Prius (2010-12) :: 2015 - EV Indicator On At 40 Mph Driving Downhill?
Aug 5, 2015
I think that the EV indicator works very strangely on my 2015 Prius. Consider this: I'm driving downhill at 40mph and the EV indicator is on. As my speed increases (coasting the whole way - using neither the accelerator nor the breaks) and crosses 46mph, the EV indicator goes out. Why? I saw somewhere in the forums that 47mph is too fast for the motor-generator, and so it switches off --- but my real-time mpg indicator still shows 100mpg, which wouldn't seem to be the case if the Internal Combustion Engine has just kicked in. Why the EV indicator goes out? Should I even care?
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My 5 month old 2015 Prius develops a problem. Once in a while when driving at night, the door open indicator and dome lights will come on for a moment and off right away. I assume it is cause by a loose connection or faulty sensor. Before I take the car to the dealer, is there something I can check?
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I've owned a 2014 Prius Four (not IV, Roman numerals were for model year 2010) w/o Nav for just about a year now. I've encounter this mysterious condition three times now where when I turn on my car, all I see on the front displays are the READY light on the far left and the mini-display that shows the shift pattern.
* Both the speedometer/fuel gauge display on the left of the shift pattern display and the "Hybrid status" display on the right of the shift postion display are OFF.
* The car operates normally (it's not in a limp-home mode).
When I first encountered this issue and reported it to my local dealer, they suggested I take a video of it with my smartphone. I did so the car (and a copy of the video) is now at the dealership.
The second and third times this issue came up, I took videos and did some additional testing.
- When these two displays are OFF, there is no backlight to the climate control LED display underneath the stereo...
- I normally drive the car with the headlamps in "AUTO" mode. When you shift the headlamp switch to "DRL off", the two missing displays automatically power on. In any other position (Auto, corner marker lamps only, or headlamps ON position) the two displays in question turn off.
- The issue isn't with me accidentally turning the dimmer switch too low. When the dimmer switch is set to max low and the dash light sensor is covered (emulating complete darkness outside), all three displays on the dash (including the shift position display) are barely visible/look off. As the service advisor saw in my video, that's not the case.
This is clearly a safety issue ("you cannot tell how fast you are going" and "you cannot tell easily how much gas you have left without going through the infotainment display) so for now the dealership at least seems to be on my side in that something needs to be repaired. The good news is that now that the issue has been documented in my service history, they did comment that it will get fixed eventually even if the issue comes back after test. For now, the dealership is stumped so they asked Toyota for guidance on what parts to try replacing.
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I have 2011 RX AWD and noticed when driving downhill and braking, car will shake. It feels like the wheels are shaking but the steering wheel does not. Is it rotors or something else?
Also RX is certified pre owned warranty for another 30k miles and I want to do alignment on it but not sure if warranty will cover that ?
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How the synergy drive is working. Why when coming down on a long down hill (mountain pass for example) the car stays at high RPM ? That usually happens when battery is charge to its MAX of 80%.
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While driving a mountain road (hwy 17) going downhill this morning I lost power braking and power steering and a got the following error message on the display
TRANSMISSION P LOCK MECHANISM
PARK CAR ON FLAT SURFACE AND APPLY BRAKES
I was able to stop the car on a flat area. I turned the ignition off and then restarted the car and the power steering and brakes came back, but the red triangle remained. I drove to the Toyota dealership and left the car for service.
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Twice now, while going downhill hill (steep grade on freeway) my Prius has revved up to over 4,000 RPMs with the cruise control set at approximately 65 mph. The noise of the engine was my tipoff and I immediately had to turn the cruise control off. This just doesn't make sense to me! Seems like this could be a potential problem for those of us utilizing cruise control!!!
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2012 Prius with 10K miles.
One of the features I really like over the '06 Prius is the ability of the cruise control to hold the set speed on downhills (until the battery fills up and it switches to compression braking "B" mode, but that's a different topic).
After taking it in for the 10K mile service, it no longer engages regenerative braking on downhills with cruise control set. This is on the same hills where previously it would hold speed.
Did Toyota do a software upgrade that disables this feature?
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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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Why my 2010 Prius has 3 times now failed to stop when brakes were applied on a steep downhill in slight rain? Happened a year apart with no slick road and with tires both new and old. I pull up to a stop sign on a grade, apply brakes, the car slows, then there are metallic noises and the car glides 3-4 feet before stopping. I'm lucky no car or person was in front of me. Honestly not a skid at all. Service tells me I don't know about anti-lock brakes but I've driven with them on cars for many years with nothing like this.
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The cruise control on my 2013 works as I expected.
However the cruise control on my 2016 Sonata does not.
When driving at highway speeds (65 to 70 mph) in cruise control and the shifter set on "D" (drive) the transmission will down shift to 4th speed whenever I go down hill.
This might be intentional as a way to keep the car from exceeding the set speed, but I have never heard of this and it would seem to place more wear an tear on the transmissions.
Do the down shifting is engineered in or if it is a service problem that I need to have addressed...
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My 2014 GX has been great except for one annoying problem; with BSM mode enabled, the passenger side BSM indicator randomly lights solid when driving down the road with NO vehicles around me (driver side indicator works perfectly 100% of the time). Does not appear to be correlated to temperature, day/night, humidity, speed, or conditions mentioned in the manual. Other current RX and GX owners I know don't seem to have the issue.
Can the BSM system be calibrated or is the detection program burned into the individual sensors and control module such that the system cannot be re-calibrated? Does a GX BSM system publication exist? I have several photos illustrating the problem. Reported to dealer. The dealers conversation with Lexus was that it is not a perfect system with no explanation as to why one side would have the issue but the other wouldn't. Below is the online reference that Lexus provides. The BSM feature is a very nice one except for this intermittent issue.
Link to Lexus Driver's Online Manual - BSM (Blind Spot Monitor) section pg 347 - 356. [URL] .....
FCC ID : OAYSRR2A Link to document detailing BSM [URL]...
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I was on the highway yesterday when the red triangle went off and the screen said Problem. I babied my 2008 Prius to the dealer. They said the 12v battery was bad. I should have just gotten the yellow top in last week like I wanted but oh well. Here is the problem, today it did it again. It first happened at 70 mph but today it did it first at 15 mph then pretty much stayed on until I did not accelerate for a while. No noticeable performance issues, just the warning indicator. I did notice the noises after shutdown are sounding different than before last week. I also put a code reader on it both without running and on a test drive and no codes showed. What is going on?
More info: Just hit 100,250 miles. Purchased on March 17, 2008. Went in last week before the 100,000 miles for a check up and ended up with $1,000 for a coolant pump (both now, other coolant pump was replaced within the last 6 months). Also got: break fluid, belt, break alignment, oil change, tires (this I was expecting hardly passed state inspection in March), possibly something else.
I have been doing the oil changes since 15,000 miles, filters, pcv (or pvc whichever), all normal items. Problem free until I have them do a check now issues. So to recap non normal items done: blower motor in 2009, radio replacement in 2008, coolant pump in Mayish, other coolant pump and 12 v battery last week. Read more : [URL] ....
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I've been having an on going issue where my Pirus will start beeping but there is no indicator light I can see showing any kind of issue. It will start beeping during startup and after driving for a while, no exact time something like after 25~30 mins. It sounds like the seatbelt beep but louder and both will beep when my wife does not have hers on.
I replaced the Aux battery(was old needed to anyway) with a yellow top but that didn't fix it. And again there is no indicator on the dash or display showing issues no red or orange triangles. Checked the prius's diagnostics but no codes appear under the diagnosis check I or II, sycheck mode or LAN monitor.
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I got the check hybrid system warning message and then i reset the indicator by turning off/ on the car for 3 times in a row. Now I noticed the Eco light never came on, even though I was in ECO mode and was most often driving outside the power zone.
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How do I do this?
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I have a Gen III Prius with 13,000 miles. It is less than a year old and I just got the Hybrid Malfunction indicator...I'm a bit upset about this and am wondering what it means. I'm not going to be able to take it into the dealership until next week, and was hoping to get some information about the indicator. It's a blurry shot but it is an exclamation mark with wavy lines below it.
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On my GIII Prius, if I leave the headlights on and power off the car they appear to still stay on.
Is there supposed to be a warning sound indicator?
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I just have my 2013 Prius C3 for two months and few days back I noticed that the Slip Indicator light blink a few time when I went through pot hole/uneven road (low speed, ~20mph). In the same time, I can hear as if there is a piece of metal sheet somewhere in the car vibrated. Is this normal?
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I have a 2010 Prius IV. Yesterday, a new indicator started to flash after I turn off my car. It is an image of a car and lock. I checked in my manual and it appears to be related to immobilizer system. I have the smart key and it is flashing this indicator and beeping with both smart keys. I called a Toyota dealer and it sounds like it is just my security system activating after I turn off my car. The man said it was normal and it should have been doing this long-term. My car has never beeped and flashed this indicator until yesterday. Is it something I should be worried about? Does this mean my security system has never been activated until yesterday???
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I let a friend drive my car for the first time today. Before today I always had a key with a slash through it that blinked until I started the car. Now that has disappeared and the hybrid lock indicator light is on instead. My friend left the car on, by mistake, while she went into the store. She tried repeatedly to lock it, and of course it wouldn't. Did this change something in my indicator lights?
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