Is your car an automatic transmission or standard? If it's automatic, try starting your car in neutral instead of park. Had the same problem with an Oldsmobile Firenza.
Answertry cleaning the battery conections as they do get corroded and that is where the battery is under the back seat. good luck greg! Answeron my 95 olds it was due to a cracked oil pan, every time i tried to start it the back seat clicked, i had it towed and the repair shop replaced the oil pan and the car started right up the oil sensor would not allow the car to turn over.-answer-My 95 just did the same thing,i tried jumping it ,it wouldn't start,i charged the battery and it still just clicked.The little eye on the battery that tells you if it is good or bad,it was green it meant it was good.I thought i was gonna have to put a starter in it,but my buddy told me that his BMW did the same thing and it ended up being the battery.He brought over a battery the next morning, and sure enough i put the battery in and it fired right up.one thing i didn't do is load test the battery to check the cca of the battery,it still reads 12 volts with a multi-meter.I replaced it with a brand new optima red top rated at 980 CCA.Next is to upgrade the alternator to a higher amp alt.Anyways i hope this info can help you in any way.It tells you to get you battery every 3-6 months.
Low Battery
The Battery is shot and you need to replace it.
Anywhere from 13.5 to 16 volts at the battery with the engine running.
The alternator is run by a belt connected to the engine. When the engine is running the alternator is turning. The alternator is what produces the electrical current that charges the battery & powers everything electrical while the engine is running. the battery is mainly to start the engine.
The "electrical pressure" probably refers to the voltage. This is usually provided by a battery. The battery is recharged by the engine when it is running.
The electrical system
Battery.
Yes, the alternator provides electrical energy to keep the battery charged. If the alternator isn't functioning, the battery will discharge and there will be insufficient electrical energy to operate the ignition and other electrical components. Understand that a battery is only an electrical STORAGE device. Electrical energy is produced by the alternator. The function of the battery is to provide electrical energy for NEXT time you want to start the engine. Once the engine is started, the alternator must take care of all electrical requirements of the vehicle as well as for providing enough additional electrical energy to replace electrical energy to the battery that was last used when the engine was started.
Weak battery? Loose or corroded battery cables? Starter solenoid?
The function of a battery is to provide electrical energy to devices which are connected to it.
could be bad cells in the battery, but my bmw ended up having a seized motor, starter was engaging and clicking because it couldnt turn the engine. try putting a socket on the engine crank pulley to see if engine will rotate
You either have a weak battery that needs replacement or you alternator is defective. Start the engine and check the voltage at the battery with a volt meter. It should read from 13.5-16 volts. Anything less and the alternator needs replacing. If it is reading within that range the battery is defective. Another possibility is a defective battery cable that is swollen or frayed.