The lock needs to be re programmed.
A red fluttering light on a VingCard lock typically indicates that the battery is low and needs to be replaced soon. It serves as a warning for the user to replace the battery in order to ensure proper functioning of the lock.
change batteries and reprogram lock
Three blinking yellow lights mean the deadlock is locked from inside. Guest is in the room
Anti-lock Braking System
If the light is on your dashboard it would be the Anti-lock Brake System
The user manual for Vingcard 2100 can be useful in encoding a key card system. The user manual is usually provided by the manufacturer of the key card.
Light with a lock on the car
It tells you the doors are not locked. The light goes out when you lock the doors. It's just a friendly reminder to lock your doors.
ABS (Anti-Lock Brake System). If the light is on then you have a problem with that system.
Your car is locked
security system
Your anti theft alarm is disarmed