Second time brought 2008 jeep grand cherokee to dealer for new ignition switch.car not starting,installed new starter and alternator batterie. is the problem the ignition switch or not...

Keyless Remote Key Programming Procedure:

1. Insert first programmed key into ignition and turn ignition switch to ON for 5 seconds. ...
2. Turn ignition switch to OFF and remove key.
3. Insert second programmed key into ignition and turn ignition switch to ON. ...
4. Turn ignition switch to OFF and remove key.

More items...

Key Fob Keyless Entry Remote for 2008 Jeep Grand ...

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I saw this problem on a 2010 chev diesel. We had to disconnect the battery. His problem was the ignition switch shorted out causing current to feed the starter . There maybe a broken connection with the switch mechanism that is not allowing the switch to change the internal selection slide.
Now if the key is stuck and not returning, then the tumblers may have come apart . This would require a new key and tumbler assembly.

Sounds like the starter has stopped working. Try this emergency fix. Tapp on the starter with a small hammer and see if it will start working. This is a temporary fix and means that the starter should be replaced

starter relay sounds like to me. or bad ignition switch but im leaning twards the relay, sounds burnt out to me.

did u follow the correct way to jump that var/suv?? there is a method,ground to the block,and pos to the pos side of the battery. then lit it charge for a few minutes, then giv it a shot. u r battery is probably beat down to nuthin. so git it towed and then u will need a new battery.??maybe? lol

You might not believe this, but check your battery. Some of these vehicles have cut-outs when the battery level goes below a preset amount.
I work on Ford brands and on them, a low battery level will even disconnect the Alternator circuit and mess with the starter. Some even act up when the battery slightly dips below 12 volts.

Your antitheft can make your starter cut out. And If you think about it, all of the measurements to make the engine run are based on feedback of voltage and amperage. This is how the engine management system adjusts. If your prime source of power is low, then all of the following electrical readings will be low. Some may be too low to work.

Your fuelpump will hold pressure in a closed system for hours. The fuel pressure regulator will command the fuelpump to stop working if the fuel pressure is at maximum. Without responses from the other components and after satisfactory pressure, the fuelpump will turn off.

IF IGNITION SWITCH FUSE GOOD THE IGNITION SWITCH FAULTY MORE LIKELY.

I was having the same issue with my 95 GMC. I replaced the battery and alternator. It would start fine at times, at other times it would be sluggish. I finally took the starter off and had it checked. Turns out the starter was bad. When it would get hot, it would act as though the battery was dead. Replaced the starter and it has not acted up again. Have the starter checked. Replace if bad.

Seen this happen before, A guy had bought a brand new jeep cherokee, the second morning it would not even crank or turn the motor, he had a faulty key switch, could be your problem as well...

chek supply from battery to ignition swith to starter