5th Gen 4runner won't start battery good

My 5th get 4runner won't start. It ran last night then this morning won't start. Battery and alternator are good. Not sure why it won't start

 

Welcome. A few more details will help with diagnosis.

 

Is it cranking and not starting? Is it not cranking at all? Does it start but sputter out? It’s just a general no start diagnosis. How do you know the battery is good?

 

My neighbor has a battery tester said it was good. 3/4 tank of fuel. No start at all. It cranks.

 

Could it be a fuel pump issue? Had fuel pump replaced at 60,000 miles from a recall. Truck has 120k miles now

 

check the fuel pump relay?

 

Won't fire up, it cranks over

 

See if you can hear it running with the ignition on and when cranking.

 

Maybe a immobilizer key issue?

Try a different key.

 

Id replace the batteries in all ffobs as well

 

That was the issue for me on my 3rd Gen. Tried everything then put in the spare key and it started right up.

 

Have you tried giving it gas while cranking, or starter fluid to see if it’s a fuel issue? I would also try putting the shifter into neutral and then back into park. I’ve seen where the shifter where shifter linkage has become loose and the vehicle will not start if out of park.

Also, have you check to see if there are any codes?

 

Update: Checked the fuse box. After replacing a fuse truck starts again. Thank you everyone!!

 

Which fuse?

 

Since @4runchewy started this thread with an issue, it would be nice to hear which fuse it was that got replaced, for someone encountering a similar no start problem who comes across this thread.

 

Thanks Captain Obvious.