Hello and welcome.
Do you recall if the backlighting of these 2 switches burned out at the same time?
Was wondering, because i have never had them go out at the same time. All the switches are fed by the same backlighting voltage supply, so it would not make sense that there would be a common problem with them, since not all switch lights are out.
Anyway, the lighting is internal to each switch and cannot be repaired. The switches must be replaced.
They are dealer only parts.
You would need to pry out the switches very carefully, as not to damage the steering wheel trim.
The switches will come out just far enough to get a small flat blade screw driver behind them to release the electrical connector. And i do mean JUST ENOUGH.
I use a small needle nose pliers to hold the harness, then pop the switch off, then pop the new switch on, while still holding the electrical connector.
They do get warm, but not hot.
If they are pretty hot, more than warm, it would probably be a good idea to replace them as well. They may be on there way out too.