Want an official word from Toyota in how the 2015 Prius v cruise control works.

I just finished my 2012 Prius TWO lease and bought a new Prius v FIVE with advanced technology package. The cruise control is very different. Would appreciate an official word from Toyota in how the cruise should work.

* 2012 Prius TWO - Cruise at 65 MPH, use large adjustment to decelerate to 55 MPH when entering a city. Hold the level down until speed is 55 and release lever. Speed stays at 55. When exit city, use large adjustment and hold lever up to accelerate from 55 to 65 and release cruise ever. Speed stays at 65. This always work for the past 39 months.

* 2015 Prius v FIVE - Cruise at 65 MPH, use large adjustment to decelerate to 55 MPH when entering a city. Hold the level down until speed is 55 and release lever. Speed keeps going down to 45 and level off. When exit city, use large adjustment to accelerate to 65 and release lever. Speed goes all the way to 78 and then level off. This is very dangerous. The Prius v FIVE manual says large adjustment goes up/dn about 4 miles per second of hold time. The manual says ->
Large adjustment: The set speed can be increased or decreased continually until the lever is released.

At dealership, they interpret that after the lever is released, the hold time will still be executed fully up/dn before speed is level. This does not make any sense and the Prius TWO does not behave like that. All other Toyota vehicles I have driven 2001 LX470, 2003 SC430 all behaved like the Prius TWO.

So, please kindly clarify the operation of the 2015 Prius v FIVE cruise control large increment behavior.

Thanks!

BTW, the new vehicle (with advanced technical package) had a frozen instrument panel at delivery. I have to pull off the road and turn the engine off to rest the panel in order to turn off the GPS destination voice. Repaired after 2 days and they provided an update to the software and the frozen screen seem to work. Just in case this would affect the cruise control.

 

Do I disable the radar cruise control via the button in the steering column (lower right) in order to regain the normal cruise control?

 

1st part understand. I turn on normal cruise and then push level away from me to achieve constant speed cruise and disable radar cruise.
The second part seem like I can still use the radar cruise and I can up/db speed and release the lever by watching the speed on the screen with the two cars and the speed number on the right and not watch the regular speedometer. When I release the lever, the set indicator will come on.

Thanks!

 

I need to go check the suggestions and then report back. Looks like the laser cruise of the Adv. Tech. Pkg is creating a new scenario for the cruise.

 

I test the part when the laser cruise is turned off and confirm that the regular cruise setting is working with large increments. I still need to test the part which the laser cruise is turned on.

The instrument panel is defective definitely, dealer cannot reproduce the problem and they could not fix it. I got it to stop working one day and I drove to the dealer and when I hit the park button, the damn thing worked again. Next day I saw it broke again and I went to the dealer with foot on brake until the service manager came and saw that. Then I put it in park and it was still broken. They have to order the entire module to replace that. I would not buy this advanced tech package next time as it will break and if it breaks after warranty, it'll cost thousands to replace. Do not think it is even repairable. The navigation is definitely not at par with my Garmin in which I can have 2 free map upgrades per year. Will not even recommend this navigation option. Go for the TWO model. Anything above that is a waste of money. BTW how much will it cost to upgrade the map every year with the Prius navigation?

The so called premium sound is no premium at all. All my music (SD card) sounds the same.

Also, my gas mileage is shown as 35 (first tank)?? My model TWO was running at 53. May be it takes time to break in? Can somebody shed some light on this issue?

Overall, this brand new and defective Prius v FIVE has destroyed my confidence with Toyota. I drove the lease TWO for 39 months and no problem at all.

 

Do not know what you mean by evidence of defective. The panel is frozen after drive for a few minutes. All control not working. Also do not know what you mean by replacing it doesn't fix it. The Lemon Laws says they are 3 chance to fix the same problem. They try to fix it once (update software) and now order the entire module for replacement, that is twice. Hopefully do not have to go to the third round.

 

This is true for normal cruise. But for the laser cruise (Adv. Tech. Pkg), the default is laser on and control how close you want to be with the vehicle in the front. Combining with the cruise, that can be complicated.