted?

We are supposed to run OASIS when doing a PDI. However, the data I looked at on KGs is through the connected data in OASIS. In order for it to show up on our end you have to set up the FP account and activate the modem. Modem will not be activated until you take delivery which means only way to see codes would be hook up the IDS/FDRS and run a test. Pretty certain Ford can see all of this even if modem isn't activated but they've not officially said so much.

Engineering can only do so much with a code which is why they need us to perform some tests so they can narrow it down to software or hardware issues. This is not uncommon for new system to have parameter or conflict issues and will likely be fixed with a software update.

 

[dcg2]

We are supposed to run OASIS when doing a PDI. However, the data I looked at on KGs is through the connected data in OASIS. In order for it to show up on our end you have to set up the FP account and activate the modem. Modem will not be activated until you take delivery which means only way to see codes would be hook up the IDS/FDRS and run a test. Pretty certain Ford can see all of this even if modem isn't activated but they've not officially said so much.

Engineering can only do so much with a code which is why they need us to perform some tests so they can narrow it down to software or hardware issues. This is not uncommon for new system to have parameter or conflict issues and will likely be fixed with a software update.

Thanks for the thorough explanation! I am NOT adding that to my checklist

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