Re: How do you know if your (12V) battery is on its last legs?
 

Great, thanks!

Re: How do you know if your (12V) battery is on its last legs?
 

hey, haroldo, check this out:
http://www.batterymart.com/p-Mega-Cr...M-Battery.html

it is cheaper and has better specs than yellowtop Optima.

Re: How do you know if your (12V) battery is on its last legs?
 

or this:

exide Orbital Orb34m-36 Sealed Maintenance-Free AGM Marine RV Battery

$139 online
The Exide Select Orbital marine batteries are a complete line of hi-tech sealed batteries, designed to meet the needs of the serious marine or RV battery user. These advanced-design batteries use ultra-thin high purity lead plates. This design allows us to give you some of the lowest internal resistance batteries available. Absorbant glass mat technology gives you a completely sealed battery that cannot leak in your RV or boat. The Exide Select Orbital marine battery can be mounted anywhere, in any position in your RV or boat - they do not leak or spill like normal batteries.

Re: How do you know if your (12V) battery is on its last legs?
 

Used Urkoz's method to access that part of the Navigation with various display functions. But no info on the 12 volt battery. Had the car at the dealer and the service rep said they do a 12 volt battery check every time it's in for service. It's a test with load and printout. Battery checks out good. No charge.
Urkoz. My thanks for your help.

Re: How do you know if your (12V) battery is on its last legs?
 

no problem. you simply didn't get to the right screen. that sh-t is quite convoluted.
also, keep in mind, you can much so adjust microphone sensitivity form diagnostic mode.
dealer bs-s you. have my word, they don't load test battery every time.

Re: How do you know if your (12V) battery is on its last legs?
 

go here:
http://i49.tinypic.com/2iqjy3b.jpg
and hit vehicle sensor check
as you can see, mine is not doing too good.
http://i50.tinypic.com/2ibn9q9.jpg

Re: How do you know if your (12V) battery is on its last legs?
 

charging as I type. will prolly replace it in week or 2.

Re: How do you know if your (12V) battery is on its last legs?
 

What is the minimum V on the AGM battery (per the nav screen) before it may be best to change it (without waiting for it to not start first!)?

-- Alan

Re: How do you know if your (12V) battery is on its last legs?
 

Using the scan gauge set to read the 12 volt battery. My '07 TCH read 11.5 volts after letting it sit at home the day before.

The new XLE hybrid reads 12.5 volts after sitting at home all day the day before. The 12 volt battery powers the ECU even when it's in the sleep mode. Some techs call the 12 volt battery the instrument panel battery. It may power the headlights, instrument instruments including the lights, radio, heater, AC and heater fan. The AC compressor does get it's power from the traction battery.

You can also use a voltmeter set to the 15 or 20 volt DC setting. Read the voltage across the terminals of the 12 volt battery (with the engine off) red probe to the + terminal. Best to take the reading after the car has sit all day or all day the day before. The ECU in the sleep mode puts a very slight drain on the battery and will help you get a more accurate reading.

Re: How do you know if your (12V) battery is on its last legs?
 

I read somewhere, where I learned about disgnostic mode, that if battery reads below 12, it's a goner and needs to be replaced. so it will be.