Yes. WPA only and close. If you have a weaker signal you will have connection issues. What worked for my phone would not work for the car. I had to install a new Access Point in the room next to the garage so it was 20 feet or less from the car. Updates, including maps, are blazing fast.
But, I am concerned that you are not seeing Wifi signal at all. I always saw the SSIDs. I just had issues establishing a connection until the strength was higher.
BTW, you don't have the car wrapped in a metallic film do you?