Loss of cruise contol when engaged

[mav Addicted PP Member Find all posts View Profile Close mav]

Yup minimum speed for being able to activate the cruise control is 40kph. However you cant resume the original set cruise speed even over 40 if the speed at any point drops under a certain speed.! I'll check it out tomorrow but I know for sure if I stop at a red light and then get back upto speed I cant resume the cruise. I've got a feeling anything under 20-30k cancels any settings.

That is a rather odd function, I have not come across any other cruise controls that behave in that fashion. It will definitely give me the sh!ts having to reset the speed all the time.

[Brissy4me Junior Member Find all posts View Profile Close Brissy4me]

I believe if the speed drops below about 40 it resets the set speed.

[Squeaky Junior Member Find all posts View Profile Close Squeaky]

Some do and some don't. My brother has the same model but about 6 months newer - his will not remember set speed after dropping below 20 klms but mine remembers even after a full stop.

[speedcomm Senior Member Find all posts View Profile Close speedcomm]

I thought mine did it if I used the brakes to disable the cruise but I have actually taken a bit of notice and it is speed related or a drop in speed, It is a pain in the Ass and makes no sense to me at all. Mine does it every time.

[mav Addicted PP Member Find all posts View Profile Close mav]

I thought mine did it if I used the brakes to disable the cruise but I have actually taken a bit of notice and it is speed related or a drop in speed, It is a pain in the Ass and makes no sense to me at all. Mine does it every time.

This really makes no sense to me as the resume function is exactly that. The original set speed should be held in memory such that when the speed of the vehicle goes over the 40 km/h limit then a press of the resume button should restore the cars speed to the original set speed. this should continue to occur until the power has been lost to the cruise control electronics module.

If this is not happening then to my mind there is a fault with the cruise control.

[Addy Senior Member Find all posts View Profile Close Addy]

I thought mine did it if I used the brakes to disable the cruise but I have actually taken a bit of notice and it is speed related or a drop in speed, It is a pain in the Ass and makes no sense to me at all. Mine does it every time.

This really makes no sense to me as the resume function is exactly that. The original set speed should be held in memory such that when the speed of the vehicle goes over the 40 km/h limit then a press of the resume button should restore the cars speed to the original set speed. this should continue to occur until the power has been lost to the cruise control electronics module.

If this is not happening then to my mind there is a fault with the cruise control.

I agree why have a resume option then. The only time it should lose it is when ignition turned off or cruise turned off.

[StormyKnight Advanced Member Find all posts View Profile Close StormyKnight]

Summary of normal cruise behavoir... (For Toyota Prado!)
After cruise is set & active, if you hit the brakes or cancel the cruise, the set speed will be rembered as long as your speed does not drop below 40km/h.
Also if with the cruise active & your speed drops around 20km/h below the set speed, the cruise will cancel itself as well. However I also think it clears the set speed and as such resume will not work here either.

Resume is handy if you approach a slower car on the highway, & you have to slow. Once you have overtaken, resume will return you to your previous speed.

PS my VY commodore doesn't have this 40km/h issue & in the Prado it is a pain.

Cheers
Richard

[mav Addicted PP Member Find all posts View Profile Close mav]

Summary of normal cruise behavoir...
After cruise is set & active, if you hit the brakes or cancel the cruise, the set speed will be rembered as long as your speed does not drop below 40km/h.
Also if with the cruise active & your speed drops around 20km/h below the set speed, the cruise will cancel itself as well. However I also think it clears the set speed and as such resume will not work here either.

Resume is handy if you approach a slower car on the highway, & you have to slow. Once you have overtaken, resume will return you to your previous speed.

PS my VY commodore doesn't have this 40km/h issue & in the Prado it is a pain.

Cheers
Richard

Every cruise control I have used and that includes the VT Berlina will resume the set speed regardless of the vehicle dropping below the 40 km/h. Vehicles that I have had and still have that work like this are:

Ford AU2
Ford BA
Holden VT Berlina
Ford Telstar
Hyundia Sonata Levant
Four seperate DIY CC's from k-Mart installed in 3 seperate Telstars and one Toyota Corolla.

I regularly drive on cruise control even around town and set it for 60 km/h. I regularly drop below 40 km/h in school zones and simply hit resume to restore the car to 60 after the school zone, I simply use the accelerator to get the car above 40 then hit resume.

Here is a link to the AusCruise cruise control review which also states that the cruise control will resume the set speed after disengaugement, just read the Operation paragraph:

http://martybugs.net/reviews/auscruise.cgi

[StormyKnight Advanced Member Find all posts View Profile Close StormyKnight]

I've edited my post as I was meaning normal cruise behaviour for a Toyota Prado with the factory cruise control. If its doing anything other than what I have listed then its faulty.

The 40km/h limit is NORMAL behaviour on the Prado. It is designed this way. Why? I don't know as its a PITA.

And as I said on my VY it doesn't clear the set speed so you can resume again as long as you are over 40km/h again when you do it, even if you have dropped below 40km/h since cancelling the cruise.

Cheers
Richard

[mav Addicted PP Member Find all posts View Profile Close mav]

Okay now I have had time to play with the cruise control function on my new Prado and after reading the manual I believe that there is an inherent fault in the cruise control system being fitted. Whether this is a fault in the computer side or a sensor I am not sure but there is a definite fault where the set speed is not being retained in memory so that you can resume your set speed.

From reading other peoples responses I believe this is occuring in all the new 120 series Prados and we should all be sending in a complaint to Toyota to get this problem fixed.

Now to find someone to complain to who is high enough up the chain to actually get something done about it. If anyone has a contact I would appreciate a PM to let me know how to contact them as well.

[mav Addicted PP Member Find all posts View Profile Close mav]

Well I have had a response from my dealer over this issue and apparantly Toyota are aware of this problem, however my dealer was surprised that it has not been rectified on the latest Prados as it has been an isue for some time. He is passing on my complaint to the relevant people.

So if you have not made a complaint about your cruise control yet and are experiencing the problem of not maintaining its set speed in memory after being temporarily disenguaged. Then please notify your dealer so they can pass on the complaint to Toyota. The more people that do this the more pressure Toyota will have to do something about it.

Cheers

Mav

[Brissy4me Junior Member Find all posts View Profile Close Brissy4me]

Hey Mav,
Can we get a clarification on exactly what it is supposed to do? Some of the previous posts have confused the issue for me somewhat :?

[mav Addicted PP Member Find all posts View Profile Close mav]

Hey Mav,
Can we get a clarification on exactly what it is supposed to do? Some of the previous posts have confused the issue for me somewhat :?

Okay, it is suppose to do exactly as every other cruise control does and that is:

Once you have set your speed using the SET button it is suppose to place this speed in memory. Now if you temporarily cancel the cruise control by either of the following conditions:

1. Pulling the lever in the "CANCEL" direction& releasing it

2. Depressing the brake pedal

3. Depressing the clutch pedal ( manual transmission )

4. When vehicle speed falls below 40 Km/h but not by more than 16 km/h from the set speed.

5. When Vehicle Stability Control is activated

Then you should be able to resume your previously set speed by moving the lever in the "RESUME" direction and releasing it.


The only times the saved speed setting will be erased from memory is if the following conditions occur:

1. The cruise control is turned off.

2. The vehicle speed falls below the set speed by 16 km/h

[Addy Senior Member Find all posts View Profile Close Addy]

2. The vehicle speed falls below the set speed by 16 km/h

In any other car i have owned and sometimes the prado i can be doing 100-105 on the highway then pass through a town at 60 then hit resume and away we go. :?

[StormyKnight Advanced Member Find all posts View Profile Close StormyKnight]

2. The vehicle speed falls below the set speed by 16 km/h

In any other car i have owned and sometimes the prado i can be doing 100-105 on the highway then pass through a town at 60 then hit resume and away we go. :?

No this is when the cruise is active...i.e it is on, but the hill is too steep or your load too much & you loose speed. If you get down to 16km/h below your set speed the cruise will turn off & the set speed will be forgotten!

Trust me, I have a 1kzte, I know!