2007 crown vic on 2007 Ford Crown Victoria

My problem is when i use my key remote to unlock the doors some times it works @ somestimes it won't.No problem with the remote because neither will work at times.I will unlock my door manually try to unlock trunk it won't open either.At the same time i will put the key in switch, normally it will make a bepping noise.It would not say anything.When the car is runnig the thermostat display will blink off @ on constantly.Please tell me what is the problem with my car.

by in Linden, AL on September 28, 2010
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1 answer
ANSWER by , September 29, 2010
check the battery in the remote.