Where is the valet button located on my viper 5702?

https://www.manualslib.com/manual/187223/Viper-791xv.html?page=29

Consider how the switch will be used before choosing a mounting location. Check for rear clearance before drilling a 9/32-inch hole and mounting the switch.The GRAY wire in the two-pin plug may also be used as a (+) ghost switch input and can be connected to any (+) switch in the vehicle. (See Feature Descriptions section of this guide.)

This is from the installation manual for the Viper 300. To answer your question, it is probably camoflaged. They only needed to tie +12vdc to the input line. What does this mean? Well, my best guess is, they are using one of your switches on your dash to act as the Valet function. Look for where the Gray wire, from the wiring harness of the Viper goes to: that WILL BE your hidden Valet switch. Best of luck!

Viper 300 ESP Installation Manual Plug in Harnesses Super Bright Led Valet...

If you follow this diagram, you should be able to locate your Valet switch. I have seen other questions like this and I believe that they have hidden the function by using an exsisting switch, seldem used(?), in your console. All you should have to do is eith tract the wire that comes from the port on the alarm modules body, or apply +12vdc to one of the leads identified for the valet function.

Best of luck!

Viper 300 ESP Installation Manual Wiring Quick Reference Guide

The valet button location is decided by the installer and is usually hidden. Find the main control unit and follow the 2 wires to the valet switch.

Open door, turn on ignition. Press and release valet switch then, press and hold valet switch. Press lock button on remote. Release valet switch, turn off ignition. Test.

The valet button on the Viper 5701 is located on the antenna which is normally installed on the front windshield. Viper calls this button the "control button".
Here is a link to the owner's guide:

http://www.directeddealers.com/manuals/OG/Viper/G5202V%202011-03%20web2.pdf

The car's computer wont let it start?
Well, if you changed the battery and the viper alarm is the issue; locate the push button valet/programming switch. Turn the ignition on, press and release the switch. The alarm will disarm and you can start the vehicle.
To put the alarm in valet, turn the ignition on then off, within 10 seconds press and release the valet switch. The LED will illuminate solid to show that the system is in valet.

Get in car........alarm will be going offVisually find the black valet button..........it should be next to led on the antennaTurn key to IGN position...........so all dash lights are onWithin 5 seconds push the valet button 1 time..............may have been programmed to more times, but ussually notSiren should stop and you can start the car.
TO put into valet mode
Key to IGNKey to OFFPush valet button 1 time.Led should now be solid.

was it a professional or shade tree install? the following is off vipers website:
disarming without a remote control
This feature allows you to disarm the security system without the
Remote Control should it be lost, damaged, or disabled. In order to
disarm the system without a remote remote control, you must have
the vehicle’s ignition key and know where the Valet button is
located. Be sure to check with the installer for the location and the
number of presses of the Valet button required to disarm the system.
To disarm the security system,
turn the ignition to the ON position.
Press the Valet button the
preset number of times (one to
five times) within 15 seconds. After five seconds the system will
disarm. If the system does not disarm, you may have waited too long;
turn the ignition off and on and try again.
if that doesn't work try this other

valet mode
You can prevent your security system from automatically arming
and triggering by using Valet Mode. This is very useful when
washing the vehicle or having it serviced. In Valet Mode, the
security system will not arm, even with the Remote Control, but
all convenience functions (door locks, trunk release, etc.) will
continue to work normally.
To enter or exit Valet Mode:
1. Turn the ignition on.
2. Turn the ignition off.
3. Press and release the Valet
button within 10 seconds.
The status LED will light solidly if you are entering Valet Mode,
and it will go out if you are exiting Valet Mode.

u can open the drivers door if u have a 2 key remote just press lock aux lock again pretty fast and u should be great.