Hello all,
I have a 1999 Buick Park Avenue with 100,000 miles and recently experienced an electrical problem. Hoping someone here might see the connection between these symptoms. This all occurred at the same time.
- All interior lights stopped working, except the ashtray convenience light. Trunk light also inop. Cannot turn reading lights on with switches, and cannot turn on by turning headlamp knob,
2, The "Battery State" display indicates "????". I replaced the battery with a new one. No change in the indication. When starting the car, it first indicates 0 volts, then changes to ????.
- The computer readout for MPG, average fuel consumption, and remaining range are off. It shows I go through 35 - 40 gallons a tank, and the average fuel mileage is very low. I still get the same gas mileage as before.
- The rear window defroster button beeps when pressed, but does not light up and the window does not defrost.
- The air conditioner compresses does not engage when running the A/C.
- If I have the keys in the ignition with the door open, the alarm does not beep.
This started one night when I unlocked the doors with the remote and the interior lights did not work. When starting the car, the "Service Vehicle Soon" light illuminated and the air bag light stayed on after flashing the normal amount of times. I had the service light checked and there was no error code. The Service Vehicle light went out the same day, but all other problems remain.
I believe I went through all the fuses and they looked good.
Any ideas?
Thank you in advance, Igor