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No Cruise Control when pulling a trailer, WTH

zlhunter

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I have found my cruise control to be 100% the worst part of being a Rivian owner operator. Driving in the mountIan’s of Colorado, the ACC locks up the brakes anytime there is a large vehicle in another lane while going into a curve it slams on the brakes and puts everyone on the road around me in danger. So, when on a long drive I have taken to using trailer mode so I don’t have the fear of ACC, and its desire to cause more accidents then it will ever prevent.
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SwampNut

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It makes a lot of sense for adaptive cruise control to be disabled when towing.
Meanwhile, other vehicles have allowed adaptive while towing since the previous decade. It worked fantastically in my Gladiator. And using AP in the Tesla while towing was excellent too; I'd just set following distance higher.
 

KubotaTed

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You have to go GM if you want Level 2 cruise while pulling a trailer. Ford doesn't do it either.
 

shap

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It makes a lot of sense for adaptive cruise control to be disabled when towing. The computer does not know, when you’re pulling a trailer, what your stopping performance is going to be like. It does not know by how much it needs to adjust your following distance. It does not know how much of the weight being towed might turn out to be dynamic at high acceleration. It simply cannot safely operate.

It is up to you, the driver, to ensure you’re operating safely at all times. ACC, under normal circumstances, is pretty safe, but you should still be paying attention and ready to take over at any time. When towing, it far too easily provides a sense of false security, and can result in you ending up in an unsafe situation that you (ideally) would have avoided if you were paying more attention. ACC reduces safety when towing.
Somehow other vehicles' computers can do that. I do not think BMW just ignore "safety"
 

S.Mueller

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For those of us with hitch mounted accessories like bike racks with integrated lights (plugged into the trailer light port) it would be nice to have a setting that still allows ACC but mutes the rear sensors.
 

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Somehow other vehicles' computers can do that. I do not think BMW just ignore "safety"
Those other companies have not only significantly more experience and probably orders of magnitude more testing on their systems, but much deeper reserves in terms of both cash and reputation to spend if things go wrong. I would also imagine that a higher percentage of Rivian drivers pull trailers than BMW drivers. The damage that would be done to Rivian by an accident caused by their technology is much greater than the damage that would be done to BMW.

If you think that automotive safety systems are inspired by much other than regulation and a desire to protect the bottom line, you haven’t paid much attention to the history of the auto industry. (Volvo being a fairly obvious exception.)
 

shap

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Those other companies have not only significantly more experience and probably orders of magnitude more testing on their systems, but much deeper reserves in terms of both cash and reputation to spend if things go wrong. I would also imagine that a higher percentage of Rivian drivers pull trailers than BMW drivers. The damage that would be done to Rivian by an accident caused by their technology is much greater than the damage that would be done to BMW.

If you think that automotive safety systems are inspired by much other than regulation and a desire to protect the bottom line, you haven’t paid much attention to the history of the auto industry. (Volvo being a fairly obvious exception.)
Rivian and BMW use the same Mobileye system. BMW just did a much better implementation that should make Rivian ashamed. Anyway, GEN1 will probably see no more changes to their ADAS - Rivian will focus on GEN2 going forward. But even GEN2 uses mobileye for now, with a "promise" to develop something better in the future. It is hard to belive, taking their previous record of promises into account.
 

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You just answered
Rivian and BMW use the same Mobileye system. BMW just did a much better implementation that should make Rivian ashamed. Anyway, GEN1 will probably see no more changes to their ADAS - Rivian will focus on GEN2 going forward. But even GEN2 uses mobileye for now, with a "promise" to develop something better in the future. It is hard to belive, taking their previous record of promises into account.
I’m not sure how this is anything other than you agreeing with my point. Both that BMW has vastly more resources and experience, and that Rivian is taking a more conservative approach to safety, even when using the same underlying technology.
 

shap

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You just answered

I’m not sure how this is anything other than you agreeing with my point. Both that BMW has vastly more resources and experience, and that Rivian is taking a more conservative approach to safety, even when using the same underlying technology.
I did not say I do not agree with you :) It is a shame that Rivian plays so safe, that almost any other vendor outperforms its ADAS system. They continue to promise a great ADAS future, while in reality their system is one of the worst in the segment and this does not correlate with a premium price.
 

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I did not say I do not agree with you :) It is a shame that Rivian plays so safe, that almost any other vendor outperforms its ADAS system. They continue to promise a great ADAS future, while in reality their system is one of the worst in the segment and this does not correlate with a premium price.
Fair enough, I misinterpreted you! Sounds like we’re in agreement, though I think Rivian cant afford to not be more conservative on safety right now. I also suspect we’re not far off from lawsuits and more regulation around these systems, making it even more important for a young automaker in a more precarious position to be more careful (plus the better their safety rating compared to others, the easier it will be for them to sell their technology to others besides VW—or be acquired entirely).
 

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My GM hands-free supercruise works just fine when pulling the trailer, with the exception of not allowing automatic lane changes. I think Rivian's system is just not as sophisticated, but I expect gen2 to get there.
 

shap

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Fair enough, I misinterpreted you! Sounds like we’re in agreement, though I think Rivian cant afford to not be more conservative on safety right now. I also suspect we’re not far off from lawsuits and more regulation around these systems, making it even more important for a young automaker in a more precarious position to be more careful (plus the better their safety rating compared to others, the easier it will be for them to sell their technology to others besides VW—or be acquired entirely).
I think that what will happen - I do not see Rivian, with the current technology they have and market position, having enough to survive alone. More probably than not, they will be acquired. And that actually a good news IMHO.

I wonder where the software stack development of Rivian. Offshore?
Based on the number of software issues they introduced in the last 2 updates, and the inability to increase ADAS functionality (in GEN1 and GEN2), I am surprised they did not shake up the dev. team a bit. They started great, but after 2 years the quality of the software stack is down significantly...
 

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I think that what will happen - I do not see Rivian, with the current technology they have and market position, having enough to survive alone. More probably than not, they will be acquired. And that actually a good news IMHO.

I wonder where the software stack development of Rivian. Offshore?
Based on the number of software issues they introduced in the last 2 updates, and the inability to increase ADAS functionality (in GEN1 and GEN2), I am surprised they did not shake up the dev. team a bit. They started great, but after 2 years the quality of the software stack is down significantly...
With Ford being an early major investor, I was assuming they would eventually acquire them, and (while they’re not my favorite of the big automakers) I was disappointed when they pulled back. VW is an interesting prospect, as I could definitely see Rivian becoming a VW Group brand, while maintaining much more independence and character than they’d be likely to with Ford or Stellantis. And can you just imagine what a Rivian with access to Porsche and Audi resources could do? 🤩
 

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I have found my cruise control to be 100% the worst part of being a Rivian owner operator. Driving in the mountIan’s of Colorado, the ACC locks up the brakes anytime there is a large vehicle in another lane while going into a curve it slams on the brakes and puts everyone on the road around me in danger. So, when on a long drive I have taken to using trailer mode so I don’t have the fear of ACC, and its desire to cause more accidents then it will ever prevent.
I fully concur with your description. ACC is extremely unpredictable and downright dangerous. In my mind this is by far the worst feature of the R1S. If anyone knows how to use "manual" cruise control only without towing I would love to know.
 

vandy1981

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I've been pulling trailers since the late 70s. And my R1T says cruise control is unavailable when trailer connected. Every Truck or SUV I've had since 1980 allow cruise control when pulling a trailer.

Why does Rivian not allow cruise control when pulling a trailer? The little things I took for granted when buying the R1T.
Completely agree and this is one of the things I miss most about our Lightning, which did not disable lane centering, automatic cruise control or blind-spot monitoring while towing.

Edit: in fact, I can't think of a single driver assistance feature on our Gen 1 R1S that outperforms our Lightning, much less our 2019 Jaguar I-Pace. It's unacceptable for a tech-forward company.
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