05 RL New Battery Dead after 1 week
#1
05 RL New Battery Dead after 1 week
I just replaced the battery on my 05 RL last month (I bought the car 2 months ago) because after 1 day of not driving it, the battery would be so weak that the car wouldn't start. I know the previous owner already replaced the battery once a couple of years ago, so I figured it was just time to replace it again.
After the battery replacement I have driven the car every day for the last month, everything was fine.
However, I was out of town for 5 days, this morning I go to start the car and it is completely dead. The dome light doesn't even come on.
I know my alternator is good and I know the battery is good, what could the problem be?
I have heard of some power drain issues on 05 RL's, but what is the cause? What parts are the likely culprits?
Thanks in advance.
After the battery replacement I have driven the car every day for the last month, everything was fine.
However, I was out of town for 5 days, this morning I go to start the car and it is completely dead. The dome light doesn't even come on.
I know my alternator is good and I know the battery is good, what could the problem be?
I have heard of some power drain issues on 05 RL's, but what is the cause? What parts are the likely culprits?
Thanks in advance.
#2
The XM Unit. on the drive side of the trunk behind the carpet. I believe it is the bottom connector on the unit back there. i do not use XM so disonnecting it does not bother me.
Also ive seen a few issues of amplifiers blowing a cap and keeps drawing power so remove the amplifier and test Pins to make sure that the amp is not drawing any power
Also ive seen a few issues of amplifiers blowing a cap and keeps drawing power so remove the amplifier and test Pins to make sure that the amp is not drawing any power
#3
Senior Moderator
You could simply have a bad battery. A way to determine if the car is the culprit is to use an Ammeter in series with the 12V terminal to see if there is a current draw. I have had a battery die within a month on Legend #1, and O'Reilly's replaced it for free determining the battery was defective.
#5
I killed a new battery by leaving my cellphone "on" and in the car over the weekend. Since it was in the garage and unlocked, the bluetooth kept searching for a connection and drained the battery.
#7
Senior Moderator
I know the BT will stay on for a while after the car is off, but I did not know it was indefinite. Still, a BT transponder should not have enough current draw to drain a 12V battery with the capability of pushing 700+ amps. I can leave my BT mouse linked for months before the 2-1.5V batteries will die. I think something else was left on and the BT was blamed.
Trending Topics
#8
Remember the issue with using the Trunk unlock button on the door. Lots of people complained about flying out on biz trip and coming back to dead battery.
#9
Safety Car
I know the BT will stay on for a while after the car is off, but I did not know it was indefinite. Still, a BT transponder should not have enough current draw to drain a 12V battery with the capability of pushing 700+ amps. I can leave my BT mouse linked for months before the 2-1.5V batteries will die. I think something else was left on and the BT was blamed.
So the RL has some kind of electronics that prevent a BT phone from running down the car battery entirely.
Thread
Thread Starter
Forum
Replies
Last Post
mada51589
3G TL Problems & Fixes
79
05-03-2022 08:54 PM
adreano17
3G TL Problems & Fixes
3
09-16-2015 02:54 PM