Radio turns off and truck wouldnt crank

Alternator, maybe a fuse I would think.

 

As odd as this may sound clean your battery terminals, I thought I had a starter going out once but it was actually my terminals were dirty and corroded

 

hmm well, did your truck seem to run odd at all when the radio was off and the clock was dim

 

Just saw this.....gimme a call.

 

I would think if it was the alternator it would affect the way the motor was running along with the radio and clock not working properly, but maybe it's just on the fritz

 

When I had my alternator die in another car, it did the exact same thing as you are experiencing. It started back and completely drained my battery two days later.

Is your 2009 alternator a Toyota brand?

 

My bet is on the alternator then.

 

Yeah I'm stumped hopefully someone will chime in... But maybe it wouldn't hurt to test the alternator just in case

 

Mine did this a year ago radio went nuts, the shut off then my truck turned off while going like 35mph it was weird. changed the alternator and no more problems.

 

get a voltmeter and check the voltage on the battery. it should read 12-12.5 if it's fully charged. while running, it should be close to 14V. or take your battery and/or alternator to you local parts store to get it tested.

check both reading and the results will tell you which parts is bad.

 

I'd guess alternator too.

TLDR version: I was cruising down the freeway in my Corolla one Christmas Eve on my way to my parents' house when the check engine light came on. Being far from home and not being mechanically inclined, I continued on. After a while my headlights slowly dimmed until they went out and I was driving in near darkness. I decided the prudent thing to do was to take the next exit. I found a gas station with a payphone (long before mass market cell phones), parked my car and called my dad. I tried to start the car and it was a dead Jose'. Luckily McD's was still open so I waited there for an hour for my dad to arrive. The following Monday morning we hit Schucks and picked up a new alternator. Luckily it was a 10 minute swap as it was on top of the engine in my Corolla. Jumped it and it fired right up. Let it idle for 20 minutes, turned it off, and there was enough charge again to start under it's own power.

So, yeah. Alternator in my experience.

 

Check your grounds. They are notorious for causing weird problems like that. Check the voltage drop on your battery cables as well. A high drop indicates a bad cable/connection.