To do this he has to have access to the trunk, the first photo shows the pump hidden at the bottom of the trunk and the second the lock actuator.
In the first photo you can see the yellow air lines, there are two going upward and the first one, the right hand one is the one to the actuator.
Somehow you have to remove the bottom trim panel and access the first air line and see if you can blow or suck down it to release the lock.
The problem is probably a pump that has got wet, which ruined it.
All the above applies if it is not just a simple fuse blown which seems a rare occurrence.
There are threads on pump replacement, itis a pricey part though - $400 to $500 for a used one.
Is it possible to reach the red thing on the lock mechanism by removing a trim panel ? Isn't that red thing in the second picture a manual release ?