I'm hoping someone might provide some insight. I recently finished building an attached garage and had a new concrete driveway poured. After finally being able to park inside I noticed a small issue. Whenever I reverse out of my garage and after putting the SUV in Drive to drive toward the exit of my driveway the vehicle will slam on the brakes like I'm about to hit something. However there is nothing in front of me at the time. So I'll reverse to backup just in case and the vehicle will slam on the brakes again like their is something behind me. Last time I noticed that the instrument panel gives indicator of something near the passenger side door but there is nothing ever there. To get around it I have to have my passenger get out and walk around the vehicle so the cameras see a person and beep that someone is in my way.

Anyone have any clue to what's going on? I haven't taken it to Lexus yet as it only happens at my house and I won't be able to have a technician come to my house to troubleshoot. 😂

 

Maybe something with your sensors messed up Definitely need to check them out, maybe they have some hyper sensitivity in them that needs to be adjusted So when you had your old driveway there was no problem, then after the new concrete poured now is the problem? Tell them you want a refund and your old concrete back

 

You have to disable the PKSB-systeem (Parking Support Brake)

 

I have had a similar experience twice now. My NX 450h+ has about 800 miles on it. I was backing out of a long driveway when suddenly the brake slammed on an a large red BRAKE alert showed on the infotainment screen. There was a small patch of ice on the driveway, so I chalked it up to that. Then a few days later when backing out of my garage the brakes slammed on again. It is very startling when this happens!

 

Diagrams man, we need diagrams. And measurements too, showing us exact positions, angles and distances to all nearby objects (+/- 2mm tolerance should be good). LOL.

But seriously, these systems do hate garages. I think you'd have a hard time finding someone that parks their NX in a garage that hasn't had the automatic braking feature activate. Assuming there is no immediate object of any sort nearby (I've had mine trigger because there was a tall skinny weed growing out of a parking lot crack when parking at work), the easy way around this (other than shutting it off every time, which to me is a bit of a PITA) is simply to take it nice and slow while maneuvering in and around garages or other obstacles. The trigger criteria is speed dependent.

 

Good advice except this is a brand new driveway with new concrete as we didn't have one before.

 

The "go slow and keep foot on the brake" approach will usually keep you away from those sphincter clenching auto brake episodes. I've come to know that this auto braking system is very 'touchy' and your speed aggravates the situation. Even inclines can be problematic too. Shrubs, bushes, small signs strung up on chains that move in the wind, those advertising 'sails' stores put up on grass around parking lots, long stemmed plants that wave in the breeze too. Your sensors and cameras are detecting a movement toward your car either in back or upfront. There is obviously some determined 'delta' speed which triggers the system, so how fast the object is perceived to be approaching your car. I often have it triggered when backing out of spot in a parking lot and someone is walking towards my car's back end, I may not see them but my sensors do and clamp on the brakes.

Turning the system off isn't the solution, you paid big money for this safety system and it should do its job correctly. Maybe take photos of your area, even go as far as to stop your car exactly where it triggers, get out and take photos of the area around the car. Show your dealer technician and see if they see anything that would be of concern. If nothing, then maybe the system needs to be recalibrated. This take about 1- 2 hours to do typically, but if there is no reason to believe you've damaged anything it would be covered under warranty.

 

I have had this same problem every time I exited my garage. I go slow and I do keep my foot on the brake. I need to make a sharp left turn in reverse as I exit to avoid my daughter's car parked in the driveway, and when this happens the front left wheel comes close (and sometimes onto) to the lawn. The brake would then suddenly be applied. A few times I could not move the car forward or in reverse and had to turn off the Parking Support Brake just to get the car moving again. So now I just leave it off to avoid a daily heart attack with the brakes slamming.

 

Yes, I've experienced something like that too! I couldn't move! Was at a red light, one car in front of me. There was room to move to the right and out of the way for an ambulance coming toward us from behind! I turned my wheel to the right and stepped on the gas, probably too hard, but the car clamped on my brakes and I was stuck until the car in front moved forward a little. Plus the wife alarm was going off too! 'Move Over, Move Over!!' There's no way to turn that 'feature off' though.

 

keep your foot on brake and lightly apply gas. once you brake the system will let you be in control. Thats my finding.

Now, doing this someone might be able to smoke the mirror , if you are too close to it when backing into the garage. its a $2000 oopps .. Don't ask how I know...

 

It's happened twice to me also in my 6 months of ownership. Its the very definition of an anomoly. It happened in the same place I back up everyday, right where my driveway concrete meets the road. To say its startling is an understament! I'm watching the mirror and camera and the car slams to a stop with a RED BRAKE messege and my brain goes to what living animal (or worse, child!) did I just hit! BTW I briefly mentioned this to my tech when I had my 6 month service, but he had no reply. It was more important for me to get him to document the Apple Maps HUD issue.

 

I've parked my NX into my garage for almost 3 years and I've never had this type of sudden parking in the garage. However, I have had a few times when backing into a parking spot and a car driving by cause it to stop or some people walking away from the car it and stopped.

 

I have also experienced this when backing out of my garage after a snowfall when the snow pile was on the right side of the car and my driveway has an 'S' curve. I was really confused when this happened but eventually realized if I went slow enough and made sure that the trajectory on the rear camera showed that I wasn't going into the snow, I avoided the braking, Took me a couple of times to figure out what was triggering the braking.

 

It happened to me when I was backing up in the heavy rain. It did a brake hard all of sudden. Nothing was there except the pouring rain. Nothing got damaged so it's good.

 

Yeah there was nothing around mine when it happened either time. Just annoying. For now I just have to go extra slow as I back out of my driveway until I get about 30 yards up my driveway then I can drive normally.