jdanielca

Anyone know an app for accurate battery voltage ?
whats the optimum battery voltage car off?

and under what voltage are we going to have issues? I need info specific to this car because we all know it’s finicky with the battery voltage

miket000

It depends on outside air temperature and how long the car sits without running. Normal parasitic draw will pull the battery voltage down a significant amount overnight. I used a fairly accurate oscilloscope to take these voltage readings. My battery and alternator were in good shape and working correctly ignore my speculation in these links. Years later the same battery and alternator are in the car. They work fine. The voltages I took were good normal voltages. Using a load meter or checking your battery with a hydrometer will tell you more accurate info about your battery health but I'm sure your aware of those.

I've measured between
12.46v and 12.6 after sitting overnight.

post #9
https://www.clublexus.com/forums/ls-...l#post10699359

post #7 has a graph of battery draw down voltage during start.

jdanielca

how much was your parasitic draw ?

miket000

Unfortunately I didn't measure the parasitic draw.

Cme

I found what the problem was, it was the passenger feet light that was on, I hadn't noticed it before because it was during the day when I checked. Now, I don't know what is causing this issue, because I checked all the lock sensors and they seem to be fine. So, how do I take the bulb from the feet light, since my smallest Philip can't seem to unscrew the black screw off the bottom interior?

Thank you in advance.

swfla

iTrader: (1)

There is a known issue with the door plunger switches shorting out/failing. Several posters have put new ones in and solved the issue. If there is an issue with door plunger, removing the bulb may not eliminate the voltage drain.