RX - 4th Gen (2016-2022) Discussion topics related to the 2016 and up RX350 and RX450h models

Cruise Control Limit?

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Old 12-03-18, 10:12 PM
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guruuno
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Angry Cruise Control Limit?

I cannot get the car to "lock in" at 25 MPH with the cruise control. Only 28 MPH will it lock.
Is there an adjustment that need to be made?
I want 25 MPH!!
Old 12-04-18, 03:38 AM
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JSracer
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lots of us have lots of wants.

Not aware of any adjustments,
Old 12-04-18, 05:50 AM
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TeKKieNYC
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Why? You are planning on cruising on local streets? I don't see any need for this on any major road or highway in NJ. You are either driving fast or crawling

I got rear ended yesterday cruising at about 25mph on a highway, if I was in cruise control my reaction would have been very slow as I'd be too relaxed, luckily I accelerated when I realized this ******** is not stopping in time and my hitch absorbed all the impact. Stay alert > cruise control convenience.

PS His excuse was that he blinked. It was traffic in all 3 lanes, and that was his best logical answer.
Old 12-04-18, 05:53 AM
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guruuno
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Because enforcement is enforcement. I drive the speed limit. When butthole drivers are up my but pushing me in 25 MPH zones, I don't need to pay the price for a speeding ticket because THEY want to go faster. Learn by example.
Old 12-04-18, 11:01 AM
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mcomer
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Try setting the 28 MPH and then tap down three times.
Old 12-04-18, 12:09 PM
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mspearl95
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Originally Posted by guruuno
Because enforcement is enforcement. I drive the speed limit. When butthole drivers are up my but pushing me in 25 MPH zones, I don't need to pay the price for a speeding ticket because THEY want to go faster. Learn by example.
do people actually get pulled over for going a few miles over the speed limit? Aside from in podunk little towns, that is.
Old 12-04-18, 12:51 PM
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riredale
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12+ over seems to be the trigger here in Oregon.
Old 12-04-18, 03:37 PM
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Nail34
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Originally Posted by guruuno
Because enforcement is enforcement. I drive the speed limit. When butthole drivers are up my but pushing me in 25 MPH zones, I don't need to pay the price for a speeding ticket because THEY want to go faster. Learn by example.
Make sure to set the vehicle-to-vehicle distance setting to 3 blue bars so you don't run into the butthole in front of you.
Old 12-05-18, 12:35 AM
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Rarebird
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Originally Posted by mcomer
Try setting the 28 MPH and then tap down three times.
I believe 28 is lowest we can set. Will need to re-confirm on RX next time.

Btw, OP, on Waze app GPS always shows car going slower than my actual speed. So 50 on my cruise is 48 on waze, etc.
Old 12-05-18, 07:37 AM
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Coachdad
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Page 310 of the owner’s manual states: Cruise control can be set when - the vehicle speed above approximately 25 mph (40 km/h).
Old 12-05-18, 08:19 AM
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offroad200
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Originally Posted by Rarebird


I believe 28 is lowest we can set. Will need to re-confirm on RX next time.

Btw, OP, on Waze app GPS always shows car going slower than my actual speed. So 50 on my cruise is 48 on waze, etc.
It's actually the other way around. Your speedometer is reading faster than you are actually going. All manufacturers do this. They all read about 2-3% faster than you are actually going. On my Tacoma I put slightly taller tires to factor this is in so now my speedo is dead on.
Old 12-05-18, 08:24 AM
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Rarebird
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Originally Posted by offroad200
It's actually the other way around. Your speedometer is reading faster than you are actually going. All manufacturers do this. They all read about 2-3% faster than you are actually going. On my Tacoma I put slightly taller tires to factor this is in so now my speedo is dead on.
oh you’re right!
Old 12-10-18, 04:16 PM
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guruuno
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Called Lexus. Got 3 different answers. Bottom line 25mph with NO adaptive cruise. 28 mph WITH adaptive cruise. If you have adaptive cruise it can be disabled. Does that make the 25mph work?
Old 12-12-18, 02:38 PM
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wktjr
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Originally Posted by guruuno
Called Lexus. Got 3 different answers. Bottom line 25mph with NO adaptive cruise. 28 mph WITH adaptive cruise. If you have adaptive cruise it can be disabled. Does that make the 25mph work?
28 is my lowest.
Old 12-13-18, 12:01 PM
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AirForce8
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Just to throw in one more caveat, I've noticed in manual transmission mode that I cannot set the radar cruise control at any speed if I'm in 3rd gear or below. I was trying to set it yesterday for 30mph but it simply would not take... Then I noticed I was in 3rd gear(which was appropriate for the given speed I was at) so I thought what the hell upshifted to 4th and bingo, set for 30mph first try.


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