Real Time Help- Charging System

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Joined
Jan 4, 2006
Threads
47
Messages
899
Location
Mineola, TX
Well, when I went out to start the anchor today, I was met with a disheartening click, rather than the usual quick start up. I checked all the doors and stuff and checked that no lights had been left on to drain the battery and got ready to jump it off. When I opened the hood, I heard a relay or fuse clicking, and opened the under hood fuse box. The one for the head was buzzing and clicking, so I pulled it to be sure that was the source. It was, and I put it back and proceeded to jump it off, as I had to be somewhere and didn't have alot of time for diagnosis. My commute was 45 minutes and when I got there, I let it run for a while in the hope that it would help charge the system a little. Well, when I came back out to start it to go home, it was dead again. I also noticed that the positive terminal on the battery had worked itself a little loose, so I tightened that up real quick and headed on about my merry way (I didn't notice it before I left the first time, because my brother in law hooked up the cables). Another jump, a trip back home, and here I am.

Okay, now the questions. Do you think the loose terminal would cause it to discharge the battery, or what? It was fine last night, and dead this morning. Also, has anyone ever heard the buzzing and clicking from the head fuse(relay?), and if so, why does it do that? Thanks everyone, any input would be helpful.

:cheers:
 
The fact that the truck runs once you jump it leads me to believe its not the charging system that is the problem, but rather the battery or a bad connection to the battery.I would clean all the connections and terminals really well and see what happens after it charges for a while.If that does not help replace the battery.
 
notyourmomslx450 said:
Do you think the loose terminal would cause it to discharge the battery, or what?

I think the loose terminal would make it hard to charge the battery. It will only discharge when there is a load on it. Try cleaning and tightening all cables, then trickle charge it overnight and see how it does the next day.
-B-
 
Last edited:
Thanks guys, cleaned and tightened everything up, and charged it all last night. Didn't help, I took it to the parts store and it was the battery. got a new one now and everything seems fine.
 
Just to let you know in case of you need exact same fitment without modifying anything, here is the battery part # 00544MF27F710 cost around $75 -$80 from Lexus stealership.Toyota also carry direct replacement but I don't know the battery part #.

P.S: Little info the battery part # 00544 MF27 F710 actually 00544 battery part, MF27 the group size and 710 cold crank.Below pic's how's the battery looks like.
AC Dryer 07.webp
 
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