Codes po513 Car won't start, I have to keep jump starting it.

Please be more specific. What do you mean "The car won't start unless you jump it"? Will the engine turn over but won't start? Does the battery act dead unless you jump it? Please write back with more details. The connections at the battery may seem good but are not or are not good enough. If the engine only starts when jump started. Please be as detailed about this as you can. In this situation this can be an indication of a weak part. Such as a weak fuel pump or starter. Let me know if this helps. Good Luck.

You gave two different codes.

P0531: A/C Refrigerant Pressure Sensor Circuit Range/Performance
http://www.autocodes.com/p0531_chrysler.html

P0513: Incorrect Immobilizer Key
P0513 Dodge Incorrect Immobilizer Key

PO513 is incorrect immobilizer key.

if a mercedes

Check the Fuel Pump Relay. behind the battery next to the OVP Over Voltage Protection Relay. They do fail. Occasionally the engine will not start when hot. This becomes more frequent until you are left stranded. If you are comfortable with jumping two terminals you can jump terminals 7 & 8 test the relay. if the car starts your Fuel pump relay is bad.

When you jump started the vehicle, it started as normal and you drove to a shop to have a new battery installed.?? Correct??

1. Who removed the old battery and installed the new one?

2. Did the car start normally immediately after the new battery was fitted? How frequently were you able to drive the car on the new battery before the problem you described appeared?

3. Has anything been done to the vehicle since the new battery was fitted.?

After connecting battery, try using key in drivers door to lock, and /or unlock. Try passenger if that doesn't work, as well as valet key if it came with one.

need to replace the starter

Car starts fine with a jump? You sure your battery is good? If the battery is good then you must have a connection bad right at the battery. If you jump it and it starts then the starter is ok. If you jump it and it stays running with lights on, heater fan on, etc. then the alternator is probably ok. The alternator won't keep the car from starting, but it might not let it start the next time if it is not recharging the battery. Please rate my answer so I am rewarded points for it.

Sounds like you have a toasted battery or alternator. Have you performed a load test on the battery? Have you tried to charge the battery? First remove the battery and charge it externally from the vehicle. If the battery won't hold a charge, or won't hold a charge of 12 volts, replace it. Once you have the vehicle started, test the operation of the alternator. It should be putting out at least 13 volts back to the battery to keep it charged - if it is putting less than 13 volts or more than 16 volts, replace the alternator.

jump the

Starter solenoid

on the passenger fire wall with the key in and on the on position. if the truck starts change it...