Question for the mechanically inclined?

[Gumbo]

Hate to admit but I'm not. At all.

Yesterday, went to go somewhere in my Ranger and it was completely dead. Not even a chime upon opening the door. I thought that was a little strange as the keys were in my pocket and the lights were turned off. Assumed as normal that it was the battery. I jumped it off on my wife's car and it started no problem. Ok, battery is dead somehow. So I put it no the battery charger and left it overnight. Came down today and it's still completely dead. I know the charger works because I had just charged another battery. It showed it was charging while it was charging and that it was charged this morning.

What could be draining my battery? Taking it to the dealer on Monday, but curious on your thoughts.

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[Joeiconic]

What year is your truck? Mileage?

 

[Dr3wDrop]

Bad cell in the battery?

 

[moorejl57]

If you turn on the headlights, do they look nice and bright?

 

[Trigganometry]

See this thread. Long read but a ton of very relevant information https://www.ranger5g.com/forum/threads/mysterious-no-start-magically-starts-issue.26553/

 

[Tom_C]

Bad cell in the battery?

That's my bet.

 

[reidmefirst]

There's a chance you blew the main fuse in the truck. Easy fix, unless of course it blows again.

Get a voltmeter and check the voltage of the battery. Check the voltage both directly on the battery terminals as well as just 'after' the fuse. If it is reporting ~12.2 volts or more it should be good, and suggests that there is another problem with the vehicle. perhaps a blown fuse of stuck relay.

It is possible that when you jumped the vehicle, you connected the positive battery cable 'after' the fuse on the truck, hence jumpstarting it worked.

If the voltage is much below 12v then there is a good chance the battery is completely toast and that charging it will do nothing for you.

 

[reidmefirst]

Check the battery voltage at all three points here:
The main battery is a solid circle.
After the main fuse is circled with a dashed line.
After the secondary fuse is surrounded by a square (somebody can tell me what the 225A and 125A fuses are for, probably the bigger one runs to the starter motor and the other runs to the 'rest of the truck systems' but I may be wrong).

All three spots should read the same voltage. If one of them reads 0 volts, then the fuse to the right needs replacing.

 

[Gumbo]

What year is your truck? Mileage?

2021 and it has 13,431 miles

 

[Gumbo]

If you turn on the headlights, do they look nice and bright?

they don't turn on

 

[Gumbo]

Bad cell in the battery?

That would be awesome. Thanks. I'll try replacing the battery before I take it in.

 

[Gumbo]

Check the battery voltage at all three points here:
The main battery is a solid circle.
After the main fuse is circled with a dashed line.
After the secondary fuse is surrounded by a square (somebody can tell me what the 225A and 125A fuses are for, probably the bigger one runs to the starter motor and the other runs to the 'rest of the truck systems' but I may be wrong).

All three spots should read the same voltage. If one of them reads 0 volts, then the fuse to the right needs replacing.

Thanks for the picture. I need all the help I can get under the hood.

 

[airline tech]

Thanks for the picture. I need all the help I can get under the hood.

Fuse 1: 225A - Generator
Fuse 2: 125A = PSCM (Power Steering Cont Module)

FYI - Those are the Fuse Links

 

[moorejl57]

I believe AutoZone will test your battery for free: Battery Test

 

[airline tech]

C1135A = (4 Gauge) - Bolt On - Starter
C1135B = (20 Gauge) -Plug In - BMS Sensor (Note: Plugs in from Bottom) - Not Shown
C1135C = (1 Gauge) - Bolt On - Battery Junction Box (BJB) Power Feed
C1135D = (1 Gauge) - Bolt On - (Fused 225 Amp) - Generator
C1135E = (4 Gauge) - Plug In - (Fused 125 Amp) - Power Steering Control Module (PSCM)

22 Ranger Lariat Screw Cactus Gray

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