Dead Battery...again.
Thread Starter
Driver School Candidate
Joined: Jul 2013
Posts: 47
Likes: 1
From: GA
Dead Battery...again.
A little over a week ago my battery died and I replaced it with a new one (I replaced it myself...just plopped a new one in there). With the new battery in, the car (RX300) behaved beautifully for a little over a week, no CELs or anything.
I went to start the car this morning, and nothing. Dead battery. Again.
So maybe the alternator is at fault?
Or, perhaps it's the Grom Bluetooth adapter I installed nearly two weeks ago? I followed the instructions Grom provided me, as well as the CL write-up for the same device (e.g., plug the Grom unit into the CD wiring harness). The Grom is working fine, but perhaps it's parasitically drawing current from the battery when the car is turned off?
Advice? Ideas?
Tomorrow, I'll take the RX to a shop that specializes in Toyota/Lexus ($100/hour for labor) if I can't figure it out before then. They've worked on my car before.
I went to start the car this morning, and nothing. Dead battery. Again.
So maybe the alternator is at fault?
Or, perhaps it's the Grom Bluetooth adapter I installed nearly two weeks ago? I followed the instructions Grom provided me, as well as the CL write-up for the same device (e.g., plug the Grom unit into the CD wiring harness). The Grom is working fine, but perhaps it's parasitically drawing current from the battery when the car is turned off?
Advice? Ideas?
Tomorrow, I'll take the RX to a shop that specializes in Toyota/Lexus ($100/hour for labor) if I can't figure it out before then. They've worked on my car before.
Lexus Test Driver
Joined: Aug 2009
Posts: 5,724
Likes: 114
From: NJ
It shouldn't be the GROM, as I've been using it for almost a year in my RX300 now and haven't had a single issue. You can try unplugging it temporarily however in case you suspect that's the cause.
Are you sure nothing was left on?
Are you sure nothing was left on?
Lexus Test Driver
Joined: Sep 2007
Posts: 962
Likes: 28
From: Iowa
I agree with Hypervish -- no problems with my GROM, either. The only power it gets is from the factory radio, so there shouldn't be any drain when the radio is off. Although it seems unlikely, maybe you got a bad battery. I would swap it at the store first, then investigate further if it goes dead again. Good luck!
Driver
Joined: Oct 2013
Posts: 101
Likes: 10
From: OH
Did you ever have the alternator tested?
There is any easy DIY check to see if you have anything draining your battery.
Connect a volt meter to you battery and start pulling fuses one at a time. If you see a small jump in voltage when you pull a given fuse, you can narrow down your drain to a single circuit.
I realize this post is old, however someone else with a battery issues may find this helpful if they do a search.
There is any easy DIY check to see if you have anything draining your battery.
Connect a volt meter to you battery and start pulling fuses one at a time. If you see a small jump in voltage when you pull a given fuse, you can narrow down your drain to a single circuit.
I realize this post is old, however someone else with a battery issues may find this helpful if they do a search.
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DaveInMesa
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May 7, 2016 08:48 AM
