2007 RX400h 12v battery issue
#3
Lexus Test Driver
Interstate Battery
Only if you are buying Walmart's junky batteries. haha
I bought 4 Deep Cycle Marine batteries from them and they lasted 1-1.5 yrs before not holding a charge anymore.
I run an Interstate brand battery on my car and they run about 5 years down here in South Florida heat.
I bought 4 Deep Cycle Marine batteries from them and they lasted 1-1.5 yrs before not holding a charge anymore.
I run an Interstate brand battery on my car and they run about 5 years down here in South Florida heat.
#4
Pit Crew
Thread Starter
Maybe I am doing something wrong. After about 1.5-2 years, I find the battery does not have enough charge to sit for a few days and start the car.
On the starting subject, why does a hybrid car need a separate 12v battery to start the car?
On the starting subject, why does a hybrid car need a separate 12v battery to start the car?
#5
PS: Lexus sells 8-years warranty 12-volt batteries (free replacement for the first 2 years, and 50% discount for new battery after that).
PPS: Do you have any after-market gadgets in your car?
#7
Pit Crew
Thread Starter
I am still having a small battery problem. The 12v battery that starts up the car never lasts more than 2years. Although the problem is not that bad, I would like to attempt to find the culprit. What should the car be drawing from the battery in sleep mode in mA? Do I put my multimeter in between the battery and one of the terminals and just unplug fuses?
Thank you.
Thank you.
Trending Topics
#8
Lexus Fanatic
Best way is a tool like this
It will not be super accurate but good enough, normal draw should be less than 100 milliamps after a few minutes then drop down to half that 20-30 minutes later.
It will not be super accurate but good enough, normal draw should be less than 100 milliamps after a few minutes then drop down to half that 20-30 minutes later.
#9
Pit Crew
Thread Starter
Best way is a tool like this
https://www.amazon.com/dp/B08MTCMWLB/
It will not be super accurate but good enough, normal draw should be less than 100 milliamps after a few minutes then drop down to half that 20-30 minutes later.
https://www.amazon.com/dp/B08MTCMWLB/
It will not be super accurate but good enough, normal draw should be less than 100 milliamps after a few minutes then drop down to half that 20-30 minutes later.
FRDEF 40 MilliAmps
FRFOG 21 MilliAmps
RR DOOR LH 30 MilliAmps
RR DOOR RH 30 MilliAmps
Does this sound plausible?
#10
#2- I'm assuming you're not running a battery maintainer (C-Tek or Battery Tender). Either will bring a decent battery up to 100% and keep it there. They are neither a "battery charger" not a "trickle charger". They usually run @$70-$125USD and are very worthwhile. C-Tek is included with such cars as Ferrari, Bentley and several others
#3- your issue could be parasitic drain, bad alternator, poor ground, or battery connection/battery terminals, driving short distances often
I use a CTek now have used several Battery Tenders on cars and motorcycles in the past highly recommend
#11
Parasitic drain
I had a battery drain issue on my new 2006 RX400h that turned out to be due to a “device” the dealer installed to provide some kind of premium service that required a subscription from Lexus. I never authorized the service but the device was left in my car until I took the car back to have the battery replaced under warranty and they found the device was draining the 12V battery, I still have to replace the battery every three years but I buy my batteries at Costco and get them prorated without any questions. That worked great until the price of their batteries jumped the last time I did that and I had to pay the difference!
#13
Hybrid battery starts the car/engine. 12v is an auxiliary battery to power all car systems.
PS: Lexus sells 8-years warranty 12-volt batteries (free replacement for the first 2 years, and 50% discount for new battery after that).
PPS: Do you have any after-market gadgets in your car?
PS: Lexus sells 8-years warranty 12-volt batteries (free replacement for the first 2 years, and 50% discount for new battery after that).
PPS: Do you have any after-market gadgets in your car?
#14
Racer
iTrader: (1)
my last 3 batteries on this car seems to be on the 3-year plan. exactly. In fact, they all failed on month 37 or 38, which meant the 36 month warranty at costco was null.
I buy the $100 Interstate battery at Costco. California car, normal drive cycle car. I would've added a bigger battery if it helps/fits.
I buy the $100 Interstate battery at Costco. California car, normal drive cycle car. I would've added a bigger battery if it helps/fits.
#15
Pit Crew
Thread Starter
Originally Posted by dpleticha;[url=tel:11687375
11687375[/url]]FYI - https://support.lexus.com/s/article/...-coverag-10506