Question about 2003 Kia Sedona
The car suddenly refused to start. A local mechanic called and started it within one minute. Apparantly the immobiliser needed to be reset. This, he said, was caused by low battery voltage. However, there seems to be lots of power in the battery. I had cranked the engine many times over a period of one hour. He says that if the battery voltage drops below 7v then the immobiliser will refuse to work. To reset the immobiliser he said to get a new battery, then turn ignition on/off quickly 4 times. The key fob refused to work some months ago and I've been unlocking the car manually with the key. I'd welcome any comments before changing the battery. Any comments please?
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The engine and transmission in this cars drive train are fully electronically controlled by a computer called the PCM (Power Train Control Module). Whenever a problem like this occurs the computer stores a record of the problem (there are of course some exceptions to this, like the fuel pump for instance) in the form of a fault code in its memory, to read these fault codes you must have the systems memory scanned with a special tool. Once the fault code(s) are read you then must perform the appropriate diagnostic testing to find and resolve the problem(s) DO NOT REPLACE ANY PARTS UNTIL THE DIAGNOSIS & TESTING IS COMPLETED.
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