Try resoldering the bottom pins on the relay board next to ecu , just pull the 6 connectors off pop the plastic cover off and you might find like me a dry joint on the bottom left relay , spent hundreds of pounds on ecu ,wireing , when it was a dry joint ,
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if you turn headlights on and turn key to start do you hear clicking? if so starter is possibly bad,lets trouble shoot your problem.suggest you check the fuses under hood in black box,make sure those are good. when you turn the key, you should hear at least a click or else the starter is not drawing current.try turning the headlights on and at same time turn the key and try to start, if lights go dim the starter is drawing current, does it click? if so then bad starter. if no noise at all,,still could be a bad starter.suggest that you remove the starter and have it checked out.also make sure the car is in park for sure before you do any of this. hope this helps!!
The lights are on their own personal circuit from the starter. Every time you turn the key on the connections are getting warmer each time. You state after the 3rd time it will start. You will need to check all connections to make sure they are very clean and tight. A loose or corroded connection will cause a problem such as yours
This is not the problem I have a chrysler crossfire and experienced the same problem there is some good news if it frequently stops working for no reason the problem is most likely the RCM module has a shortage in it I fixed my crossfire and 3 others buy repairing the RCM its easy and simple any question you can email me I can give you a easy walk through to fix the problem and avoid paying hundred at the dealership it shouldn't take no more than 15 minutes to fix DIY!!
This sounds like one of those interesting problems. What you are going to have to do is find a light bulb type of electrical tester, and a schematic for the wiring on the car (or get a mechanic to do it). When the problem comes up again, you have to find where the power to the module is not coming through a weak connection. It is something that warms up and then breaks connection. The first thing to do is change the fuses for the engine controls. Fuses are cheap and sometimes they develop a crack that opens when they see a rise in temperature from a heavy electrical load or warm or cold weather changes. Other things that cause problems are the wires that connect to the battery, and splices in those wires which are usually hidden inside a bundle of wires. Also inspect the connectors that hook up to the engine module and make sure the pins are not pulling out from tension in the wires and other defects. You said it doesn't turn over, so also check the connections at the starter. Sometimes main power is routed through there.
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....