Bmw x5 blinker light on dash don't light up but blinkers still work, also radio won't turn on and airbag light stays on any solutions or suggestions?

Usually if my right blinker is flashing fast it means one of my right blinkers is not working either front or back right side. Not sure but I know every vehicle I have ever had was like that. One blinders not working the other flashes fast, on the dash also.
This post he repaired the problem it was the light switch.
Right rear tail light stays lit, won't turn off
https://www.bimmerforums.com/forum/showthread.php?2301226-Rear-tail-light-stays-lit-won-t-turn-off

It means one of your side lights is blown. The lighting computer does a periodic check of all the lights and flags it on the the dash if one is bad. Turn on the lights and walk around the vehicle. Also check the blinker lights.

Check to see is the radio connection plug all the way in and also check to make sure the white wire(ground) is clean and tight on the fire wall under dash.

The dash lights should work in any position. If you mean the warning lights, that and the turn signals go thru the key switch, so that could be a problem with that switch.

There is more than one flasher. One is for hazards and the other flasher is for directional signals. They are located under dash just left and right of the steering column. Don't go tearing up the steering column, then you are asking for trouble. Try the least expensive and labor intensive fix first.

If you need to replace the switch here's a video that shows you how to do it.

It sure sounds like you have a case of "sneak circuits"
These are usually caused by a bad ground somewhere and something is "grounding" through the light bulbs.
Have you changed any wiring or installed a stereo or some other accessory?
You might use a jumper wire and ground the dash and other areas to the negative battery post as a way to find the culprit.

The right blinker issue sounds like you have one bulb out either front or rear check them both. The left blinker issue sounds like either bulbs(both out) or fuse, or worst case blinker switch has gone bad on left turn only so not picking up the signal.

CHECK PIG TAIL AT RIGHT REAR TAIL LIGHT IF LOOKS BAD OR BURN REPLACE IF OK FIND FLASHER UNDER DASH AND REPLACE.

did you check your timing belt