Hybrid 12v battery jumping - Page 16 - Toyota Nation Forum : Toyota Car and Truck Forums
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post #226 of 240 Old 12-10-2014, 02:19 AM
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Quote:
Originally Posted by lincolnshibuya View Post
I'm looking for straight and simple answers, like the below;

https://ca.answers.yahoo.com/questio...4154014AAamRbb
A question was asked, I provided an answer. I have previously found out from the source what can be done.

I have more important things to do than provide an academic answer with sources. If I did that every time I provided an answer to technical questions I would be here and on other forums forever.

If you want to take answers from 'yahoo answers' then good luck to you. Personally I will use what I have learnt through engineering and from the technical information obtained from the manufacturer. I would strongly discourage the method advised in that link for a few reasons (it is rarely a good idea to leave jumper cables connected for longer than absolutely required).

If the method is to charge the dead battery - then buy a battery charger - do not use jumper cables to do it. There are risks to the electrical system in having batteries in parallel with significantly different voltages for too long, heat issues and voltage fluctuations. For a short period to simply start the car, this is not an issue.

There are even more complications if the other vehicle uses an AGM (absorbed glass mat) battery like the camry does. They do not charge well from a low level of charge with a large influx of current and you may damage the battery - many motorcycle batteries have been destroyed through this.

Quite simply - if toyota thought it was an issue in this day and age - it would be highlighted in the manual specific to this car. A camry hyrbid is not a prius - thus it is not appropriate to take stuff out of the prius manual and apply it to the camry.

TL;DR - If you want evidence go and look for it yourself. I have done the research before and obtained an answer - I don't intend repeating the process.I am comfortable with the answer I have given and have personally jump started cars from my hybrid.

If you don't like my answer, then so be it. This has been discussed in detail previously.

Last edited by adprom; 12-10-2014 at 02:30 AM.
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post #227 of 240 Old 12-13-2014, 01:44 AM
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After reading this thread, I thought I would share my experiences so far. I bought my TCH new in 2007, it is my main car and has provided me with trouble free transportation for 110,000 miles. Initially, I heeded the "do not jump start" advice. I did not want to take any chances with my new Baby.

I have owned up to 7 cars at one time, parked in as many as 3 different locations at once. I like to tinker with old cars, improve, then sell and move on to the next one. It's a pretty safe bet I do a lot more jumpstarting than most.

I have noticed that jumping from a conventional car is generally quicker, I have also discovered that jumping from the Camry works ok, but can take longer. To start my old Mercedes Diesels (not completely dead) I just have to wait for the Camry to charge up the Mercedes battery, which is 900 CCA, iirc. Between the glow plugs and the 23/1 compression ratio it takes a lot of juice to fire her up on a cold day. Through trial and error, i found out it takes time. I dont even try to fire up my old Mercedes Diesels till they've charged 20 min or more.

I have not noticed any ill effects from this. I'm still on the original 12V Panasonic.
Just recently I made the mistake of hooking up to the wrong terminals when attempting to retrieve an old Lexus from storage. BOY DID I FEEL STUPID! When I discovered I had blown out fuses/ fusible link in the Lexus, I went into a panic. I thought I'd probably damaged the Camry Hybrid as well.

It's been several days and a couple hundred miles so far, with no apparent damage to my Camry.
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post #228 of 240 Old 09-16-2015, 05:13 PM
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My 2015 new Camry Hybrid has stranded me away from home 3 times in 20 days. I started it successfully 27 times (brilliant) and then apparently got brain dead for theother three tries as Toyota service said there is nothing wrong with my car. Of course it is "driver error." So why then does the whole dash light up and a print out says "check charging system?" I had to be jumped by Toyota to take the car back to the dealer on day 20 and ate $4000 on depreciation for a car that won't run!!!If their computer diagnostics can't find anything, why does that always mean "DRIVER ERROR?" Then the dumb service guy says, well you blew out the 12 volt sitting there for 2 1/2 hours. If the twelve volt doesn't start the car, how is that relevant? I thought the electric hybrid motor started the car.
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post #229 of 240 Old 09-16-2015, 06:29 PM
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It's possible you have a defective battery. Ours failed in 16 months.

2012 TCH XLE-77,000 miles
2015 Volvo V60
2005 Odyssey
1970 Camaro-original owner
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post #230 of 240 Old 09-16-2015, 07:55 PM
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well, they'll never admit it. Thanx.MD
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post #231 of 240 Old 09-18-2015, 12:08 AM
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Quote:
Originally Posted by mdeanrn View Post
Then the dumb service guy says, well you blew out the 12 volt sitting there for 2 1/2 hours. If the twelve volt doesn't start the car, how is that relevant? I thought the electric hybrid motor started the car.
If you are sitting with just the accessories turned on, I assume you could drain the 12 volt battery enough. However, it is a deep cycle battery, so you wouldn't damage the battery like you would on a regular car. If the car started after a 12 volt jump, then the problem was you had a dead 12 volt battery.
That either means you somehow managed to drain it, or you have a bad battery.


If you are sitting in the car waiting for someone, just leave the car running. As long as the Hybrid battery has a charge the ICE will be off, not using any gas, and the 12 volt battery will charge off the Hybrid battery. If the Hybrid battery gets low, then the ICE will start and charge the Hybrid battery.
You can sit for hours, without worrying about the battery draining, as long as you have gas in the tank, and the ICE won't be running most the time.

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post #232 of 240 Old 09-18-2015, 09:28 AM
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I was sitting in the car but it was dead except for dash lights and fan. I just gassed up and went into the min mart with car locked. When I tried to restart, no go. This was the third time, same scenario. I can get somewhere but then I can't get home. I drained the 12 volt this time by sitting in car and trying to start it maybe 25 times in that 2 1/2 hrs., fan on as AZ is HOT. So, yes, I drained the 12 volt while sitting there for 2 1/2 hrs AFTER the car didn't start. Thoughts? MD
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post #233 of 240 Old 09-18-2015, 04:43 PM
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find another dealer, the tech there is a moron. you have a "check charging system" error on the dashboard, how complicated can that be?
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post #234 of 240 Old 09-18-2015, 11:21 PM
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Quote:
Originally Posted by mdeanrn View Post
I was sitting in the car but it was dead except for dash lights and fan. I just gassed up and went into the min mart with car locked. When I tried to restart, no go. This was the third time, same scenario. I can get somewhere but then I can't get home. I drained the 12 volt this time by sitting in car and trying to start it maybe 25 times in that 2 1/2 hrs., fan on as AZ is HOT. So, yes, I drained the 12 volt while sitting there for 2 1/2 hrs AFTER the car didn't start. Thoughts? MD

Did you try the radio? If the dash lights and the fan came on, and the radio also worked, then the 12 volt battery was likely ok. If you sat in the car for 2 1/2 hours and the dash lights still came on, then again, the 12 volt battery was likely ok.


The car doesn't use the 12 volt to start, it used the Hybrid battery. If all the normal stuff comes on ok, (radio, fan, dash light, etc.) then the 12 volt system is supplying power. If you pressed the button and the car doesn't attempt to start then either there is a problem with the hybrid battery, or maybe there is a problem with the switch on the shifter. It has to be in the parked position for the car to start. If it's not, then only the accessories (lights, fan, radio) come on when your press the start button. Maybe the shifter switch is bad or out of adjustment, so it isn't allowing the car to start. If it happens again, try moving the shifter to drive and back to park a few times.

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post #235 of 240 Old 09-20-2015, 09:21 AM
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Quote:
Originally Posted by Randyincolo View Post
Almost 6 years on a starting battery? I would change it even if it appeared to be working perfectly simply because of how old it is.
On a TCH, the 12 volt circuit runs accessories and the ECU. Aside from running the ECU, it's not involved in starting the ICE at all. The load pattern for the 12 volt is substantially different from an ICE-only Camry.

If you go with non-Panasoic (OEM) battery, get an 'glass mat (e.g. Optima) type that tolerates deep cycling. A 'conventional' starting battery won't 'live long and prosper'.
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post #236 of 240 Old 09-20-2015, 11:39 AM
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Just curious: Under what conditions will the 12V TCH battery experience deep cycling in normal use?

Rob - 2012 Camry Hybrid XLE
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post #237 of 240 Old 03-09-2017, 06:44 PM
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2012 Camry Hybrid 12V battery story

Hi boys and girls. This is a story about my local stealer , oops I mean dealership and their service dept/parts dept. My 2012 Hybrid sat in the garage unstarted for about 3 months (my bad). When I tried to start it up, i got zip,zero,nada. I jump started it and drove it around for about 45 minutes at highway speeds. I took it to a local auto parts store for a battery load check and it failed. So The wife says replace it with an OEM, get that GREAT Toyota warranty. I said I could get a cheaper Exide but she said no, her car. So I call and prepay/preorder the 12v battery, they won't order it otherwise.( insert sarcasm).I go in and wait 3 HOURS to get the battery changed (all the blind chimpanzees must have been out sick) by a lotboy. I pay $269, special price, today only for best customer, + $ install fee. Service writer says "normally" we don't charge for battery install but yours is in the trunk. It requires our highest trained chimpanzee to do the work. I leave and get home and decide to check out my new battery and guess what my OEM battery is a Panasonic S55D23R. a 24 month warranty battery. The original battery was an S65D23R, a higher CCA/Ah battery but since these cars don't need all that extra we (Panasonic/Toyota) will charge the same money for a smaller battery. And they wonder why people quit going to the dealer. If the picture gets attached, you'll notice the vent tube on the right and no temp sensor, don't know what he did with that.
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post #238 of 240 Old 03-09-2017, 09:57 PM
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I understand the sarcasm but be polite. Please. Let's leave calling people apes to less civilized parts of the world.
Go back to dealer and tell them to have thermistor installed. It's no rocket science, it simply glues itself to the battery plastic top. It's STICKY.
The OEM Panasonic - great battery, by the way - may be discontinued by now but indeed, you need very little to none CC but A LOT of storage capacity. I would not be worried.



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post #239 of 240 Old 10-28-2017, 08:56 AM
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Hybrid 12v battery jumping

https://www.toyotanation.com/forum/10...v-battery.html

Please be fully aware that 12V is NOT engine starting battery. It only restores power to computers and some electronics.


Here's example of what can happen - unfortunately - when 12V is not handled with caution.

Major issue with 2008 Highlander hybrid limited help? Anyone? Please?
Hello, I love forums like these especially with people who take time out of their day to help other with lack of knowledge. I own a 2008 Toyota Highlander hybrid limited. And I'm having starting issue. It's my wives car so I only drive it on the weekends. But yesterday while I was at work my wife informed me it wouldn't start and that my younger daughter had turned on inside rear dome light so my wife stepped out of car and I called my dad to take a look at it. He hooked up the 12v batter which is located towards passenger side under hood and hooked up jumped cables he informed me when he did the horn honked continually...like a long honk, he ended up disconnecting battery and charging it....I got home late and took it off charger. The next day I hooked it up went to start it and got the following messages on dash....these are in order....a brake in red letters followed by brake malfunction stop vehicle In safe place and immediately contact dealer. Then check hybrid system followed by same stop vehicle contact dealership, then abs check abs by dealer. Then check break system have vehicle checked by dealer, then check srs airbag system have vehicle checked by dealer. Then check tire pressure system, have vehicle checked by dealer, and the push to start is orange red not green.
The power seats do not work, the radio does not power on or work, the automatic trunk won't open, the temperature or heat does not work, but the dash has power and indicator lights. I checked all fuses, they are fine, bought a new 12v battery same issues...I don't understand what could be going on?




Last edited by ukrkoz; 10-30-2017 at 10:06 PM. Reason: Title clarification to avoid confusion
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post #240 of 240 Old 10-29-2017, 10:56 AM
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Hi all.
12V jumping is extensively discussed in previous threads.
Procedure is same across any Toyota hybrid.
It is same across any model and year.
There is nothing to add or subtract to and from it.
Improper 12V battery handling may result in rather expensive repairs. There is lately Highlander Hybrid owner who messed with 12V and ended just there.

With that in mind, your opinions and desire to contribute is appreciated but - safety first. Should you be sure you have some new constructive development in this process - PM me and I'll gladly ad it to the topic.
Otherwise, topic is closed as exhausted.



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