How to set double locking?

PROCEDURE. Make SURE the battery you installed is good.

• Driver's door open, key removed from ignition switch
• Within 5 seconds: Insert and remove the key from the ignition switch twice
• Within 40 seconds: Close and open driver's door twice
• Insert and remove the key from the ignition switch. Close and open driver's door twice
• Insert the key into the ignition switch and close the driver's door
• Within 40 seconds: Switch ignition ON and OFF once to program a remote transmitter code whilst retaining the original codes or twice to program and remote transmitter code whilst erasing the original codes. Three times to check how many remote transmitter are currently registered or five times to erase all registered codes
• Remove key from ignition switch. System should now lock and unlock vehicle once, twice or five times depending which mode has been selected. One to four times, slowly, to indicate number of remote transmitters registered
• Within 40 seconds: Press and hold LOCK and UNLOCK buttons simultaneously for 1.5 seconds
• Within 3 seconds: Press LOCK button
• SYstem should now lock and unlock vehicle once to confirm registration, twice to indicate registration has failed
• Within 40 seconds: Repeat button procedure to program remaining remote transmitters.
• NOTE: To exit programming mode: Open driver's dorr
• NOTE: A maximum of 4 remote transmitters can be programmed

If the above programming procedures do not work, then you should contact your locksmith.

Goood Luck!

Question edited for clarity.

The remote start is tied to the Lift Hatch. Your vehicle was likely not locked, so when you double clicked the lift hatch, it did what it is supposed to do and opened the hatch. If that is not the case, take it to a remote / alarm installer to check the programming.

How To Remote Start A Cadillac Escalade? - VEHQ

https://vehq.com > how-to-remote-start-cadillac-escalade
Jan 5, 2022 - 1. Press the lock button on the key fob to secure the vehicle. 2. Press the liftgate button on the key fob twice. Take note that not ...

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programing a remote is not hard but it is timing is every thing!
set up. driver's door open all others closed.
all movements are done at one second intervals.
1 insert the key in the ignition and remove it twice
2 close and open the door twice.
3 insert and remove the key once
4 close and open the door twice.
5 insert the key
6 close door
7 rotate key to run back to off and remove.
(locks should cycle once)
8 press both the lock and unlock buttons for a second on the remote.
9 press the remote's lock button (locks should cycle once more)

reprogram the remote transmitter. first leave driver door open all other doors closed,key removed from the ignition switch. insert key into the ignition switch,then remove it.press lock and unlock on the vechicle door lock control switch at 1 second intervals 5 times. close and repoen drivers door.press lock and unlock on the vechicle lock control switch at 1 second intervals 5 times. insert key into ignition switch. switch ignition on and off twice to program a remote transmitter code whilst erasing the original codes or three timre to check how many remote transmitters are currently registered.remove key from the ignition switch.system should now lock and unlock.twice to indicate programming mode or one to four times,slowly to indicate number of remote transmitters registered.for the solara press and hold lock and unlock remote buttons together, press lock remote button for a second period of 1 second. system should now lock and unlock vechicle.once to confirm, twice to indicate registration has failed.if required repeat button procedure to program remaining remote transmitters.note to exit programming mode close drivers door or insert ignition key.maximum of 4 remote transmitters can be programmed.if akk failed let dealership reprogram remote transmitters.

Look at your MMI in there go to settings and check that your locking is to all doors in the MMI you can set what you like and what door to lock your Drivers door lock may be switched off just change it to on and it will work.

Telephone: Fax: VAT Registration No.:
Infrared remote control
NOTE: Infrared emitter can be seen at front edge of key.
System operation
Switch ignition ON. Ensure clock LED illuminates for 3-5 seconds. Pressing key lock button once activates central locking and alarm. Pressing key lock button twice within 3 seconds activates double locking system.
Programming
When
Key batteries completely discharged. Key batteries not replaced within 15 seconds. Key added or replaced. System malfunction.
How
Obtain all keys fitted with remote control. Turn ignition switch to position I. Wait approximately 10 seconds. Ensure clock LED illuminates.
NOTE: LED illuminates for approximately 5 seconds.
Switch ignition OFF and remove key, while LED illuminated. Programming mode activated for approximately 20 seconds (LED illuminated). Proceed as follows: Point key at receiver (located near interior lamp). Press and hold unlock button Fig. 1 [1]. After approximately 1 second key LED will flash once [3]. Press lock button 3 times Fig. 1 [2]. Release unlock button Fig. 1 [1]. Continue to point key at receiver until LEDs in clock and key have flashed 5 times. Ensure LED remains illuminated. Repeat above procedure within 20 seconds to program remaining keys. To exit programming mode and extinguish clock LED: Switch ignition ON and OFF. Wait approximately 20 seconds.
NOTE: A maximum of 4 keys can be programmed. Fig. 1
Radio frequency remote control
System operation
Switch ignition ON. Ensure clock LED illuminates for 3-5 seconds.


Pressing tailgate release button twice within 3 seconds unlocks the tailgate - if fitted. Pressing key lock button once activates central locking and alarm. Pressing key lock button twice within 3 seconds activates double locking system. Interior lamp illuminates when disarming system.
Programming
When
Key added or replaced. System malfunction.
How
Obtain all keys fitted with remote control. Fasten seat belts and close all doors. From position I, turn ignition switch as follows: To position II. To position I. To position II. To position I. To position II. To position I. Programming mode activated for approximately 20 seconds. LED or fog lamps ON warning lamp illuminates (some models) or the system will emit an acoustic signal to indicate start of programming mode. Proceed as follows: Type 1: Press and hold unlock button Fig. 1 [1]. Type 2: Press unlock button Fig. 2 [2]. Ensure clock LED or fog lamps ON warning lamp flashes (some models) or wait for acoustic signal (indicates correct programming). Wait 2 seconds. Repeat above procedure within 20 seconds to program remaining keys. To exit programming mode: Switch ignition ON. Wait 20 seconds.
NOTE: A maximum of 4 keys can be programmed.

System operation
Pressing remote control lock button locks vehicle and activates system Fig. 1 . Indicators flash once. Pressing remote control unlock button unlocks vehicle and deactivates system Fig. 1 . Indicators flash twice.
Fig. 1
Synchronization
When
System malfunction. Remote control added or replaced.
How
Access alarm system control module located under driver's side lower fascia Fig. 2 . Set memory switch to SET position. Press remote control lock or unlock button. Set memory switch to OFF position. Confirm synchronization has been successful by locking and unlocking vehicle. Repeat procedure for second remote control. Synchronization can also be carried out using diagnostic equipment.
NOTE: A maximum of 2 remote controls can be programmed. NOTE: If remote control fails, system can be deactivated as detailed in the owner's handbook.

turn key twice when opening, ie turn right. once drivers door will unlock, turn twice passengers doors will unlock, and locking is turn anti clock wise once will lock all doors, turn twice will set door dead locks.dead locks will stop openand lock internal button working and handle from opening door. the same actions can be applied to the remote one press drivers door, two press passenger doors, press and hold unlock button for 5 seconds and rear window will open.

To program a remote... note that you must not delay more than 10 seconds between any of the operations.

Driver's door open, all other doors closed, key removed from the ignition switch.

Insert key into ignitions switch, then remove it.

Press LOCK then UNLOCK on the vehicle door lock control switch at 1 second intervals 5 times.

close and re-open drivers door.

Press LOCK and UNLOCK on the vehicle door lock control switch at 1 second intervals 5 times

Insert Key into ignition switch.

Switch ignition ON and OFF once to program a remote transmitter code while retaining the original codes or twice to program a remote transmitter code while erasing the original codes. three times to check how many remote transmitters are currently registered, or 5 times to erase all registered codes.

Remove Key from ignition switch.

System should now lock and unlock vehicle. Once, twice or five times depending which mode has been selected. It will lock and unlock one to four times slowly, to indicate the number of remote transmitters registered if you chose option 3.

Press and hold remote transmitter LOCK and UNLOCK buttons at the same time.

Press LOCK remote button for 1 second: System should now lock and unlock vehicle once to confirm, twice to indicate registration has failed.

NOTE: to exit programming mode, close drivers door or insert key in the ignition.

NOTE: a maximum of 4 remote transmitters can be programmed