@@HEVTech1 what does it mean if my bars go down to 2 bars? Hybrid battery is about 3 years old. 2014 Prius 147, 000 miles. Runs good and I keep it maintained.
@@terrytorres7075 it just means you hybrid battery is low on charge. This can happen naturally in many different scenarios. It generally does not indicate a problem unless you are consistently seeing it drop to two bars and very quickly.
I found this channel 8 months ago and I bought my reader. Never got around it and I was desperately looking for this video. Thank god I found it.. honestly the best video for ALL PRIUS OWNERS! thank you. Changed my prius for my dads… they never had a fan filter the person I purchased it from. The battery gets so hot that it only Prius on gas during stop lights in the summer!! Now this app will save me the trouble.
As soon as I get my battery fan checked tomorrow, as it is working but there is no power coming in from the plug. I will download this awesome app. Thanks
This is very helpful. Thanks much for the video. I was thinking of getting a corolla cross hybrid here in the Philippines and the temperature here goes up to 40C or 105F (most of the time)
Hello, thank you so much for this info. It was the first very hot summer day and I drove my Toyota hybrid (Nimh) with AC off. After a while I noticed the ic-engine wouldn't turn off and electric driving was not possible. After parking in the shade with AC blasting and cooling down the cabin, the car would drive again in EV mode. (Till it heated up again, because AC was off again). I was figuring already it had something to do with the battery temps and some sort of safety program kicking in to preserve the battery health. Did I damage the battery? Or did the system do its thing to play it safe? According to your paper up to the 2 minute mark in the video, what would you say what temps was the battery seeing? Was the system already imposing a discharge limit? (Fuel consumption was getting worse). After this experience I'll use the AC, but only because of the battery. No other reason.
Hi, have you ever noticed that your Toyota hybrid _occasionally_ starts the engine when you activate cruise control? And in turns it off when you deactivate cruise control? I have a hybrid Camry. It occasionally does that. I then have to keep constant speed with the gas pedal.
I have a 2005 Prius. Diagnosis was done at the dealership it says my fan is off, then block 1,2,3 becomes weak Now my battery goes down to 2 pink bars, doesnt want to accelarate and the car doesn't want to turn off. At this point do i need to change HV battery pack? I have never change the battery since i got the car in 2010. I am having problems finding someone who can take care of my car.
Check online mobile after-market battery replacement, they will come to your address and rep,ace in 45 min, charging you, (2024 rates) between $2K-3K, while Toyota dealership will charge you at least two times more. Sure above cheaper price is for refurbished cells, while Toyota - for brand new hybrid battery
It seems NiMH batteries like 80 degrees F environment for 'storage' I am considering a solar panel and an EcoFlow Wave 2 heat pump w/ battery to keep the cabin temperature at 'room temperature' summer & winter
Any idea what t temp Toyota kicks he fan on at? My fan only works correctly when I use this app. Fan does not come on at all without the app. Any thoughts as to why? 2007 Prius… thanks
So the only way to have the settings working is with the app connected to the car??? What happen when the app is not conected? Does tje car has it own settings to manage temperature?
I thought about this while driving through the rocky mountains watching the battery temp increase with regen. I'll see if I can capture some data and do a short video on the subject :)
Great stuff sir!!What about having a make shift ac duct that goes to your inlet for the cooling fan? How would that go for rocking cooler Temps on the battery?
Great video. I have a prius C. If the heat rises too high, can it permanently ruin the battery? Or would the system limit the use of the hybrid engin and thus forcing more use of the gas engine? Another question, I have noticed that when I shut off the car, the battery chart is at 70% but sometines when I go in the next day, the battery chart is down to 1 or 2 bars. Does the hybrid battery somehow lose it's charge over night? Can a hot night cause the battery to lose it's charge? When you say killer of battery in the video? Are you refering to short term efficiency? or Permanent? Thanks in advance.
I'm using a Venom quad charger and getting a No cap! Error message after each complete cycle. Any idea on what's wrong? I'm using the same settings you are
Thanks for making this video. Out of curiosity, where do you pick up all the info you learned about this app and hybrid batteries/priuses (the app seems to have relatively decent documentation, but it doesn't seem to go into much detail about applying everything on the screen to optimize for performance and reliability, which I'm more interested in)?
Most of what I make videos on is either my own research or observation from real world use. If there's anything in particular you would like covered in a future video let me know and I can touch on it. The app goes far more in detail than an average person would need or want but the stock prius hybrid system indicator is too simple so using the app in a more limited capacity has been a perfect balance for me.
60F/15.6C is wayyyy too cold to be comfortable That 70F/21.1C is probably doable. I usually drive at 25C-27C as I find it is too cold in the cabin but I understand what you're demonstrating about keeping the temp. cool for the car's regenbatt. Thank you for the explanation.
@@crimsonnightt sorry for the late reply. Thank you for answering. I tested 26C in the cabin yesterday on a 90 km (56 mile) long trip, and the battery was doing just fine :)
Thanks for review! So on my 2017 Prius Prime I just bought used a month ago with 30k miles, it's better use the charger it came with and slowly charge for 5 hours, instead of purchasing a fast charger from Toyota for $500 to charge in 2.5 hours, because you said batteries don't like fast charging at 2min40sed in your video? At 6min 35sec, you say your Charge Current Limit of -23.5kW is limited by braking, normally it is -25kW. Are you implying your regenerative braking is limited by the difference of 1.5kW, or at 13min40sec the difference of 4kW of 25kw CCL - 21kW DCL gives more regenerative braking power? Or did I misunderstand what you tried to teach us? Thanks so much!
I was referring to the regular (not plug-in) prius for my stats referenced. When the battery is within normal operating temps it will only allow regen braking to charge the battery at 25kW and discharge limit would max out at 21kW. The prime uses a Li-ion pack so chances are these numbers are much smaller than you would see in hybrid assistant.
My battery was showing 122 on the sensor farthest away from the fan. I had already cleaned the fan and there wasn't a whole lot of hair/dust. So this time I took the whole battery out and there was a lot of dog hair/dust stuck between the battery modules, especially the end where the 122 degrees was showing. Now that sensor is staying under 110. I'm in Arizona.
Very informative! Thank you. Does all this apply to the Prius plug-in with its lithium ion battery as well? I have a used 2012 with 115k, one previous owner, Toyota maintained and want to do everything to get it to 250k. I am In Austin and am worried about the heat.
Great advice! I gave 👍 & subscribed. I am concerned in engine coolant temp ALSO. does that app monitor also? If ppl see engine is overheating, dont have to wait until last minute to diagnose (water pimp, head gasket, etc). I'm an ole fart. Do u leave OBII plugged in, or does ur android automatically pick it up after u program?
I have a issue with the app it's not working for me, is it because I am using the Micro Mechanic OBD 2? Is that why it's not working? I use the Dr Prius app and it works perfectly. Can you tell me if it's that or not?
I mention how to connect your OBD II device to Hybrid Assistant here > ua-cam.com/video/q6bOv_Zue-Y/v-deo.html. I wish I focused a bit more on connecting the OBD II device than I did. You will want to press on the bottom middle of the screen once the app starts, then choose the name of the OBD II device.
I wonder how representative of the actual battery temperature that probe is reading. If the thermistor is sitting between the individual batteries, then it may be reading more of the cool air you are flushing through with the fan than the actual battery temperature.
The temperature probes are at the very bottom of each module and they are recessed a little bit while also making contact with the module. The air flows between modules to cool them down. The Temps as a result do not fluctuate very quickly on the readout which I've always interpreted to mean the data is accurate. If I was reading air temperature I would expect it to fluctuate quite a bit.
Many people place all 3 modules in the center for more accurate response. The 2010 thermistors are on the top of the battery. Be careful with the thermistor harness. Do not break off a thermistor! The wire is hard to solder. And Toyota does not sell a new harness!
The warranty has been 100k or 10yrs since at least my 2007 prius. The problem is that Toyota doesn't honor it. The warranty doesn't say how bad the battery must be before they would replace it. My 07 prius with 65k mi had no power and mpg reduced to around 30mpg, but the battery management could still charge it some so Toyota said no. I had to buy it myself to get back power and milage in the high 40s. Toyota doesn't participate in the BBB so you're screwed. No honor with toyota.
I had an inverter water pump go on me and my dashboard turned off. Toyota said it would have been covered, but no one told us in time. FYI, the Amazon $50 inverter water pump is terrible! Replaced multiple times, until I bought the Gates that costs $100's. Battery tip... Avoid A/C or going above 55 mph. When the pump was broken, my car still drove and didn't get excessive heat to shut it off by no AC and no speeding.
You are way out of warranty. It's 10 years or 100k, whichever comes first in California. Other states may be 8 years. You need to get Dr. Prius and test your battery. Another easy test is find a long hill and accelerate up it. If you get bucking and hesitation, at least one module has high Internal Resistance.
Your channel is so underated
Absolutely love your enthusiasm!
@@HEVTech1 I don’t lie. These are very good videos. And you speak clearly and loudly.
@@HEVTech1 what does it mean if my bars go down to 2 bars? Hybrid battery is about 3 years old. 2014 Prius 147, 000 miles. Runs good and I keep it maintained.
@@terrytorres7075 it just means you hybrid battery is low on charge. This can happen naturally in many different scenarios. It generally does not indicate a problem unless you are consistently seeing it drop to two bars and very quickly.
I found this channel 8 months ago and I bought my reader. Never got around it and I was desperately looking for this video. Thank god I found it.. honestly the best video for ALL PRIUS OWNERS! thank you.
Changed my prius for my dads… they never had a fan filter the person I purchased it from. The battery gets so hot that it only Prius on gas during stop lights in the summer!! Now this app will save me the trouble.
Fabulous! thanks much..
just beginning to delve more into my Gen 2 Prius ('06, 142K) that I've owned since
08....
Cheers!
As soon as I get my battery fan checked tomorrow, as it is working but there is no power coming in from the plug. I will download this awesome app. Thanks
I think this video is great, and I subscribed. I downloaded the hybrid assistant app as well. SWEET!
Thanks I have a 2015 Prius and live in Georgia so now I can keep my eye on the temp of the battery.Thanks hope to see more tips.
This is very helpful. Thanks much for the video. I was thinking of getting a corolla cross hybrid here in the Philippines and the temperature here goes up to 40C or 105F (most of the time)
would adding window vents help to keep temp down on hot summer days to reduce interior temp by dropping window down 3/8 of an inch say
Hello, thank you so much for this info. It was the first very hot summer day and I drove my Toyota hybrid (Nimh) with AC off. After a while I noticed the ic-engine wouldn't turn off and electric driving was not possible. After parking in the shade with AC blasting and cooling down the cabin, the car would drive again in EV mode. (Till it heated up again, because AC was off again). I was figuring already it had something to do with the battery temps and some sort of safety program kicking in to preserve the battery health. Did I damage the battery? Or did the system do its thing to play it safe? According to your paper up to the 2 minute mark in the video, what would you say what temps was the battery seeing? Was the system already imposing a discharge limit? (Fuel consumption was getting worse). After this experience I'll use the AC, but only because of the battery. No other reason.
what great info, you got a new sub, im looking at prius now
Currently designing a duct to take fresh AC over to the battery air inlet
Can you future 2010-2015 3d generation NiMeH Lexus RX 450h AWD hybrid vehicle? Highly appreciated
Hi, have you ever noticed that your Toyota hybrid _occasionally_ starts the engine when you activate cruise control? And in turns it off when you deactivate cruise control? I have a hybrid Camry. It occasionally does that. I then have to keep constant speed with the gas pedal.
perfect video. Is there some alternative to set battery fan without having OBD adapter in socket and mobile phone with running Battery assistant app?
Thank you so much. Once you change hybrid battery fan setting, does it save in car ECU or computer? Do you need phone app to apply setting each time?
In my rx 450h there is 3 cooling fans. How to find which one is faulty
I have a 2005 Prius. Diagnosis was done at the dealership it says my fan is off, then block 1,2,3 becomes weak Now my battery goes down to 2 pink bars, doesnt want to accelarate and the car doesn't want to turn off. At this point do i need to change HV battery pack? I have never change the battery since i got the car in 2010. I am having problems finding someone who can take care of my car.
Check online mobile after-market battery replacement, they will come to your address and rep,ace in 45 min, charging you, (2024 rates) between $2K-3K, while Toyota dealership will charge you at least two times more. Sure above cheaper price is for refurbished cells, while Toyota - for brand new hybrid battery
It seems NiMH batteries like 80 degrees F environment for 'storage'
I am considering a solar panel and an EcoFlow Wave 2 heat pump w/ battery to keep the cabin temperature at 'room temperature' summer & winter
Having ceramic tint also helps with keeping the HV battery cool.
Agreed!
What's that? Never heard of it
Any idea what t temp Toyota kicks he fan on at? My fan only works correctly when I use this app. Fan does not come on at all without the app. Any thoughts as to why? 2007 Prius… thanks
So the only way to have the settings working is with the app connected to the car??? What happen when the app is not conected? Does tje car has it own settings to manage temperature?
Great video sir love and respect from Pakistan 🇵🇰 plz make full review of this App
it would be good to know what are the default toyota values for fan start and stop
I thought about this while driving through the rocky mountains watching the battery temp increase with regen.
I'll see if I can capture some data and do a short video on the subject :)
is there an apple version
Great stuff sir!!What about having a make shift ac duct that goes to your inlet for the cooling fan? How would that go for rocking cooler Temps on the battery?
terrific video! Thanks
Do you need to keep the OBD2 connected for these adjustments to work?
How do you check the battery temp in a 2017 Camry Hybrid XLE? What App are u using?
a clear and concise explanation. Can you do a Prius V?
If someone would like me to feature their prius V I'd be happy to do a couple videos on it ;)
Great video. I have a prius C. If the heat rises too high, can it permanently ruin the battery? Or would the system limit the use of the hybrid engin and thus forcing more use of the gas engine?
Another question, I have noticed that when I shut off the car, the battery chart is at 70% but sometines when I go in the next day, the battery chart is down to 1 or 2 bars. Does the hybrid battery somehow lose it's charge over night? Can a hot night cause the battery to lose it's charge?
When you say killer of battery in the video? Are you refering to short term efficiency? or Permanent?
Thanks in advance.
On dr prius temp three shiws around 115 degree i drive car for uber what side is temp three and can it be bus connector inreplace tonreduce heat
My battery fan speed staying 1 and 2 does it have faulty fan or something else? Thanks for this informative video
Excellent video.
Agreed
I use dr prius it shows number 3 side higher temp which side isnit
On dr prius app mine temp 3 is higher aroind 114 other two are 100 why is temp 3 higher
this work with a gen 2?
My fan works as it should with the app running but not without the app running. Can you suggest where to look for the problem? Would appreciate it.
The app has to be running to control the fan speed.
Can you disable traction control with your odb?
Yes, with Dr. Prius
Is there a way to control the fan on Gen 5 RAV4?
I'm using a Venom quad charger and getting a No cap! Error message after each complete cycle. Any idea on what's wrong? I'm using the same settings you are
I live in Arizona its hot is it better to use your A/C to keep the car cool inside or is it ok to roll the windows down?
Keep AC running, opening the windows when outside is over 100 degrees will not do much
Will th setting permanently in the car after we plug the OBD2 scanner out
Thanks for making this video. Out of curiosity, where do you pick up all the info you learned about this app and hybrid batteries/priuses (the app seems to have relatively decent documentation, but it doesn't seem to go into much detail about applying everything on the screen to optimize for performance and reliability, which I'm more interested in)?
Most of what I make videos on is either my own research or observation from real world use.
If there's anything in particular you would like covered in a future video let me know and I can touch on it.
The app goes far more in detail than an average person would need or want but the stock prius hybrid system indicator is too simple so using the app in a more limited capacity has been a perfect balance for me.
Do you have to keep OBD plugged in all the time for these settings to stick?
I'd also like to know the answer to this
60F/15.6C is wayyyy too cold to be comfortable
That 70F/21.1C is probably doable.
I usually drive at 25C-27C as I find it is too cold in the cabin but I understand what you're demonstrating about keeping the temp. cool for the car's regenbatt.
Thank you for the explanation.
Hello, have you experienced overheating issues (battery) by driving around at 27C cabin temperature?
@@PFinkoloTL87 Hey. No issues with battery or anything (knocks on wood).
@@crimsonnightt sorry for the late reply. Thank you for answering. I tested 26C in the cabin yesterday on a 90 km (56 mile) long trip, and the battery was doing just fine :)
Thank you, you explain it very well, I'm going to subscribe
Any app for rav4?
If the fan is running all the time to control the temperature wouldn't that be less fuel-efficient overall for the car?
Thanks for review! So on my 2017 Prius Prime I just bought used a month ago with 30k miles, it's better use the charger it came with and slowly charge for 5 hours, instead of purchasing a fast charger from Toyota for $500 to charge in 2.5 hours, because you said batteries don't like fast charging at 2min40sed in your video? At 6min 35sec, you say your Charge Current Limit of -23.5kW is limited by braking, normally it is -25kW. Are you implying your regenerative braking is limited by the difference of 1.5kW, or at 13min40sec the difference of 4kW of 25kw CCL - 21kW DCL gives more regenerative braking power? Or did I misunderstand what you tried to teach us? Thanks so much!
I was referring to the regular (not plug-in) prius for my stats referenced.
When the battery is within normal operating temps it will only allow regen braking to charge the battery at 25kW and discharge limit would max out at 21kW. The prime uses a Li-ion pack so chances are these numbers are much smaller than you would see in hybrid assistant.
Dr prius shows temp three be aroind 115 which side is it and what causes high temp indrive this car for uber
My battery was showing 122 on the sensor farthest away from the fan. I had already cleaned the fan and there wasn't a whole lot of hair/dust. So this time I took the whole battery out and there was a lot of dog hair/dust stuck between the battery modules, especially the end where the 122 degrees was showing. Now that sensor is staying under 110. I'm in Arizona.
I have Prius 3rd gen with 250k miles but recently my hybrid battery is charging more frequently up 100% instead of 85. Is it something to worry about?
Very informative! Thank you.
Does all this apply to the Prius plug-in with its lithium ion battery as well? I have a used 2012 with 115k, one previous owner, Toyota maintained and want to do everything to get it to 250k. I am
In Austin and am worried about the heat.
is there an iPhone app that does the Hybrid Assistant functions
Its not a hybrid assistant replacement, but Dr. Prius is available on the Apple app store:
apps.apple.com/us/app/dr-prius-dr-hybrid/id1321750222
NiMH and NiCd hate heat. Meanwhile Li-Ion straight up goes in thermal runaway :D
Great advice! I gave 👍 & subscribed. I am concerned in engine coolant temp ALSO. does that app monitor also? If ppl see engine is overheating, dont have to wait until last minute to diagnose (water pimp, head gasket, etc). I'm an ole fart. Do u leave OBII plugged in, or does ur android automatically pick it up after u program?
That app isn't very useful for those of us with iPhones. Do you have a suggestion for an alternate?
I have a issue with the app it's not working for me, is it because I am using the Micro Mechanic OBD 2? Is that why it's not working? I use the Dr Prius app and it works perfectly. Can you tell me if it's that or not?
Will the cheaper OBD2 work on the App? @H-EV Tech
I mention how to connect your OBD II device to Hybrid Assistant here > ua-cam.com/video/q6bOv_Zue-Y/v-deo.html. I wish I focused a bit more on connecting the OBD II device than I did.
You will want to press on the bottom middle of the screen once the app starts, then choose the name of the OBD II device.
Doesn't work with ELM 327 OBD2. It connects but no readings.
Same with the Micro Mechanic OBD2
I wonder how representative of the actual battery temperature that probe is reading. If the thermistor is sitting between the individual batteries, then it may be reading more of the cool air you are flushing through with the fan than the actual battery temperature.
The temperature probes are at the very bottom of each module and they are recessed a little bit while also making contact with the module.
The air flows between modules to cool them down. The Temps as a result do not fluctuate very quickly on the readout which I've always interpreted to mean the data is accurate. If I was reading air temperature I would expect it to fluctuate quite a bit.
Many people place all 3 modules in the center for more accurate response. The 2010 thermistors are on the top of the battery. Be careful with the thermistor harness. Do not break off a thermistor! The wire is hard to solder. And Toyota does not sell a new harness!
Do you leave it plugged in 24/7? I just got one.
Yep! I leave an OBD reader plugged in at all times in both of my cars.
DONT USE A CHEAP OBD2 SCANNER!
It can possibly short circut your car. Use Blue driver or something of quality.
The warranty has been 100k or 10yrs since at least my 2007 prius. The problem is that Toyota doesn't honor it. The warranty doesn't say how bad the battery must be before they would replace it. My 07 prius with 65k mi had no power and mpg reduced to around 30mpg, but the battery management could still charge it some so Toyota said no. I had to buy it myself to get back power and milage in the high 40s. Toyota doesn't participate in the BBB so you're screwed. No honor with toyota.
I had an inverter water pump go on me and my dashboard turned off. Toyota said it would have been covered, but no one told us in time.
FYI, the Amazon $50 inverter water pump is terrible! Replaced multiple times, until I bought the Gates that costs $100's.
Battery tip... Avoid A/C or going above 55 mph. When the pump was broken, my car still drove and didn't get excessive heat to shut it off by no AC and no speeding.
You are way out of warranty. It's 10 years or 100k, whichever comes first in California. Other states may be 8 years. You need to get Dr. Prius and test your battery. Another easy test is find a long hill and accelerate up it. If you get bucking and hesitation, at least one module has high Internal Resistance.
@@amazoidal oh this was many years ago with 45k miles and 3 yrs. We never forget and stop sharing when we're screwed by a company like toyota.