New cars have a lot of things running in the back ground, you can hook and AMP meter on the battery and see how much it pulls just sitting there, then one by one unplug fuses and see if maybe a relay has welded its self closed and drawing more current then it should in the off postion. if possible hook a battery tender to your car and plug it in, it will keep a small amount of current going to the battery and should keep the battery charged.
SOURCE: '04 Chrysler Pacifica battery won't hold a charge
First try to understand if there is a parasitic drain.
Once you exclude the drain, replace the battery, a battery with shorted cells can cause the drain.
The firmware has nothing to do with drainage, unless the unit is factory defective.
To
measure drainage remove ignition key, connect the amp meter between the
battery positive wire connector and positive terminal.A couple of
milliamps drainage is normal, and is caused by instruments, car stereo
memory, ECU etc.
Start removing more fuses , and open the wiring at different points , trying to locate the problem.
Remove the fuses and see if you have drain by
connecting a meter to
read amps on battery, if you have drain with no fuse, then the problem
is insulated to wiring harness before the fuse, with something shorted
between the battery and the fuseblock.
Also check car stereo and car amp HU, the HU can keep a unit on when the ignition key is off, causing drain.
SOURCE: Chrysler crossfire engine always stall
I have an excellent mechanic at my dealership.
I ran into the problem your are descrbing. Thought it was a fluke but when It got worse took it to the dealership my mechanic diagnosed it as an intermittant failure of the Crankshaft Sensor.
SOURCE: 04 Crossfire not starting
Same thing happened to me. It was giving me problems starting it. It died on me at the stop sign last week. I kept driving. On Friday it shut down on me while doing 60mph on the hwy. I towed it to the nearest dealer. The said they had top replace the cranck sensor and a cam sensor. I paid $1,043.01 for that. Today I couldn't start it....
SOURCE: 2004 Chrysler Crossfire- will not start
I had the same problem with my 2005 and I had it in and out of the dealership. After about 4 times of taking it in they found that it was a relay in the ignition system. I had problems with the car dieing as I was driving. I also had issues withe the car not starting after I got somewhere. When you try to start the car the lights and everything would come on but the engine would not turn over or make any noise at all. For me this was all under the factory warranty.
SOURCE: 2004 chrysler crossfire resetting service light
Disconnect negative battery post for 30 seconds & reconnect. This action will reset the car's computor & remove the light.
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Yep, finally found the problem with my 2005 Chrysler Crossfire. It was not the dealership I purchased the car from either. I ran it over to a Mercedes dealership and they found the problem, just like the other post said it was a relay. Since that was done, I have had no further problems. But it did the same thing left me sitting along side the road due to cutting out on me! That's when I finally said the heck with Chrysler and took it to Mercedes!!!
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