I purchased and programmed a new remote to my 5701 starter.security system. the lock and unlock functions work byt i just get a loud beep, flashing red light on the remote and my headlights blink 7 times

the fob might need a batery

SOUNDS LIKE YOU HAVE ALARM IN SILENT MODE

If you need further help, I’m available over the phone at https://www.6ya.com/expert/stephen_fa62cb6d50fe05e8

Was this "beep" from the horn or a siren? The unit could be in valet. Look at the LED on the antenna. Is it on solid? If so the system is in valet. To remove valet, turn ignition on then off, press and release programming button on antenna.
If the LED is not on and, the "beep" came from the siren then, there is an issue with siren itself.

Its made to beep out of the box.

sounds like the remots have lost two way communication. try to disconnect the windsheild antenna.try remotes again after pluging antenna back in.

Hit f and then unlock

You may have lock out the remotes. If that doesn't work DEI has a one yr gurantee on remotes. In your box there should be a registration card. Call them.

Unlock doors
Push and hold f button for 8-10 seconds until amber light is on solid
Push Remote start button for about 4 seconds till amber light flashes 3 times
Put key in to IGN position
Push valet (black button) one time and release
Push and hold valet button
Push either lock or unlock on viper remote
Key out of IGN
Test unit
The horn or siren may sound afterwards to indicate SUCCESS!!!!!!

1st you need to enter the remote into progamming Hold the Function button until the remote gives a long beep and LED light comes on the remote a (it takes about 8 sec.) Then press and hold the remote start buttom until the remote beeps 3 times and LED lights up. Now your ready to program the remote

One of the door has to be open . Insert the key - turn the key to the On position then press the button on the antenna once and then press it again and hold it

You hear a chirp and then you press the lock button on the remote and then you hear a second chirp to recieve confirmation and then release the button and the turn off the key .

Remote should be program

Try to reprogram this. If this routine does not work please let me know and we will try something else

read the owners guide look at page 11 remote control programing you have to follow the instructions after your in the programing mode go to page 12 look at the unlock symbol and finish the programing