On my 1998 Grand Caravan I experienced the same phenomenon. The flashing lights signal a need to run a calibration test and an AC cool down test. To conduct these tests set the air flow from the heater to the dash (in your face) and the heater control to hot. Turn the fan to the maximum position. The engine must be running. Press the Rear Wiper button and the Rear Wiper Washer button down simultaneously for 5 seconds and release. The buttons will start flashing in a different (alternating two by two)pattern and the air flow will be changed to the different positions and then the air conditioner will try to cool down a particular component to a certain point. After these tests two or more of the lights should go off. I had to run the test twice to get all the lights to stop flashing.
Use a sledge hammer. Mine goes out to lunch for 2 days after any battery disconnect.
Disconnect the battery and reconnect it at midnight. The clock will then start at 00:00.
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As you will need to disconnect the battery you will need to reprogram the preset buttons on your radio and set the clock. Other than that there is nothing else to do.
i know one way is to briefly disconnect your battery than the clock should read or flash 12:00 than use the little buttons to reset it Disconnect ground wire on battery and wait about 15-20 minutes. that will reset the cars whole computer system.
You need to start the car and then disconnect the immobilizer while its running, if its the same as mine the buttons for the immobilizer will be beneath the ashtray? The plastic thing that the buttons are on lifts up and you can disconnect it from underneath by removing the plug. If your having problems with the code for the immobilizer try disconnecting the battery then re connecting it and it should reset the immobilizer code to either 0000 or 1111, start the car then disconnect the immobilizer as above.
The overhead switch is probably turned off.
There are two small buttons below the LCD display, left for hours and right for minutes. These buttons can stop working with age, and the easiest solution is to either remove the instrument pod fuse or disconnect the battery just before midnight and reconnect at midnight.
If the key has the built in remote buttons, it has sentry key.
Disconnect them from any power supply!
Push the set button and within 10 seconds press the seek and scan buttons.
The built in garage door buttons run off of the cars battery.