User Name Password    
CleanMPG, Learn to raise fuel economy and lower emissions in whatever you drive.  
MENU
• What is hypermiling? •
CleanMPG to AAA:
• Hypermiling Rebuttal •
 
• Home
• CleanMPG Staff
• Articles
• Fuel Economy Forums
      • Register
Go Hypermiling!

   Car Reviews:

2013 Elantra GT

2013 Elantra Coupe

2013 Lexus ES 300h

2013 Mazda CX-5


2013 Lexus GS 450h

2012 Prius c

2013 Malibu Eco

2012 Hyundai Accent
   Bike and Gear Reviews:

HTC Thunderbolt

2010 R 1200 GS (A)

Kawasaki KLX250SF

Zero S


Aerostich Darien

Shoei Hornet DS

Honda CRF230L

Yamaha XT250


• More Reviews
• Gallery
• Mileage Logs
 
• CleanMPG Store
 
• Calendar
• Glossary
• Garage
• Files
 
• Research
• Related Sites
 
• Archives
• Arcade
 
• Monthly Fuel Efficient •
Vehicle Sales Figures


ScanGauge with X-Gauge: $159.95

Pre-programming, a CleanMPG laser cut decal, and shipping included!



Even better value for members only is available in the latest SG-II w/ X-Gauge Group Buy purchase thread.



While we strive to provide only the highest quality information through our members' offerings, if you find the information provided valuable, please consider a donation so that we can offer an even better experience for the membership and guests well into the future.

Thank you

-Wayne Gerdes
Owner/Admin
CleanMPG



Home Fuel Economy Forums Gallery Mileage Logs

Register FAQ Members List Search Today's Posts Mark Forums Read


Go Back   CleanMPG Forums » Hybrid Owners Community » Ford Escape Hybrid


Ford Escape Hybrid Everything and anything relating to the Ford Escape or Mercury mariner Hybrid.

Welcome to the CleanMPG forums.

Some posts may describe situations which may in some cases be unsafe or illegal in some jurisdictions. Please use common sense and consult your local laws to make sure you do not hurt yourself or others or break any laws.

You are currently viewing our boards as a guest which gives you limited access to view discussions, articles and access our other features. By joining our community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload your own photos and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact contact support.

12V Battery Replacement

Reply
 
Thread Tools Display Modes
  #1   Submit to Clesto Submit to Digg Submit to Reddit Submit to Furl Submit to Del.icio.us Submit to Spurl
Old 10-01-2007, 04:24 PM
GaryG GaryG is offline
Veteran
 
Join Date: Mar 2006
Vehicles: '05 FEH FWD and '09 FEH FWD
Location: Jupiter, Florida
Posts: 1,109
12V Battery Replacement

My Hybrid Tech stated that he had to use the built-in Jump-Start Procedure 3 times before my HV battery would start the ICE. He said it was getting near 3yrs old and the heat here in Florida takes a toll on it so I should consider replacing it.

Suggestions have been around that our standard car battery should be replaced with a deep cycle battery. After thinking about that for a while, I decided I would stay with a battery that met the specs of the original OEM. I have been noticing a drop in my battery SoC even while my generator was charging my HV battery. I thought the 12V battery was taking a big adjustment from the DC/DC converter to top it off when I seen those drops in the SoC. It seems that this is happening more often now. For all of the reasons above, I've been looking for a replacement. After all, if replacing a 12V battery may improve my mileage by holding a charge longer, it may be worth it.

At first, I thought just go to Sears and get one of their best Diehard batteries. Sunday I was in Costco and thought I'd take a look at the replacement they recommend from their line. Costco listed a 96R, 500 CCA for a replacement, but they had none in stock. Today, I called Sears and they said they only had a Diehard Gold that would fit. When I ask for the specs, they gave me a 40R, 590 CCA. I told them that Costco's book said I needed a 96R, 500 CCA, but he said Ford recommended their 40R battery as a replacement.

At this point, I did some research to find out what the difference was, and looked at the battery in my FEH for the specs and measurements. I found that the 40R and the 96R had to do with the measurements and CCA ratings. The stock Motorcraft battery was a BXT - 96R, 500 CCA. I've always thought the stock Motorcraft batteries were junk and I would never replace one with another.

After digging into warranty and size, I found the Sears battery would not fit, and I had the same problem in a Ford Focus I own a while back. I was not about to cram a big battery in the holder again. The generic 96R was very close to the stock replacement size, but I would still not have a perfect fit in my stock battery holder as the stock Motorcraft battery.

Both the Costco and the Sears batteries had a 3yrs replacement and 100 month prorated warranty. The Sears wouldn't fit and the Costco 96R was not in stock, so I did some research on Motorcraft batteries.

The higher end Motorcraft battery offered the same warranty as the Sears and Costco battery. At this point, I called the dealership and ask if they carried the higher end "MAX" Motorcraft battery. They told me no, but they had the stock BXT - 96R that was the stock battery for the '05 FEH for $85 which was $2 less than the Sears that didn't fit. Then, I found out that the BXT - 96R Motorcraft battery had the same warranty as the Sears and Costco battery, which was 3yrs full replacement, 100 month prorated coverages.

I had no idea I have 6 months of full replacement value on my stock battery. Any recommendations or ideas of what I should do?

GaryG
Reply With Quote
Sponsored Links
  #2   Submit to Clesto Submit to Digg Submit to Reddit Submit to Furl Submit to Del.icio.us Submit to Spurl
Old 10-02-2007, 09:54 AM
MyPart MyPart is offline
Senior Member
 
Join Date: Jun 2007
Vehicles: 08 FEH FWD
Location: Southeast Coastline
Posts: 137
Re: 12V Battery Replacement

I would talk to the Hybrid Tech again and see if he has any pull with the dealer (or Motorcraft) to get a warranty replacement. He should work with you since it was his recommendation in the first place and he's seen the issue first hand.

It's my understanding that the jump-start function on the FEH uses power from the HV to quick-charge the non-HV battery. If the non-HV battery can't take a quick charge then it's probably on it's way out.

You can also go by any local auto parts store and have them check the standard battery with a load tester. They are usually quick to point out an under-performing battery. Take this recommendation with you when you try to get the Motorcraft warranty replacement.

Heat will kill batteries: I recently moved from MA to SC and the heat killed the battery in two separate cars. One was a <2 year old Gold series battery. The other was <1.5 years. Both replaced for free under warranty. (thanks to Autozone and my retention of receipts)

What factory warranties came with your '05 FEH? I thought that there was a 3yr/36,000 Bumper to Bumper that covered just about anything and then the 8yr hybrid warranty for drivetrain/emissions.

Did the '05 have the 5yr/50,000 roadside assistance program? If so, wouldn't your tow for the previously mentioned relay issue have been covered by it?
Reply With Quote
  #3   Submit to Clesto Submit to Digg Submit to Reddit Submit to Furl Submit to Del.icio.us Submit to Spurl
Old 10-02-2007, 04:22 PM
GaryG GaryG is offline
Veteran
 
Join Date: Mar 2006
Vehicles: '05 FEH FWD and '09 FEH FWD
Location: Jupiter, Florida
Posts: 1,109
Re: 12V Battery Replacement

Quote:
Originally Posted by MyPart View Post
I would talk to the Hybrid Tech again and see if he has any pull with the dealer (or Motorcraft) to get a warranty replacement. He should work with you since it was his recommendation in the first place and he's seen the issue first hand.

It's my understanding that the jump-start function on the FEH uses power from the HV to quick-charge the non-HV battery. If the non-HV battery can't take a quick charge then it's probably on it's way out.

You can also go by any local auto parts store and have them check the standard battery with a load tester. They are usually quick to point out an under-performing battery. Take this recommendation with you when you try to get the Motorcraft warranty replacement.

Heat will kill batteries: I recently moved from MA to SC and the heat killed the battery in two separate cars. One was a <2 year old Gold series battery. The other was <1.5 years. Both replaced for free under warranty. (thanks to Autozone and my retention of receipts)

What factory warranties came with your '05 FEH? I thought that there was a 3yr/36,000 Bumper to Bumper that covered just about anything and then the 8yr hybrid warranty for drivetrain/emissions.

Did the '05 have the 5yr/50,000 roadside assistance program? If so, wouldn't your tow for the previously mentioned relay issue have been covered by it?
Good points about going back to the dealership and also getting a load test for documentation. Carl also suggested monitoring the voltage with the SG also and I'm going to do that as well.

The 12V battery does not spin the engine for start-up, but it's needed to supply 12V systems power to start the engine such as spark, fuel pressure and modules. The 12V battery boost the HV battery with the jump start procedure, not the other way around as you stated.

I only have the 3yr/36,000 mile warranty and the roadside assistance is only covered during that time. However, if the problem was my HV battery or eCVT which is still covered, my SA said the tow would be covered also.

Thanks,

GaryG
Reply With Quote
  #4   Submit to Clesto Submit to Digg Submit to Reddit Submit to Furl Submit to Del.icio.us Submit to Spurl
Old 10-02-2007, 08:11 PM
hobbit hobbit is offline
Veteran
 
Join Date: May 2006
Vehicles: 04 prius
Location: Bahstahn
Posts: 2,691
Re: 12V Battery Replacement

I would closely question then as to what the hybrid battery
SOC was before they went to jump it. There should seldom be
*any* need to do that under normal operation...
.
_H*
Reply With Quote
  #5   Submit to Clesto Submit to Digg Submit to Reddit Submit to Furl Submit to Del.icio.us Submit to Spurl
Old 10-16-2007, 05:37 PM
GaryG GaryG is offline
Veteran
 
Join Date: Mar 2006
Vehicles: '05 FEH FWD and '09 FEH FWD
Location: Jupiter, Florida
Posts: 1,109
Re: 12V Battery Replacement

Quote:
Originally Posted by hobbit View Post
I would closely question then as to what the hybrid battery
SOC was before they went to jump it. There should seldom be
*any* need to do that under normal operation...
.
_H*
The problem keeps coming back and I'm left with a no start if I let the FEH sit for two days. Last week it would not start again so I when to the dealership in my other car and talked to the Hybrid Tech again. He told me a little more about finding both batteries low. I had tried the jump start procedure several times with no luck and he again said Ford was telling him it had to be a problem with the low voltage system.

I went a head and bought a new OEM 12V battery hoping to save a tow fee ($131) and installed the new battery in my driveway. It still would not start so I did a few more Jump start procedures again. At this point, with the old battery and a portable jump start box and a new battery I had done about 7 jump start procedures. No luck so I called for a tow for the next morning to the dealership. I left the keys on the console for the tow guy when I took my wife to work. The tow guy got to my house and it started for him. He drove it up on the ramp and took it to the dealership. It started again when he got there.

The Tech told me he had to reset a bunch of codes having to do with low voltage to all the modules, but everything was checking out good. He said he contacted Ford again and they told him again it was a low voltage problem that must have reset itself over night.

Well, yesterday I had the same problem, so I've used the Jump Start procedure and recharged my new battery with no luck. I've disconnected the 12V battery and put it on the charger for the night and will try again tomorrow.

Any ideas folks? Back to the dealer again I guess.

GaryG
Reply With Quote
  #6   Submit to Clesto Submit to Digg Submit to Reddit Submit to Furl Submit to Del.icio.us Submit to Spurl
Old 10-16-2007, 08:27 PM
brick's Avatar
brick brick is offline
Answers to "that guy."
 
Join Date: Mar 2006
Vehicles: 2009 Volvo V70
Location: NY
Posts: 4,908
Re: 12V Battery Replacement

I'd be interested to know how much current the car is drawing on stand-by. It sounds to me like you've got some kind of parasitic load or else there's an intermittent fault between the battery and the 12V system. If you can check current draw, maybe start with that. The next thing I would do is spend some time with my head in the engine bay looking for bad connections, especially bad chassis grounds. That kind of thing isn't exactly expected on something as recent as '05 but not unheard of either.

Even simpler than messing with an ammeter, have you just put a volt meter to the battery terminals to see if it's really down? Especially the new battery? That'll tell you if it's being drained (or not charged.)
__________________
Tim
Reply With Quote
  #7   Submit to Clesto Submit to Digg Submit to Reddit Submit to Furl Submit to Del.icio.us Submit to Spurl
Old 10-16-2007, 10:30 PM
CarlD CarlD is offline
Senior Member
 
Join Date: Aug 2007
Vehicles: 2005 Ford Escape Hybrid
Location: Phoenix, AZ
Posts: 485
Re: 12V Battery Replacement

If it's not starting with a charger attached to the 12V battery, then it must be either SoC too low or the HV contactors not closing. Do you have the xgauge firmware yet? If so there are many,many things to look at with regards to the battery.

I would guess something more than a power sustain relay was bad last time...
Reply With Quote
Reply




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

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

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
A new month, a new article on Battery Technology Dogarm General 1 07-12-2007 10:57 AM
12V battery maintainer with no IMA Mike Dabrowski 2000 Technical 6 05-17-2007 12:18 PM
Battery tech starts catching up to high tech. xcel In the News 2 03-15-2007 09:06 PM
Idea-Warming The HV Battery GaryG Ford Escape Hybrid 13 11-10-2006 06:48 PM
FEH HV Battery Conditioning GaryG Ford Escape Hybrid 0 09-22-2006 07:17 PM



All times are GMT -5. The time now is 07:35 AM.

Powered by vBulletin® Version 3.6.7
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright ©2006 - 2013, Clean MPG LLC. All Rights Reserved.