Cruise Control seems to work intermittantly

Only if you drop below 25MPH should it forget the set speed.

Find a repeatable situation where it forgets when it shouldn't, then have a service tech do a ride-along while you demonstrate...

 

<div class='quotetop'>QUOTE(Tmash @ Jul 21 2006, 07:52 AM) [snapback]289874[/snapback]</div>

Yes - same with me. I've found that when on c/c you have to be careful to keep your foot off the pedals because if you brake, or speed up, it cancels the c/c.

 

I use CC all the time, maybe too much, and have never had this problem. It won't "catch" under 25 MPH and will sometimes lose it if you try to go up a hill at 25. Once set and cruising, a bump up increases speed by 1 MPH and a bump down does the opposite. Cruising above 25, say at 55, I can step on the brake pedal and slow almost to 25, then hit the Resume and CC takes me back up to the previously set speed.

Have it looked at.

I wish we had more control over the CC, like giving it a delta range, so speed could vary over a bit wider range before heavy correction kicked in. I'd also like a tight mode where you could set the speed and it would boost and use regen as necessary to maintain a speed both up and down hills.

 

As an added note if you are using the B position on the gear shift . . . cruise will not work.

 

<div class='quotetop'>QUOTE(Tmash @ Jul 21 2006, 08:52 AM) [snapback]289874[/snapback]</div>

I've had the same experience. I can never tell whether I am going to successfully resume after hitting the brakes. This is not in situations where I would have dropped below 25 mph. I think it might have something to do with using the CC stalk to change the speed up or down one mph at a time. I might have been doing that prior to braking, or something, and it's gotten confused. Or probably it's me that's confused. :mellow:

 

<div class='quotetop'>QUOTE(PriusRos @ Jul 23 2006, 11:01 AM) [snapback]290961[/snapback]</div>

Same thing happening to me, although it's intermittent. I've hit resume and had it work , then the next time after tapping the brake pedal, hitting resume did nothing. Tested this at speed over 25MPH, so there's no logical reason why it shouldn't work (I've found most cc work about the same, just differ slightly in their "trigger" ranges for when you lose/gain speed due to terrain).

 

I think this is a "Toyota" thing. My wife's 2000 Lexus does the same thing. In the owners manual for my 2006 Prius (pg 158), it states that the set will be lost below about 25mph. On my 1998 Chevy S-10, it retains the cruise setting until the engine is shut off or you switch off the cruise.

 

My cruise control does the same thing, but I was figuring it was time based. If I am cruising and cancel (either by hitting the brake or pulling the lever), if I resume within a minute or two, it seems to resume fine. Otherwise, I need to use the 'set' option again. Braking, of course, turns off cruise control, but accelerating (like to pass) doesn't usually cancel cruise control settings (keeping cruise control on at the original speed setting). I seem to remember it working that way in mine (although I haven't explicitly looked for it).

David