, i think i mentioned in your other thread it might be a programming issue.
If i didnt - It might be a programming issue. When you're at your dealer anyway, have them make sure that option is enabled.
OP, if you want OEM lights plugged into the OEM harness, with the OEM kit, then yes, it requires a computer reprogram. Technically, anyone with a good OBD-II scanner and programmer can do it... BUT, its a pain in the bumper.
I spent 2 hours at the dealer trying to do the exact opposite, getting the damn things UNPROGRAMMED so that we could de-install them to replace the bulbs with strobes on a security fleet unit.
If i were you, i'd just chat up the service manager and get him to do the programming while you're getting some other service done at the same time, like an oil change, which requires them to plug into the damn computer anyway.