Cruise Control Not increasing Speed

[Davebtw]

Apologies if this has been asked before. I've just got my Corolla and have tested out the adaptive cruise control. Once set, I'm trying to increase the speed by pressing the +1 red button once but nothing happens. If I press it twice the car just starts to accelerate until i hit the brake again. Anything I'm doing wrong? I was under the impression that pressing once would increase the speed by 3mph each time?

[john p williams]

9 minutes ago, Davebtw said:

Apologies if this has been asked before. I've just got my Corolla and have tested out the adaptive cruise control. Once set, I'm trying to increase the speed by pressing the +1 red button once but nothing happens. If I press it twice the car just starts to accelerate until i hit the brake again. Anything I'm doing wrong? I was under the impression that pressing once would increase the speed by 3mph each time?

What does the Handbook say David ?

[AndrueC]

Pressing + or - adjusts the target speed up or down to the nearest multiple of 5mph each time.

So if you have it set at 57, pressing + twice will take you first to 60 then to 65, - will first take you to 55 then 50.

If radar control is active all this can be dependant on the vehicle in front.

[Red_Corolla]

12 minutes ago, AndrueC said:

Pressing + or - adjusts the target speed up or down to the nearest multiple of 5mph each time.

So if you have it set at 57, pressing + twice will take you first to 60 then to 65, - will first take you to 55 then 50.

If radar control is active all this can be dependant on the vehicle in front.

You can also set the non-adaptive mode and that works in 1mph increments. Hold the button down a couple of seconds when turning the cruise on.

[Davebtw]

59 minutes ago, AndrueC said:

Pressing + or - adjusts the target speed up or down to the nearest multiple of 5mph each time.

So if you have it set at 57, pressing + twice will take you first to 60 then to 65, - will first take you to 55 then 50.

If radar control is active all this can be dependant on the vehicle in front.

Im aware of this however pressing once does nothing. Pressing twice increases by a lot more than 10. 

[Catlover]

Are you sure pressing once “does nothing”. If the car is doing, for example, 53mph when you activate ACC pressing once will take you to 55…… slowly. Out of frustration if you press it twice it could take you up 2x5mph, and that would be with a bit of zip.         
Sometimes these “gadgets” do not do what “we” want them to do, but what they are programmed to do.

[nielshm]

Can cruise control adjust speed according to road signs? My car does'nt, but it that was a option, it could give the impression that some thing is wrong, and not working properly. 

[Catlover]

8 hours ago, nielshm said:

Can cruise control adjust speed according to road signs? My car does not, but it that was a option, it could give the impression that some thing is wrong, and not working properly. 

In use of my Prius the answer would be NO. 

I find that some roadside speed limit signs do not get shown in the car, not due to any lack in Toyota software/hardware but purely due to not in field of vision..... maybe foliage has grown over it, a branch covering it, covered in road muck, even badly positioned in the first place, maybe before in-car cameras came popular.  As such, it is my opinion, to treat in car gadgets as aids. 

[Roy124]

2 hours ago, Catlover said:

In use of my Prius the answer would be NO. 

I find that some roadside speed limit signs do not get shown in the car, not due to any lack in Toyota software/hardware but purely due to not in field of vision..... maybe foliage has grown over it, a branch covering it, covered in road muck, even badly positioned in the first place, maybe before in-car cameras came popular.  As such, it is my opinion, to treat in car gadgets as aids. 

Worst case I had was when I passed a pair of 20 signs oriented to be read from 10-11 o'clock if you slipped to the left.  

When we get speed sign speed limiting that could be a real bummer. 

[AndrueC]

5 hours ago, Catlover said:

In use of my Prius the answer would be NO. 

I find that some roadside speed limit signs do not get shown in the car, not due to any lack in Toyota software/hardware but purely due to not in field of vision..... maybe foliage has grown over it, a branch covering it, covered in road muck, even badly positioned in the first place, maybe before in-car cameras came popular.  As such, it is my opinion, to treat in car gadgets as aids. 

And if you have sat nav the car treats that as the authority and regards speed limit signs (if it sees them) as a temporary override. Hence my annoyance when my corrections to the Here maps were reverted just before I assume Toyota took their six monthly copy of the DB.

Speed limit signage was relaxed some time ago to allow authorities to reduce the number of signs. An example of that (my road again) is where the A422 (single carriageway) leaves the A43 (dual carriageway). Go back twenty years and you'd need to have speed limit signs as you leave the roundabout onto the A422. That is no longer the case because both roads are NSL. Even though the effective limit drops from 70 to 60 the law doesn't require speed limit signs.

[camellia30]

19 hours ago, Davebtw said:

Apologies if this has been asked before. I've just got my Corolla and have tested out the adaptive cruise control. Once set, I'm trying to increase the speed by pressing the +1 red button once but nothing happens. If I press it twice the car just starts to accelerate until i hit the brake again. Anything I'm doing wrong? I was under the impression that pressing once would increase the speed by 3mph each time?

I guess you mean the +RES button.

Sounds like resume behaviour, rather than + behaviour.

Mine misses presses on those buttons all the time, as if the switches are sampled too slowly. So that might account for the 2 presses, but it doesn't account for the big jump in set speed.

The manual seems to suggest a long press for large adjustment is only on the -SET button, but it might be on both.

 

[AndrueC]

I've not had any problems with those buttons myself but I've lost count of the number of times I've cancelled CC instead of resuming it. They are badly designed buttons. I've posted previously that they should be raised rocker buttons with small dimples to make them more tactile.

My Jazz steering wheel buttons were similar to game controller buttons and you always knew where your fingers were resting.

 

Mind you that image also reminds me that the HVAC system used a touch sensitive area rather than physical buttons and that was not a good choice.

[Cyker]

15 hours ago, nielshm said:

Can cruise control adjust speed according to road signs? My car does'nt, but it that was a option, it could give the impression that some thing is wrong, and not working properly. 

The Mk4 Yaris has an option to link the cruise control to the RSA, but I daren't turn it on as the speed limit sign detection is wrong often enough I can't rely on it to be accurate!

 

[Bozz]

21 hours ago, Davebtw said:

Apologies if this has been asked before. I've just got my Corolla and have tested out the adaptive cruise control. Once set, I'm trying to increase the speed by pressing the +1 red button once but nothing happens. If I press it twice the car just starts to accelerate until i hit the brake again. Anything I'm doing wrong? I was under the impression that pressing once would increase the speed by 3mph each time?

I've experienced this response from the ACC when trying to respond to smart motorway changing speed limits. Have been shocked (and shocked my passenger) at the rate of acceleration and deceleration when trying to increase and reduce the set point. I guess that's because in previous cars the rate doesn't multiply with each press of the set or res button!

[Red_Corolla]

I much prefer to raise the speed with my foot and just push the set button again once I'm there. In fact, I have to do that if I'm using ACC, to get the speed just where I want it. Stupid that you get 1mph increments with basic cruise but 5mph with ACC. I still like the ACC for A-roads where you're following the vehicle ahead and the preset speed is just a ceiling - that's the scenario where I'll use the + button (where I'd like to go faster but can't for the time being).

[twintopp]

as Red-corolla says i speed up/ slowdown to the desired speed and then activate acc, and coudn`t say that i have had any problem with the buttons , they do what they are supposed too.

[Woofwoof]

Can you long press the + and - buttons for a 1 mph increase on acc like other manufacturers?

[Stopeter44]

On 11/20/2021 at 9:49 PM, Woofwoof said:

Can you long press the + and - buttons for a 1 mph increase on acc like other manufacturers?

I was wondering about this, after reading this thread. Today I did my first real world test of ACC on the autoroute and also on country road (call it a B road). 

Up till now, after reading this thread, I though that I could only get 5 kph (in the UK, it would be 5 mph) adjustments to speed, through the +Resume or -Set button. In my previous 208 I would turn on the CC and just press +Res until I reached just over the the speed I wanted to set. On the autoroute, that would be a long press on +Resume until the speedometer shows 115 kph then short presses on -Set to knock back to 113 kph, which according to the GPS gives me a real world 110kph.

Well, in ACC, it's exactly the same. I found the ACC brilliant on the autoroute but on the B road where the limit changed between 70 kph and 80 kph too often, then using the ACC was too much of a distraction.

[Roy124]

On 11/9/2021 at 6:11 PM, AndrueC said:

I've not had any problems with those buttons myself but I've lost count of the number of times I've cancelled CC instead of resuming it. They are badly designed buttons. I've posted previously that they should be raised rocker buttons with small dimples to make them more tactile.

My Jazz steering wheel buttons were similar to game controller buttons and you always knew where your fingers were resting.

I missed this post.  I made exactly this observation and suggestion to Toyota UK, it was well received.  I was loaned a Yaris and its controls had ridges and were positive.  

Then I saw the new Corolla still using a job-lot of the old design. 

[Kental]

On 11/9/2021 at 7:54 PM, Red_Corolla said:

I much prefer to raise the speed with my foot and just push the set button again once I'm there. In fact, I have to do that if I'm using ACC, to get the speed just where I want it. Stupid that you get 1mph increments with basic cruise but 5mph with ACC. I still like the ACC for A-roads where you're following the vehicle ahead and the preset speed is just a ceiling - that's the scenario where I'll use the + button (where I'd like to go faster but can't for the time being).

Our 2021 Yaris adjusts in 1 mph settings, why can't they be consistent?

[Cyker]

The Yaris system is newer than the Corolla one - I assume Toyota took onboard complaints made and factored it in in the newer cars. Presumably they can't just retrofit the changes into older cars due to the strict homologation rules, without going through the full homologation process again.