Check your door lock fluid. Sometimes in the winter excess water will accumulate and will freeze the activator solenoid. Sometimes draining the fluid and replacing it will cure the problem. Synthetic fluid should only be used in newer vehicles as the seals in older vehicles will not hold.Use a test light and check all the fuses. Turn the key on and probe each one on both sides. Make sure the polarity is correct on your test light to avoid frying your computer.
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