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2004 Prius Cruise Control

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Posted by Mike Reshetar on July 8, 2004, 5:12 pm
I was wondering if the following is normal.

On a trip over the past weekend I used the cruise control while on some
stretches of highway. When I went to back/side roads that were winding,
naturally I had to hit the brake and the cruise control was no longer used.

After about an hour on these back/side roads I got back on a highway that I
could use the cruise. When I pushed up on the cruise stalk it would not
reactivate. No I never turned the car off. I had to reset the speed I

Is there a time limit built in that turns off the cruise control?

Thank you.


Posted by kari on July 9, 2004, 2:11 am
I don't know if this is the way that it is supposed to work, but mine does
the same thing. It seems like if my speed drops below about 30 mph, I will
have to reset my cruise speed.


Posted by Paul Neubauer on July 9, 2004, 2:47 am
This may be a standard thing on cruise controls or Toyota cruise controls.
I currently drive a Corolla and if the speed drops below 30 mph the memory
of the cruise control is gone. If I manage to stay above 30 mph, I can use
the resume feature.

I assume is a safety lockout to avoid problem such as Audi (I think) was
accused of some years ago (on 60 Minutes) where there were accelerations
of vehicles that should have been still. This problem was, according to
some, the result of an overly-eager cruise control system. If the cruise
is unable to engage below 30 mph, which is supposedly the case (I haven't
gone and tried to set cruise at, say, 25 mph) then that problem is eliminated.

Paul Neubauer, N9IOG
Ned Flat: "Why are you acting like this?"
Yakko   : "We're not acting.  We really are like this."
Wakko   : "Aren't we lucky?"

Posted by Mike Reshetar on July 9, 2004, 1:24 pm
 Paul, thanks for the insight. The Prius is the first Toyota I have owned.

On other vehicles that I have owned with cruise control no matter how slow I
had to go (such as backups in construction zones) once I got within a few
MPH of the set speed and hit the resume the cruise control would work. Of
coarse with these other models I could not set a speed lower than 35 MPH.
Like you I have not tried anything lower than 55 MPH on the Toyota.



Posted by Mike Reshetar on July 9, 2004, 1:20 pm
 Thanks, I couldn't find anything in the manual about it dropping the

Time to call the experts at the dealership.


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