me and my brother where driveing our rc cars i was going about 30 up the hill he was going about 20 bang head on crash with each other and my car broke nothing
his car broke a shock and a shock tower
he temporally fixed it by zip tying the rest of the shock to the rest of the shock tower it worked for a while
then he drives it for a while and now he cant brake or go on the throttle but he can steer

Does the throttle/brake servo have any response at all??If not,check the connection,wires,etc...If you still have no response then I'd suggest replacing the servo.The crash may have messed it up.

servo is trash...it is always good to break parts though cause u can upgrade

I am pretty sure you shouldn't crash rc's into each other

You will have Probably mashed the gearing inside the servo. You need a new one m8.