This morning, on my way to the store, the car cranked more than usual before starting.
When I left the store, the car wouldn't start. Lights and radio worked fine, but nothing from the engine, not even any cranking.
I called a tow truck, he tried to jump start it with a battery box, didn't work. We checked the fuses, all good.
He said one thing that it could be is the chip key. So I had it towed back home, first thing that I tried was my spare key and boom, it started. But then I tried my old key again, and surprisingly, it started again.

The cables to the battery are tight and show no corrosion. The battery was tested as good a couple months ago, but it's almost 4 years old (Jan 2018).
Any ideas on what this could be? Could it still be a bad battery?

 

Check the power bulkhead connection in the engine bay just behind the right hand shock tower. It’s under a small rubber boot. Check both sides to make sure they’re clean and tight.

 

Battery Yes

Was the starter cranking at a normal speed just the engine not lighting off after a longer period of time ?

On the chance the starter relay may have burnt contacts ( slower starter speed ) on the inside you can swap it with maybe the A / C , fog light or the headlights relays if the same relay part #

The bus protection module by the battery has a habit of the terminal nuts comming loose as well as the mentioned faults bulkhead under the hood

A fully charged new battery may have some positive effect of the chip in the hey in the equation but the jump start attempt may rule that as not the issue

 

To save some money on a tow visit the auto parts store behind the counter and have them make you a jumper clip using blade connectors

The clip requires 8 or 12 inches of heavy gauge wire

Clip the clip in half and strip the wires at the cut

Pin 3 to 5

insert the 2 halves with the stripped wire ends in the air . to start the car with the key in the run position bring the 2 stripped ends together

This bypasses the BPM and its enables like the key chip , transmission neutral switch and engine control module

This is a low power section of the starter circuit not like the battery cables which ultimately power the starter motor

But is high enough power to damage the relay socket if jamming round copper wire into