At least make the hint disappear after some time, it stays on until there are no damaged component.
Original
Replace the text hint with a wrench icon, a universally recognized symbol for repair. Since the icon notify a needed action relating to the vehicle components, it should be placed near the HUD element that display the vehicle component status. In one glance the player know that repair is needed and what component is damaged without having the notification clutter up the screen.
Suggestion
The “You can fix your vehicle with repair kit from the outside” stays on until all damaged components are repaired to full HP, but there are cases where the player does not have repair kits and the text is more annoying than helpful.
The center of the screen should remain free from HUD element as much as possible as this is where the player look most of the time and where the actions take place.