The battery died i replaced it now the car won't start. its a 2002 626, i was told that there is some chip in the key that needs to be associated with the computer again?

security lockout

Hi , check starter motor and connections.

The dealers are just telling you thing's it could be , doesn't mean they are just going to replace all of those parts or you need all of them , Doing the diagnostic test procedures associated with the DTC - diagnostic trouble code are were they start . Take it to one an have it diagnosed .

security problem in ur key just get a new key made or ur key chip recharged if that doesn't work may have to get ur security bipassed

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start by replacing battery in key fob

When you pulled the lock using that lockout kit, you destroyed the ignition switch security circuit. From what you are saying it had a chip embedded in the key and when those are pulled the anti-theft system engages and kills the vehicle from starting. Normally this stops the vehicle from even cranking but in some cases it just kills part of the power circuit. Replace the ignition switch. This assumes your key was covered on one end with a plastic cover essentially hiding that security chip. Now if this is not the case you are going to have to narrow down what is faulting and confirm you have good connections and that the reason the battery died wasn't the voltage regulator going out.

have you changed the battery of the key lately because the key is like a transimtter for the car and it has a code if the key lost the code the car will not start

THERE ARE MANY POSSIBLE CONDITIONS THAT COULD PREVENT YOURCAR FROM STARTING. 1. NUTERAL SAFETY SWITCH IF THE CAR HAS AN AUTOMATICTRANSMISSION. 2. CLUTCH POSITION SWITCH IF THE CAR HAS A MANUAL TRANSMISSION.3. BRAKE PEDAL SWITCH. MANY NEWER VEHICLES HAVE A SWITCH ON THE BRAKE PEDAL ANDIF THE PEDAL IS NOT DEPRESSED WHILE TRYING TO START THE CAR, THE CAR WON'TSTART. ANOTHER POSSIBLILITY IS THE SECURITY SYSTEM. DOES THE CAR HAVE ASECURITY CHIP IN THE KEY? THESE ARE SOME OF THE MOST COMMON REASONS THAT A CARWON'T START FOR NO APPARENT REASON. HOPE THIS HELPS.