HOW DO YOU REPROGRAM KEY FOB FOR 2014 BUICK LACROSSE

Question edited for clarity.
Question moved to model category.

An answer on Just Answer dot com states

The sensor is located on the left rear of the engine behind the exhaust as seen in the attached file here. The connectors on these sensors are also known to go bad and not make a good connection.

But there is no diagram!

This might help

https://buickforums.com/forums/threads/coolant-temperature-sensor-location-on-2017-buick-lacrosse.65662/

https://www.google.com/search?q=2014+buick+lacrosse+coolant+temperature+sensor+location

Videos that MAY help

Question edited for clarity.
Question moved to model category.

https://www.google.com/search?q=2014+Buick+Lacrosse.+location+of+the+body+control+module

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Try any Buick dealer

Sorry , but factory service info .shows you need a scan tool to do programming .

That button got worn out. Check with whoever installed it to get another one.

Door Lock Mechanism Sticks : Buick LaCrosse Common ...

repairpal.com > Problems > Buick > LaCrosse
Door lock mechanism not operating properly on Buick LaCrosse. Door lockmechanisms ... problem details. 2005 Buick LaCrosse126,000Visitor .... door panel to repair? Lock will neither lock or unlock using key fob but does work manually.

I believe your buick has setting in the menu scroll to where it says key fob, if they took it out of your year then the dealer has to

the key fob has to be programed by a dealer for your car or approved and authorized dealer to program the fob to you car and the the memory and code authorization codes to access the card functions.

You might try this:

http://blog.carandtruckremotes.com/2014/09/11/how-to-program-buick-lucerne-keyless-entry-remote-fob/

But if it does not work you will need to see if there is a local locksmith that can assist you.

this can be done at the dealer.