Thanks also to Andy
so I change the RTM module information at the end of the guide
Hi !
Remote start the car ( Ford S-Max 2.0 TDCi 2017 PowerShift )
4Button Remote smart Key 433 or 434 MHZ DS7T-15K601-EF (please see ford etis )
guide for Ford S-Max mk2
To activate Remote Start, first you need a new key fob with start button (part # DS7T-15K601-EF for S-Max mk2 with 434 MHz).

Note ! remove the metal blanks from the keys, the car doors are closed and the handbrake deactivated.
Programming keys
Determine the backup slot of the passive key.

Place the first programmed key in the backup slot. Press the START / STOP button.
Wait for 4-5 seconds, then press the START / STOP button.
Extract the first programmed passive key.

Within 5 seconds, place the second programmed passive key in the backup slot, then press the START / STOP button.
Wait for 4-5 seconds, then press the STOP-STOP button.
Extract the second programmed key.

Within 5 seconds, place the unprogrammed passive key in the backup slot and press the START / STOP button.
Car doors lock and opened, lights blink
Congratulations on your new key being programmed !!!

Go to MyKeys menu and see how many keys are registered in the machine, by default it should be two, and with a new key - three.
Now use Forscan to change the asbuilt-data
BCM module- configuration parameters
• Remote start - enable
IPC module - configuration parameters
• Remote start - enable
• Remote start - climate settings- enable
• Remote start - front seat- enable (optional)
• Remote start - rear defrost – enable (optional)
• Remote start - steering feel – enable (optional)
some guides recommend
RTM module - configuration parameters
• don't change anything
when the new key starts working immediately( old keys can also be used in the future )
• if the new key
does not work immediately then change RTM module AsBuilt value 751-01-01 x2xx xxxx and reset the RTM, BCM and IPC module. The 2 original keys only work in the centre console.
Go to IPC menu and activate the "remote system"