99 Ford Windstar/Viper 100 Keyless Entry

The Viper keyless entry remote when pushed unlocks all doors the first time I push it, after that it will only lock & unlock the two sliding & rear doors. I can see the door lock on the driver side try to move a little in lock or unlock. Also the front locks wont work by using the door lock switch. The Viper 100 unit worked fine for about 2 years. Is the problem in the keyless unit, the door switch, or the actuator? Thanks for the Help, Bob

If it don't work with the factory switches and the remote then it is probably the actuators.Certified Security Specialist

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