Lexus LS 2007+ :: Cruise Out Of Control - Sloppy In Speed Regulation
Feb 27, 2013
The cruise on my 2013 LS460 SWB RWD sucks big time! Both Dynamic and Normal cruise modes are WAY too sloppy in speed regulation. I was out today on a 55mph PSL two-lane with set speed of 59mph. On a long SLIGHT downhill, the indicated speed topped out at 70MPH!!!
BTW, tranny shifting was weird during this episode with a prolonged run at over 3k RPM. At any rate, that's 11mph over the set speed for the arithmetically challenged. So instead of tooling along at a maximum of 5 over the PSL as my 2007 LS would have done (set speed 59 + overspeed 2 = 61 indicated = 60 actual, so 5mph over PSL), I'm flying at 10mph over the PSL ripe for the picking by any county sheriff (and I saw THREE of them on that road, all with their radar on).
I figure my car's speed regulation (in both Dynamic and Normal cruise) is +11mph/-2mph for set speed of 59mph. That is crazy!
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I just noticed the other day that my cruise control stopped working.
The cruise light will come on, but when I try to set it...nothing. The speed just drops off.
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I recently purchased a 2014 GS350 (CPO). One thing I've noticed is the cruise control has about plus/minus 2 miles per hour variance from its set speed as the car progresses over road inclines. This happens in Eco, Normal, and Sport modes.
I know +/- 2 mph doesn't sound like much, but I thought that the car would hold its set speed without much variance. Even with a manual transmission, my previous car (2006 Audi A4) kept its set speed better than the GS.
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I brought my new 2016 ES350 last month and I love the car
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One feature I am missing is all speed DRCC. In my car the cruise disengage at 25mph. I see the feature I am looking for is available in some other higher models and the Lexus technology video's says 'when your call is equipped with all speed DRCC'.
I would like to know if it's possible to add this feature in my 2016 ES by any means? I searched and couldn't find any other useful info.
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Do our cars have a separate cruise control Module? I drove a new 600 the other day and found that the radar (adaptive) cruise will bring the car to a full stop. My 2009 will not. It deactivates at around 25mph. I emailed another 2009 600 owner who is overseas. He said his also comes to a full stop. So I'm wondering if I can put in a new module, or an overseas module, and get the results.
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I was driving at 65mph and decided to coast and slow my speed to 50mph, as there is congested traffic ahead. I know the radar will adjust my speed according but I wanted a slower set speed anyway. I held the cruise control lever in its downward position (thinking it was going to cause the car to coast and slow) Oh Oh! This thing is applying the brakes hard! I instinctively press the gas but it kept decelerating, no affects at all except the tranny downshifting or engine revving. I couldn't tell which, the radio was loud and it happened so quickly.
Moral to the story- I guess I should have read the owners manual. The manual say every .75 second the lever is held down the cars speed will be dropped 5 mph. My question is- since the car was applying the brakes and I overreacted and pressed the accelerator at the same time, was there a possibility of damaging a component? I know these cars are engineered extremely well.
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I'm looking for a fully loaded AWD LS460 and haven't run across many with the dynamic cruise option. Was that option rarely chosen? It's time to add a second Lexus to the garage.
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I have a 2007 LS460 and one issue I have, which could be costly unless I'm paying attention, is the cruise control does not perform automatic downshifting like my Honda does. In fact, my speed can increase by about 10-15mph going downhill, which a couple of times I've been lucky to realize my speed is increasing and downshifted manually and sure enough there was a speed trap. I really don't like driving by luck, if you know what I mean.
Is there something that is causing this? I do not recall that it has ever worked correctly...
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My vehicle shows currently two awkward behaviors:
1) I can start the vehicle using the keyless start button without having to step on the brake pedal.
2) I can switch on cruise control. The green symbol appears, however, I cannot set a speed. The system simply seems to ignore that I press the set button.
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So my cruise is giving me issues, won't set the speed. Turns on and off no problem but set and resume do not work. However, turn off the car and then re-start it and the cruise works again. I know the radio is only up to 60k.
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My cruise control will engage but not maintain set speed. It slowly loses KPH, 10 KPH every 30 seconds. What to look for?
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When I first got this car about 2 months ago, my current speed would be displayed in the MFD when the cruise control was set to on (not activated and in use). For some reason now that no longer happens and it just shows dashes. The only time the speed is displayed now is when I am actually using the cruise control. Is there a way to get that thing back to showing my present speed like it did before?
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I have a 2006 santa fe with th 2.7. The tail lights light up both films on both sides when you turn the lights on. Now the cruise control will turn on but it won't set the speed. I changed the brake switch and i tried to put it in the same exact spot. The old one was not sticking or anything. Now I was told the switch might need reset or something. I looked everywhere for shorts and sealed them up. Checked all the fuses which all are good. So im not sure whats going on. Now when you press the brake the small fuse will burn out.
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When I turn my Cruise Control "On" it will light up green on my dashboard, However when I press the "set" button to set the speed nothing happens. It was working fine a few weeks ago. Could it be a fuse? If so what fuse? How I can fix this? 2011 Sonata
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I have a 2012 Hyundai Elantra and have noticed that my cruise control doesn't slow me down when I am going downhill, is this normal?
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Cruise control on, set at, say 65mph. I want to lower the speed to 60mph. Tap down... click-click-click-click-click and watch the set speed number drop to 60.... then pop right back up to 65 and the car accelerates back to faster set speed. This has happened more than once now.
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Not sure if this should be under the technical section but is there a way to modify the cruise control to be set to a position on the hsi and not based on the speed. After all it is all electronic.
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Is the drcc on the 2013 full-speed range or is it partial speed range? (will it bring the car to a stop or does it only work above certain speeds?)
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The cruise control on my 2013 works as I expected.
However the cruise control on my 2016 Sonata does not.
When driving at highway speeds (65 to 70 mph) in cruise control and the shifter set on "D" (drive) the transmission will down shift to 4th speed whenever I go down hill.
This might be intentional as a way to keep the car from exceeding the set speed, but I have never heard of this and it would seem to place more wear an tear on the transmissions.
Do the down shifting is engineered in or if it is a service problem that I need to have addressed...
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2012 Prius with 10K miles.
One of the features I really like over the '06 Prius is the ability of the cruise control to hold the set speed on downhills (until the battery fills up and it switches to compression braking "B" mode, but that's a different topic).
After taking it in for the 10K mile service, it no longer engages regenerative braking on downhills with cruise control set. This is on the same hills where previously it would hold speed.
Did Toyota do a software upgrade that disables this feature?
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Most of the time my speedometer isn't working. my cruise control works the same way. i've read that it could be the cruise control module or the variable speed relay.
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