[zipfan]

the 2021 Santa Fe smart cruise control cannot be disabled so that you can use regular cruise control. Let me share why this is a safety issue and ask other owners if you would chime in so something can be done about it.

I am in the left lane with cruise set at 75mph and 1 car distance. The distance between me and the car in front of me is very generous and invites other cars to get in front of me. My speed suddenly goes from 75mph to 54 mph. Before the car can automatically accelerate, other cars are getting in front of me, thinking i am a jerk driving in the wrong lane when in fact my speed is set over the speed limit. Not only does this impact cars pulling in front of me, but the sudden drop in speed causes near rear end collisions as there is no warning to the drivers behind me that my vehicle is slowing over 20mph instantly.
So far, i can only use this dangerous smart cruise when there are no other cars near me on the highway which is not very often.
Odd that a feature that was intended to promote safety has taken the control away from the driver who is ultimately in charge of that.

We have taken this issue to 2 dealerships, we have 2 case numbers with Hyundai Customer Service who fails to contact us back.
Next step I guess is to go to arbitration under the Lemon Law if Hyundai refuses to acknowledge and fix this problem.

It's not a defect issue.....it's working as designed, albeit maybe a poor design. Why are you using cruise in congested driving?? Not a lemon law issue Hyundai...maybe update the distance calculations but don't cave.

 

[zipfan]

I have a 2019 Ultimate and had the same situation arise a couple of times just last week on a long trip. I agree the sudden slow down when someone (inconsiderate, jerk driver) squeezes in front of you is dangerous. However you are the driver & you are in control. Cruise Control regardless of type is not a set & forget function, you are still the driver. If you were not on Cruise Control and someone did that to you, you would probably also brake to give yourself more room from that A**hole driver. If you do not like the quick slow down caused by the cruise control, you can always put your foot on the accelerator, thus overriding the cruise control and stay close to that driver in front of you. You can also put your foot on the accelerator to close the distance before someone does that to you, the car will allow you to do that, again you are in control and cruise control is still active but you are overriding it. You would then slow down at a more gradual pace that you are comfortable with, however would be in a tailgate situation with the car in front for a longer period of time.

All of that said, I am not sure why Hyundai did not allow the owner to disable the Adaptive function in your model, disabling it is allowed on my 2019 Ultimate.

It's true.... there needs to be an override; 'manual' cruise. But why are people using cc in traffic?