Prius (2004-09) :: CEL Came On In Cruise Control Mode
Dec 23, 2014
Very very odd thing happened. Driving up from Houston to Colorado yesterday. Snow tires mounted in preparation for the snow in NM and CO. Around 300 mi into the trip, the CEL (check engine light) came on. I was on cruise control, I did not notice the lack of power. Checking the battery, it was in the purple. I first opened the gas cap and screwed it back in. I figured the change in elevation or temperature may have had something to do with the CEL. Nothing. Gas tank was a quarter full.
At Lubbock, I pulled over and filled up. I played with the rubber gasket on the gas cap but decided it was going to be more trouble than I was prepared to deal with, without any tools. CEL stayed on for another 30minutes or so while I navigated through the city, covering another 20 miles or so. After a pitstop to pick up OJ, I started the car and the CEL was off.
Here are the variables:
Elevation delta - +3000 ft
Temp delta - -10F
The only thing I can think of is that the hybrid battery is getting long in the tooth (2008 MY, 103k mi), the wind in the high plains chewed through the battery power, and the long length of being in low charge got the ECU to confuse itself into thinking that the hybrid battery has bad cells, which it probably has a few weak cells.
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About 2 months ago, I was driving and my cruise control wouldn't engage on the highway ... I happened to be right near the dealership so I immediately returned there .... didn't turn off the car, but the tech put it in P while I was waiting. I was so ticked off because I thought that may have 'reset' things, and of course when the tech took the car for a drive (in D) the cruise worked fine. We of course never confirmed that the cruise control didn't work.
Today, the same thing happened at the same place, so I returned to the dealership, calling them on the phone, and informing them that I would not turn the car off, or allow the car to be put in park. The service manager met me out front and we went for a quick ride so I could 'prove' that the cruise was inoperative. He confirmed that it was not working, and why. For some reason, I glanced at the dashboard and noticed that the car was in 'B' mode. I mentioned that to the manager and he noted it as well. I must have bumped it somehow while driving as I NEVER use B mode for anything ... ever. I said I wondered if that was the reason, and put it in D, and lo and behold, the cruise worked again.
I haven't checked the manual yet to see if this is stated there, but the cruise control is inoperative if the car is in B mode. Or at least it seems that that is the case. Other than the car being in B mode, it acted just like it always does, and since I was on the highway, I never noticed the braking effect that B mode gives you.
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We have 2 trips coming up this summer (600 miles and 1400 miles), these will be my first long distance with the Prius.
Did anyone tested fuel economy using the cruise control in ECO vs NORMAL vs PWR ?
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I am one of the few that has ADC on my 2004 V10.
Occasionally, 3 times now. I press the ON button and the cruise control does not initialize properly. After a while it will say "Temporarily unavailable" . The problem is that then there is no power any more.
I stop on the hard shoulder of the motorway, engine off, engine on and all is reset, ADC works ok and full power is restored.
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Curiosity question. I've noticed that on a downhill of a couple miles, especially in "braking" mode or with the cruise control on, the motor/generator and engine are used to keep the speed down and the battery gets charged to the very top quite quickly. That's good!
On a really long downhill, will the motor/generator still be used for braking and the excess electricity discarded to keep from overcharging the battery?
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My vehicle shows currently two awkward behaviors:
1) I can start the vehicle using the keyless start button without having to step on the brake pedal.
2) I can switch on cruise control. The green symbol appears, however, I cannot set a speed. The system simply seems to ignore that I press the set button.
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So the problem occurs while I am driving with cruise control on . Suppose I am driving at the speed of 80mph with 1300rpm, few seconds after I come downhill the rpm shifts to 2000 and comes back to 1300. Now I understand that the rpm will increase as I go up in order to maintain the speed but this problem occurs once I come downhill
And today also while driving without cruise control on I experienced the similar problem. I got a SE V6.
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I own a 2013 C-Max hybrid and I notice that during long drives if i engage the cruise control, I don't get as many EV miles as I do when I have my foot on the gas pedal and take it off when i have reached my desired speed. Does EV mode not work in cruise control? My feet start to ache a bit with constantly having to press and release the gas pedal just so that I can generate some EV miles.
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Mine just quit on me. Nearly 180K. 2008 Gen 2. I watched that youtube video, they were working on a Corolla. Seems easy enough, it's a pricey part though. It's called an airbag clock spring. I don't think it's the stalk. The button feels the same as it ever did.
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My Prius is a 2009 with 30,000 miles.
Have just begun to have an intermittent problem with the cruise control (has happened twice in past month -- never happened before).
Turn cruise control on, but it will not set. Turning off cruise control and turning it back on didn't solve the problem. However, stopping and turning the vehicle completely off and turning it back on did solve the problem. The second time this occurred (this morning), the engine sounded like it was revving and seemed somewhat sluggish (not what you'd expect if the engine was revving). Not revving real fast, but noticeable.
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I feel like I am going crazy but it feels like when driving up long steep 6-7% grades if I set the cruise control for 65 I can go 65 the whole way. If however I just use the gas peddle the car bogs and slows enough to get passed by semis (maybe not that bad but it feels like it). Is there a rational explanation for this behavior?
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I noticed today that my cruise control quit working. Car has about 58K miles, the "cruise" light comes on when the button on the end of the switch is pushed in, but the device itself doesn't work.
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In the last 5,000 miles or so, my 2007 Prius has been really burning oil and intermittently the cruise control stops working. No warning lights. Car sounds and feels as usual. 235,000 miles on it. Water pump, thermostat and drive belt replaced 3/2013. Check engine light has been on since about then and diagnosed then as either catalytic converter and/or oxygen sensors and I chose not to fix those as was told not necessary until.
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I bought a 2008 Prius with 1800 miles, no carfax trouble history On the way home from purchasing the car,as is, 180 mile trip, the red triangle, check engine, VSC and other symbol came on and the cruise control shut off Took it to a Toyota dealer the next day and the scan showed no codes. They could not explain it but said not to worry. Now that its warm weather, when this happens, the AC shuts off also I am at a loss for what to do, obvioulsy something is wrong. BTW, I replaced the 12 V battery and notice that the duct fromthe hybid battery was missing. Could this contribute to the problem?
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I can't seem to activate cruise control on my 05 Prius. I went to the dealership and they checked the car out and said it's all good, cruise works and everything is fine, but I can't seem to activate it.
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I think my cruise control switch is bad. Is there a simple way to remove it without taking of the steering wheel.
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I had the cruise control set on the speed limit going up a hill. Half way up, the cruise control dropped as did my speed from 70 to 56. There were no warning lights but the battery meter was in the one bar pink range. I managed to continue up the hill at 56 mph by flooring the accelerator. When I got to the top and started to regenerate power to the battery, I regained power and speed. I am discussing a 2008 Prius with 89k miles. What the issue may be ( like battery pack declining efficiency)?
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About 2 months ago ('06 Prius - 386K) 12v battery was replaced - red triangle disappeared and everything has been fine. ( I have driven the car about 7K since replacement).
Now on my 2800 mile trip, the following is happening. With Cruise Control on and functioning - freeway traffic comes to an almost halt (5-8 mph) after traffic picks up Cruise Control light on dash is flashing and will not function. (Pull over and re-boot the Win95 machine - and everything is back to working until next slow down).
I am now driving on a service road to my hotel at approx. 25mph and as I go over every patch in the asphalt my Traction Control light comes on and then off and it makes the car act like it is on ice ( and yes the Cruise Control light is back to flashing).
On my journey on this 5 miles of access road then my stereo volume starts going up and down all on its own. If I try turning the volume knob nothing happens. I push the knob in and then push on the knob to come back out and then the volume knob works and then the volume control on the steering wheel starts to work as well.
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I just returned from a 4K trip through 7 states and my cruise control will go batty and make you pull over and re-boot the car. Basically I am cruising down the interstate with cruise control on. When I come into a town I will either pull the cruise lever forward or step on the brakes to disengage it.
The traffic comes to a stop or slows to a crawl for a short period of time. Once the traffic starts to move again and we are back to highway speeds I can no longer use the cruise control because it is intermittently flashing on the dash as a malfunction. The only time it doesn't do this is when I am slowing down if I turn the power off to the cruise control system.
I stopped in the middle of my trip at two different dealers and there were no codes stored. One dealer charged me a diagnostic the second didn't after I showed him my receipt from the day prior from the other dealer but then he wanted to sell me a brand NEW MFD.
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My 2005 Toyota Prius gave me confidence. Here's what happened:
I was driving on the Interstate with the cruise control set at 70 mph. Seeing traffic stopped ahead, I applied the brakes for a moment to slow, then released the brake to coast. Much to my surprise, the cruise control was still engaged and the car accelerated. I applied the brakes again, manually turned off the cruise control, then was able to coast. I drove for another half-hour without incident until the following afternoon when I drove again, experiencing a much more serious problem.
I had just turned left, and was straightening the wheels when I heard, and felt, a loud "snap" in the steering wheel, immediately upon which I knew the steering wheel was disconnected and I could no longer steer the car. Very, very fortunately, and only because I was already nearly stopped, I was able to stop the vehicle without incident.
However, I immediately recognized that, had this happened in almost any other scenario than being nearly parked, the outcome would have been markedly different. The steering wheel is completely loose, not controlling anything, and all the many steering wheel controls are equally disconnected, including the driver's air bag (SRS), something that I would have needed, but wouldn't have worked, had I crashed into oncoming traffic or an Interstate median.
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I recently changed my oil, transmission fluid, and both coolant systems. I have a 2008 Prius, and I can hear this noise coming from the engine when I accelerate between 50-70 MPH or have the cruise control on.
I had low coolant in the ICE system earlier (didn't know there were two separate systems) and I had the red triangle light up for a moment and "Problem" appear on the LCD screen followed by an orange thermometer. I pulled over and let it cool down, and babied it home and added coolant.
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