Dead battery Prius III - Toyota Prius Forum : Prius Online Toyota Forums
User Tag List

 
LinkBack Thread Tools
post #1 of 10 (permalink) Old 04-27-2014, 11:57 AM Thread Starter
DVB
Junior Member
 
Join Date: Apr 2014
Posts: 4
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Thread Starter)
Default Dead battery Prius III

I have a 3 years old Prius III on which, already for the second time, I had a flat 12v battery after returning from a 2 weeks holiday and collecting my car at the airport parking.

Contacting Toyota Customer Services department, I was told, in future when leaving the car unused for more than 1 week to disconnect this 12v battery or to connect with a battery charger!!! (As of each Prius user is also an engineer and all parking place at the airport is equipped with an electrical wall plug)

I get the impression that Toyota is not treating this flat battery on the Prius III seriously enough moreover when checking internet I noticed that i'm surely not the only one facing this problem.

So far I found on internet some information advising to remove, when leaving the car unused, the "dome fuse" which controlled the Radio,Interior lights and the Alarm system.

Is there anyone facing the same problem with the Toyota Prius III and who can advice me what to do to avoid the same problem again?

Thank you for your advice
DVB is offline  
Sponsored Links
Advertisement
 
post #2 of 10 (permalink) Old 04-27-2014, 03:36 PM
Senior Member
 
firepa63's Avatar
 
Join Date: Jun 2004
Posts: 2,243
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Default

I left my '09 for a month and it started right up. Do you have any aftermarket alarm system installed? If you do, that will definitely drain the 12v.
firepa63 is offline  
post #3 of 10 (permalink) Old 04-27-2014, 04:07 PM Thread Starter
DVB
Junior Member
 
Join Date: Apr 2014
Posts: 4
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Thread Starter)
Default

No, the installed alarm system is a OEM Toyota equipent
DVB is offline  
 
post #4 of 10 (permalink) Old 04-27-2014, 09:33 PM
Senior Member
 
firepa63's Avatar
 
Join Date: Jun 2004
Posts: 2,243
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Default

You have some other drain on the 12v system. The 12v battery is not very robust, so if it has been drained before, it doesn't take much to drain it again. If the battery has been totally drained, I suggest that you replace it with a new one.

You state that there is an alarm installed and that it is OEM equipment. Did it come standard on the car or was it a Toyota system that was dealer installed?
firepa63 is offline  
post #5 of 10 (permalink) Old 04-28-2014, 04:19 PM Thread Starter
DVB
Junior Member
 
Join Date: Apr 2014
Posts: 4
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Thread Starter)
Default

it came standard on the car
DVB is offline  
post #6 of 10 (permalink) Old 04-28-2014, 07:30 PM
Senior Member
 
firepa63's Avatar
 
Join Date: Jun 2004
Posts: 2,243
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Default

Is what you call an "alarm" just the engine immobilizer, or does it sound an audible/visual alarm if someone tries to break into the car?

The reason I ask is that people have alarms installed on cars that put a constant drain on the 12v system.

A remote start system also drains the 12v system.

Last edited by firepa63; 04-28-2014 at 07:34 PM.
firepa63 is offline  
post #7 of 10 (permalink) Old 04-29-2014, 11:06 AM Thread Starter
DVB
Junior Member
 
Join Date: Apr 2014
Posts: 4
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
(Thread Starter)
Default

The alarm system on my car will sound an audible/visual alarm if someone tries to break into the car.
DVB is offline  
post #8 of 10 (permalink) Old 04-29-2014, 04:35 PM
Senior Member
 
firepa63's Avatar
 
Join Date: Jun 2004
Posts: 2,243
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Default

Do you have the Toyota RS3200+ Vehicle Security System? If so, it was added by the dealer or at the POE. It didn't come from the factory that way. That system will run down the 12v battery and isn't needed on a Prius.
firepa63 is offline  
post #9 of 10 (permalink) Old 05-01-2014, 10:55 PM
Member
 
Join Date: Apr 2005
Location: Western WA
Posts: 97
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Default

It seems you may need a new 12V battery. Once they are run down they don't last long. You should also check to see if you can disable the SKS system (touch door handle to unlock, etc). In the older Prius cars (2004-2009) there was a button you could press to turn it off. Helps when you are parked a long time. On my newer Prius you may be able to turn it off from one of the menus.

This is in additional to any added alarm system drain as in firepa63's reply.
fdret44 is offline  
post #10 of 10 (permalink) Old 05-02-2014, 10:20 AM
Senior Member
 
firepa63's Avatar
 
Join Date: Jun 2004
Posts: 2,243
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Default

On the Gen III Prius, the SKS is supposed to disable itself after a period of inactivity to save the battery. I don't know how long that period is. Perhaps it is described in the Owner's Manual.
firepa63 is offline  
Reply

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



  Similar Threads
Thread Thread Starter Forum Replies Last Post
Dead Prius Battery and I KNOW WHY!!! BitShifter01 Prius Battery And Charging 24 01-09-2017 01:28 PM
Can't jump-start Prius with dead battery otodoran Prius Battery And Charging 10 11-14-2014 11:09 AM
Checking the 12v battery status on a 2010 model III djm Toyota Prius - Technical Chat 0 03-24-2010 11:22 PM
Dead battery on a new Prius tscales Toyota Prius Technical - Q & A 19 05-27-2007 12:58 AM
My Prius Battery Dead Franky Ho Toyota Prius - Technical Chat 3 04-08-2003 12:32 AM

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome