Couldn’t back out of steep driveway

Scottatah · 08-19-2018, 02:12 PM

So last night I missed my location and pulled into a steep upward driveway from a flat road to turn around. As I was backing out the vehicle jarred kinda violently. I thought maybe I pushed the park button which I’ve always been worried about though I’m sure it wouldn’t let me. I was still in reverse so I thought maybe I hit something but there was tons of room between me and the truck parked on the other side of the road.

Eventually, I concluded it was something with the backup sensors preventing me from backing up cause they thought I was gonna hot somethin. I was essentially stuck. Couldn’t backup despite apparent room and clearance from
What I could tell. If I tried to give it gas the vehicle hammered the brakes. I tried turning off safety stuff but there is nothing for the rear sensors. Didn’t try trailer mode or whatever (didn’t think of it and no idea how to turn it on either). Eventually, I was able to do an Austin powers turn and back onto the road at a 45 degree angle or so. Thankfully it was later at night and not a busy road!

Would y’all more seasoned folks confirm this to be the backup sensors preventing me from hittting something?

XXX3 · 08-19-2018, 02:39 PM

Were all doors completely closed? I’ve had this happen when a door was closed but not securely latched.

Day Laborer · 08-19-2018, 02:47 PM

Vehicle settings > PDC with brake intervention

It's separate from intelligent safety system

Scottatah · 08-19-2018, 02:47 PM

All doors closed. We had driven for about 15min previous to this happening. Driving forward was fine, only reverse mode was sketchy for that small point.

verysideways · 08-19-2018, 02:51 PM

I had a 2017 X5 do something similar to me - can only assume it was the autonymous braking because it thought i was about to hit something.

darrylo · 08-19-2018, 02:57 PM

Quote:

Originally Posted by Scottatah

So last night I missed my location and pulled into a steep upward driveway from a flat road to turn around. As I was backing out the vehicle jarred kinda violently. I thought maybe I pushed the park button which I’ve always been worried about though I’m sure it wouldn’t let me. I was still in reverse so I thought maybe I hit something but there was tons of room between me and the truck parked on the other side of the road.

Eventually, I concluded it was something with the backup sensors preventing me from backing up cause they thought I was gonna hot somethin. I was essentially stuck. Couldn’t backup despite apparent room and clearance from
What I could tell. If I tried to give it gas the vehicle hammered the brakes. I tried turning off safety stuff but there is nothing for the rear sensors. Didn’t try trailer mode or whatever (didn’t think of it and no idea how to turn it on either). Eventually, I was able to do an Austin powers turn and back onto the road at a 45 degree angle or so. Thankfully it was later at night and not a busy road!

Would y’all more seasoned folks confirm this to be the backup sensors preventing me from hittting something?

It's almost certainly the PDC emergency braking. We have a slightly steep "bend" in our driveway, which often activated it. We just turned off that function (look in the online manual for "Emergency braking function").

Aaaaaaaaa · 08-19-2018, 02:57 PM

Quote:

Originally Posted by Day Laborer

Vehicle settings > PDC with brake intervention

It's separate from intelligent safety system

It's this. When the shadow is in a certain position the car thinks there's an object and brakes automatically.

TreDirtyFive · 08-19-2018, 03:23 PM

This happens to me all the time on steep hills and it is super annoying. If I had to order again I would not buy my car with any of the driving assistance features whatsoever.

CPRitter · 08-19-2018, 04:17 PM

Quote:

Originally Posted by Scottatah

So last night I missed my location and pulled into a steep upward driveway from a flat road to turn around. As I was backing out the vehicle jarred kinda violently. I thought maybe I pushed the park button which I’ve always been worried about though I’m sure it wouldn’t let me. I was still in reverse so I thought maybe I hit something but there was tons of room between me and the truck parked on the other side of the road.

Eventually, I concluded it was something with the backup sensors preventing me from backing up cause they thought I was gonna hot somethin. I was essentially stuck. Couldn’t backup despite apparent room and clearance from
What I could tell. If I tried to give it gas the vehicle hammered the brakes. I tried turning off safety stuff but there is nothing for the rear sensors. Didn’t try trailer mode or whatever (didn’t think of it and no idea how to turn it on either). Eventually, I was able to do an Austin powers turn and back onto the road at a 45 degree angle or so. Thankfully it was later at night and not a busy road!

Would y’all more seasoned folks confirm this to be the backup sensors preventing me from hittting something?

What would have happened if you had put the transmission in neutral and turned vehicle off. Could you have rolled back?

jbtco · 08-20-2018, 07:50 AM

As above switch off emergency pic in the I drive.

This is covered in the manual though a bit tricky to find. In the uk it is in the “driver assistance systems” under “Emergency Braking Function, Active PDC”

The system can be annoying

DoctorDave · 11-26-2018, 04:31 AM

I had this same problem on my x3, 2.0D Xline. It happened revering off a drive way into a main road. The brakes slammed on 3 times leaving me at the mercy of approaching fast traffic.
I took the car in and the BMW mechanic test drove it and it scared the life out of him!
The car had a control box and reversing sensor replaced (BMW Stratstone, Derby had the car for a week) Seemed fixed but 2 weeks later it did the same on a wet road reversing around a corner, aggressive braking three times before I could get it moving. The car is booked to go back in next week.
Clearly the sensors are too sensitive. The fact that others have this problem and 5 series G30 users on this forum, suggests this is a design flaw, not a fault.
I will let you know how I get on at BMW.

Tchgrif · 11-26-2018, 06:27 AM

next to both my garage doors are large pots with small trees in them, we had an ice storm last week and one of the trees next to my BMW's door was bent over a bit and when trying to back out the car violently came to a stop like I had ran into something solid. it would not continue to go in reverse. I tried pulling in and then slowly backing out till I realized it was the tree that was slightly bent over. got out shook the ice and snow off the tree limb so it was more upright and the car backed right out. knowing what it was it makes sense now, but in the moment I had no clue what was happening.

MrPorter · 11-26-2018, 11:56 AM

Super annoying in this instance or sometimes with parallel parking on a busy street...but was very helpful in the Whole Foods parking garage a couple weeks ago, which is the exact location where I imagined this feature being useful LOL.

XXX3 · 11-26-2018, 12:21 PM

Quote:

Originally Posted by Day Laborer

Vehicle settings > PDC with brake intervention

It's separate from intelligent safety system

Combat Action ribbon? If yes, I sincerely thank you for your service. Be safe.
——————-

JJ
USMC Vietnam Vet

Day Laborer · 11-26-2018, 03:33 PM

Quote:

Originally Posted by XXX3

Quote:

Originally Posted by Day Laborer

Vehicle settings > PDC with brake intervention

It's separate from intelligent safety system

Combat Action ribbon? If yes, I sincerely thank you for your service. Be safe.
——————-

JJ
USMC Vietnam Vet

Thank you Devil!

Welcome home!- us young vets wouldn't have our benefits we have today without the Vietnam vets like you who fought very hard to be recognized for the thankless war you guys went through

Lux700 · 11-26-2018, 05:04 PM

Quote:

Originally Posted by jbtco

As above switch off emergency pic in the I drive.

This is covered in the manual though a bit tricky to find. In the uk it is in the “driver assistance systems” under “Emergency Braking Function, Active PDC”

The system can be annoying

I’ve put this onto one of my preset buttons. Just to create a bit of extra driveway space, I always reverse onto my drive at home and tuck the car tight against some shrubs (passenger side - UK) and when I first got the car it stopped dead when I tried to do this. Nearly shat myself, for a split second I thought maybe I’d missed seeing something and have now hit it? No, it’s the brakes being applied automatically. Having saved to a preset allows me to quickly tweak it ready for a home parking moment.

BMWZ4 · 11-26-2018, 05:33 PM

Quote:

Originally Posted by pheerIx

Quote:

Originally Posted by Day Laborer

Vehicle settings > PDC with brake intervention

It's separate from intelligent safety system

It's this. When the shadow is in a certain position the car thinks there's an object and brakes automatically.

Just do this ^^^

Happened to me once, turned it off, hasn't happened since

frank23 · 11-27-2018, 06:07 PM

Just changed that setting as well - in certain light conditions it would slam on the brakes a few times when reversing into my driveway. It seemed it detected its own shadow as an obstacle...

Indeed it feels like you hit a solid wall, which is rather disconcerting.

nogren · 11-28-2018, 01:14 AM

Quote:

Originally Posted by frank23

Just changed that setting as well - in certain light conditions it would slam on the brakes a few times when reversing into my driveway. It seemed it detected its own shadow as an obstacle...

Indeed it feels like you hit a solid wall, which is rather disconcerting.

I have not heard that the reversing camera got any AI to detect obstacles.
There are ultra sonic sensors, and with some options, radar that can detect things. Don't think shadows are one of it...
Or?

weez · 11-28-2018, 02:01 AM

You can turn this feature off? For me it would be annoying, for my wife it would be Armageddon.

frank23 · 11-28-2018, 02:32 PM

Quote:

Originally Posted by nogren

I have not heard that the reversing camera got any AI to detect obstacles.
There are ultra sonic sensors, and with some options, radar that can detect things. Don't think shadows are one of it...
Or?

I'd agree on that thought. But I cannot explain why the light conditions would have an effect otherwise. The problem does not happen when it's either dark or full daylight.

Also the car has a similar problem when leaving automatic PDC activation on. When it gets to twilight, it will activate at just about every traffic light you stop at, and seems to focus on the stop line marker in the road.

08-19-2018, 02:12 PM	#1
Scottatah Second Lieutenant 145 Rep 254 Posts Drives: 2018 M40i Join Date: Feb 2018 Location: Edmonton iTrader: (0)	Couldn’t back out of steep driveway So last night I missed my location and pulled into a steep upward driveway from a flat road to turn around. As I was backing out the vehicle jarred kinda violently. I thought maybe I pushed the park button which I’ve always been worried about though I’m sure it wouldn’t let me. I was still in reverse so I thought maybe I hit something but there was tons of room between me and the truck parked on the other side of the road. Eventually, I concluded it was something with the backup sensors preventing me from backing up cause they thought I was gonna hot somethin. I was essentially stuck. Couldn’t backup despite apparent room and clearance from What I could tell. If I tried to give it gas the vehicle hammered the brakes. I tried turning off safety stuff but there is nothing for the rear sensors. Didn’t try trailer mode or whatever (didn’t think of it and no idea how to turn it on either). Eventually, I was able to do an Austin powers turn and back onto the road at a 45 degree angle or so. Thankfully it was later at night and not a busy road! Would y’all more seasoned folks confirm this to be the backup sensors preventing me from hittting something?
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08-19-2018, 02:39 PM	#2
XXX3 Second Lieutenant 160 Rep 230 Posts Drives: X3 M40i Join Date: Apr 2018 Location: San Diego iTrader: (0)	Were all doors completely closed? I’ve had this happen when a door was closed but not securely latched. __________________ 2018 GO1 X3 M40i Alpine White 2018 Acura RDX Tech Pearl White 2016 Tundra TRD Pro (sold) 2013 Boss 302 Race Red (sold)
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08-19-2018, 02:47 PM	#3
Day Laborer Lieutenant Colonel 1748 Rep 1,892 Posts Drives: M5 CS / iX 50i Join Date: Dec 2009 Location: NY, NY, CT, PA, MD, VA, DE, FL iTrader: (11) Garage List [0.00]	Vehicle settings > PDC with brake intervention It's separate from intelligent safety system __________________ https://www.instagram.com/day_laborer/ *(DM me from this account)* Email: nextlevelautobrokersdc@gmail.com
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08-19-2018, 02:47 PM	#4
Scottatah Second Lieutenant 145 Rep 254 Posts Drives: 2018 M40i Join Date: Feb 2018 Location: Edmonton iTrader: (0)	All doors closed. We had driven for about 15min previous to this happening. Driving forward was fine, only reverse mode was sketchy for that small point.
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08-19-2018, 02:51 PM	#5
verysideways Lateral grip estimator 959 Rep 1,390 Posts Drives: i4, M2 Join Date: Jul 2011 Location: Cotswolds, UK iTrader: (0) Garage List 2023 BMW i4 Individual [8.37] 2010 Porsche 997.2 ... [10.00] 2002 Morgan Aero 8 [10.00]	I had a 2017 X5 do something similar to me - can only assume it was the autonymous braking because it thought i was about to hit something. __________________ '20 BMW M2 '23 BWM i4 Mora '10 Porsche 997 '02 Morgan Aero 8 http://petrolhead.tours
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08-19-2018, 03:23 PM	#8
TreDirtyFive Major 253 Rep 1,334 Posts Drives: X3 M40i Join Date: Jun 2008 Location: Los Angeles, CA iTrader: (11)	This happens to me all the time on steep hills and it is super annoying. If I had to order again I would not buy my car with any of the driving assistance features whatsoever. __________________ X3 M40i G01, M235i F22, 335 F30 MSport, 135 DCT, 335 E92, Audi A3
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08-20-2018, 07:50 AM	#10
jbtco Captain 163 Rep 641 Posts Drives: F80 M3 Join Date: Nov 2008 Location: Scotland iTrader: (0)	As above switch off emergency pic in the I drive. This is covered in the manual though a bit tricky to find. In the uk it is in the “driver assistance systems” under “Emergency Braking Function, Active PDC” The system can be annoying __________________ M2 competition, Alpine White Previously Owned : X3 M 40i, F80 M3 Comp Pack, DCT, Yas Marina Blue, F80 M3, DCT , E92 M3 Comp Pack, E92 M3, Z4MC, E46 M3 CS, E46 M3
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11-26-2018, 04:31 AM	#11
DoctorDave Registered 0 Rep 1 Posts Drives: BMW X3 xdrive2.0d xline B4 Join Date: Nov 2018 Location: Derby, UK iTrader: (0)	autonomous braking I had this same problem on my x3, 2.0D Xline. It happened revering off a drive way into a main road. The brakes slammed on 3 times leaving me at the mercy of approaching fast traffic. I took the car in and the BMW mechanic test drove it and it scared the life out of him! The car had a control box and reversing sensor replaced (BMW Stratstone, Derby had the car for a week) Seemed fixed but 2 weeks later it did the same on a wet road reversing around a corner, aggressive braking three times before I could get it moving. The car is booked to go back in next week. Clearly the sensors are too sensitive. The fact that others have this problem and 5 series G30 users on this forum, suggests this is a design flaw, not a fault. I will let you know how I get on at BMW.
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11-26-2018, 06:27 AM	#12
Tchgrif Lieutenant 268 Rep 457 Posts Drives: X4 M40i Join Date: Sep 2014 Location: pgh pa, USA iTrader: (0)	next to both my garage doors are large pots with small trees in them, we had an ice storm last week and one of the trees next to my BMW's door was bent over a bit and when trying to back out the car violently came to a stop like I had ran into something solid. it would not continue to go in reverse. I tried pulling in and then slowly backing out till I realized it was the tree that was slightly bent over. got out shook the ice and snow off the tree limb so it was more upright and the car backed right out. knowing what it was it makes sense now, but in the moment I had no clue what was happening.
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11-26-2018, 11:56 AM	#13
MrPorter First Lieutenant 183 Rep 309 Posts Drives: 2019 X3 M40i, 2020 X7 M50i Join Date: Jun 2018 Location: Chicago iTrader: (0)	Super annoying in this instance or sometimes with parallel parking on a busy street...but was very helpful in the Whole Foods parking garage a couple weeks ago, which is the exact location where I imagined this feature being useful LOL.
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11-27-2018, 06:07 PM	#18
frank23 Private First Class 16 Rep 100 Posts Drives: 2020 Tesla Model Y Join Date: Mar 2018 Location: SoCal iTrader: (0)	Just changed that setting as well - in certain light conditions it would slam on the brakes a few times when reversing into my driveway. It seemed it detected its own shadow as an obstacle... Indeed it feels like you hit a solid wall, which is rather disconcerting.
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11-28-2018, 02:01 AM	#20
weez Lieutenant 272 Rep 467 Posts Drives: 2021 X3M Competition Join Date: Apr 2008 Location: Arizona iTrader: (0)	You can turn this feature off? For me it would be annoying, for my wife it would be Armageddon.
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