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post #1 of 240 Old 12-05-2008, 01:55 PM Thread Starter
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Plugging off auxiliary battery?

Hey all,

New here

I have a 2009 camry hybrid. I am going overseas for three weeks and leaving my vehicle behind. The last time I have done this, I had to jump-start the car. I called a Toyota service department and the guy told me to plug off the auxiliary battery. Now, I am in no way a car expert. Actually, I don't know much about cars period. How do you go about doing this? Or is there anything else to make sure that my car starts when I get back?


Thanks in advance
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post #2 of 240 Old 12-05-2008, 04:22 PM
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Go into the trunk, open the battery compartment (located on the right side) and disconnect the negative terminal on the 12 volt battery. When you get back, open the trunk with your key, reconnect the battery and drive home.

Note! You will lose any pre-set radio stations.
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post #3 of 240 Old 12-05-2008, 11:07 PM
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Question

In this hi tech world of today why would we have to do that. We shouldn't have to. You do not have to do that with a normal Car, so why with the Hybrids????

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post #4 of 240 Old 12-06-2008, 08:25 AM
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mspeasl,

Toyota recommends that you do this if the car is to be parked for two months or more. Mine has been parked for 2 to 3 weeks at a time without any problems. As to why, the "smart key" system is still active and hunting for a key. Over time it will drain the small 12 volt auxiliary battery in the trunk.

Remember that the hybrid only uses the 12 volt to boot the computers and the traction battery along with MG1 starts the car. A lot of the Prius guys carry a "booster" type battery in their cars not only to help others but also themselves. The Prius battery is not much larger than a motorcycle battery.

I know of one guy whose "emergency boot" battery consists of (4) 3v SF123A Lithium flashlight batteries from our tactical Surefire lights. It's smaller than a small cell phone and if everything is turned off in the car, he claims it will boot the computer and let you start the Prius.
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post #5 of 240 Old 12-06-2008, 10:57 PM
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USA

GeorgiaHybrid,

This is my first entry into the Hybrid world. Thanks for the info.

Mspeasl
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Last edited by mspeasl; 12-06-2008 at 10:58 PM.
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post #6 of 240 Old 12-08-2008, 08:19 AM
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We just returned from a trip -- the TCH sat for 4 1/2 weeks. It was fine; it started immediately, everything worked. Methinks it would take a couple of months (at least) to drain the 12V battery.

By the way, I believe that if you leave the key fob in a location where it can "talk to" the remote locking system in the car, that would drain the battery a lot faster. If the fob isn't in range, the car just occasionally looks for it. But if the fob is in range, the car and the fob communicate more or less continually, which takes more power. (Could be wrong about this, but seem to recall reading it, perhaps even in the manual.)
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post #7 of 240 Old 12-10-2008, 05:18 PM Thread Starter
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Just an update,

I dropped off my car for maintenance and the guy there told me NOT to mess with the batteries as it can potentially damage or spoil the car's electrics. He says I am better off just jump starting the car. Also, he taught me to plug off the negative of the 15v and not the 12v. What is the difference?

I am actually leaving my car outside since I don't really have a garage. It can get pretty cold here. Is my car doomed not to start anyways? hehe.
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post #8 of 240 Old 12-11-2008, 06:57 PM
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Don't know what the 15V thing is all about...sounds like smoke to me.

Keep in mind that the 12V battery only powers the electronics. The ICE is started by the traction motor, which is way more powerful than any conventional starter. (What is it, around 40 hp or something like that?) If *that* won't start your engine, regardless of how cold it is, nothing will!

Of course, the other issue is whether your traction battery will stay charged for a few weeks. Ours certainly did. A few months might be an issue, but a few weeks should not be a problem at all.

Enjoy your trip!
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post #9 of 240 Old 04-19-2011, 08:18 AM
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2011 Hybrid Camry no power did not start

Greetings:

This is my first posting on this site. I live in Charlotte, NC
and we own a 2011 Hybrid Camry. We have owned the car
for about 6 months now.

On Friday April 15, 2011 we had our first oil change at 4400 miles.
Saturday we took the car for our first 5 + hour trip. We travelled
to Surf City, NC. Sunday afternoon we drove the car as usual. Monday
is where the problem was experienced:

At around 2 pm I approached the car with the key fob. The
security system did not detect our keyless entry. Then I opened
the door and noticed something peculiar. Nothing would work.

We attempted to start the car using the push button -nothing.
Pressed on the brake for a few secs and did push button button -nothing.
Initially it looked like we were having a battery issue.
Called my dealer in Rock Hill and they asked us to try holding the
keyless entry fob up to the button for a few secs. --nothing still.
We called our road assist service, and AAA tried to jump start the car.
That did not work either. We then had to have the car towed.

This morning Tuesday April 19th I got a call from the dealer
we had the car towed here in Wilmington, NC.
They have advised that the car is starting normally.
We have asked the technician to do a complete diagnostic check of the system.
I am worried that this is not going to get fixed and we are going to be riddled with
problems since the dang car is only 6 months old.


Just wondering if anyone else has experienced a similar problem with
their Camry.

Last edited by drewski28; 04-19-2011 at 08:21 AM.
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post #10 of 240 Old 04-19-2011, 11:48 AM
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That sounds like a key problem.

I am no "expert". BUT, we had the exact same thing happen to us about a month ago. We stopped for breakfast with everything normal. Went back out to leave and the car would not respond. I had to open the door with the metal key. When I got inside, I pushed the button nothing happened. I pulled out the owners manual and started reading. After about 5 minutes of holding the key up to the button (right next to it), the car recognized the key and started.

After driving home and switching to the second key, the problem has not re-surfaced. I'm 99% sure it was the battery in the fob. I have since replaced that battery and I am back to using the fob I was using before with no issues.

2008 TCH Magnetic Grey on Black
280,000 miles

1999 Tacoma Prerunner SR5 V6/auto White on Oak
235,000 miles
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post #11 of 240 Old 04-19-2011, 03:24 PM
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Hey snookwhaler:

I forgot to mention. I tried to start the car with 2 different
key fobs and neither of them activated the car.




I am hoping Toyota will be able to remedy this problem.
So far all the folks at the Wilmington, NC service department
have not been very helpful.

Until someone escalates this issue up to Toyota and until this issue
is fixed I am going to be leery about driving this car.
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post #12 of 240 Old 04-19-2011, 04:15 PM
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well, 2 things you do not do.

1. jump starting the car. 12V battery in the trunk has very little to do with engine starting.
2. not following proper starting sequence. pressing the power button without having brake pedal depressed, etc.

looks like your car simply had a momentary lapse of reason and quit recognizing your fobs. wild thought is - and it is in the manual - high level of outside radiations may cause this. i wouldn't be parking in that spot again. very likely there was some sort of emitter there that could have messed up your fobs recognition.



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post #13 of 240 Old 04-19-2011, 11:16 PM
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Quote:
Originally Posted by drewski28 View Post
Greetings:

At around 2 pm I approached the car with the key fob. The
security system did not detect our keyless entry. Then I opened
the door and noticed something peculiar. Nothing would work.

We attempted to start the car using the push button -nothing.
Pressed on the brake for a few secs and did push button button -nothing.
I own a 2007 TCH and have two places in town where I have keyless problems. One is a Denny's restaurant and the other is a Convenience store on the main drag in the north part of town. Both times this happened at night. I had lots of trouble getting either door to recognize either of our fobs. That one time at Denny's I had to hold my fob up to the button to get it to start the car.

A few days later we ate at Denny's again this time during the day. I looked around and saw a 150 foot tall cell tower about 200 foot from the back corner of the restaurant. One day driving by the convenience store is another tall cell tower in behind it.

Evidently it was the cell tower RF causing my fobs to barely work. Next time this happens look for a nearby cell tower. I have no other fob or starting issues as long as I'm over a block from those cell towers. I now park at Denny's as far away from the tower as I can get. We no longer stop at that particular convenience store.

Things to know - When you press the brake pedal pedal, a small green led should light in the start button. It's then you press the start button and hold it for a few seconds for the car to start. Another is when you shut off the car to get out, always look at the clock on the dash, it should be off or dark. This way you know for sure the ignition and power are turned off.

Let us know if you have any more starting problems.

Last edited by WhiteSands; 04-20-2011 at 05:07 AM.
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post #14 of 240 Old 04-22-2011, 04:23 PM
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This is probably my biggest concern/fear as I consider whether to buy a TCH for my wife. She doesn't like the idea of push-button start to begin with. In fact, she's a technophobe who'd rather have a car with roll-down windows. That aside, I worry about her getting stranded in exactly this kind of situation. Also, she's lost car keys in the past and I worry about her losing her TCH fob. I understand that they're expensive to replace? How many do they give you with the car? Two? Three?
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post #15 of 240 Old 04-22-2011, 07:14 PM
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Quote:
Originally Posted by Aptos Driver View Post
This is probably my biggest concern/fear as I consider whether to buy a TCH for my wife. She doesn't like the idea of push-button start to begin with. In fact, she's a technophobe who'd rather have a car with roll-down windows. That aside, I worry about her getting stranded in exactly this kind of situation. Also, she's lost car keys in the past and I worry about her losing her TCH fob. I understand that they're expensive to replace? How many do they give you with the car? Two? Three?
You get two.You can always negotiate getting a third remote when buying.
The push button feature is on the gas Camry and other brands too.

'11 Camry Hybrid Classic Silver/Ash
Moonroof | NAV | Leather | JBL Audio | XM | Blue Tooth | OEM Remote Start | Michelin Primacy MXV4
'11 Honda CR-V EX-L w/NAV 4WD Glacier Blue/Gray
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