Fresh from the reigning champions being involved in a row over engine maps in Germany last week, it emerged in Hungary that back at the Canadian GP the team was asked by the FIA to change a mechanism that gave it the possibility to alter front suspension settings manually.
Teams are supposed to only use tools to make such adjustments, and the FIA was not happy with the ease by which Red Bull could change its suspension - and therefore alter the ride height. It was asked to modify the system so that tools needed to be used.
The regulations state that teams cannot change suspension settings between qualifying and the race - and in order to ensure compliance tools must be used to make such alternations.
Article 34.5 of the Sporting Regulations states: "In order that the scrutineers may be completely satisfied that no alterations have been made to the suspension systems or aerodynamic configuration of the car (with the exception of the front wing) whilst in post qualifying parc ferme, it must be clear from physical inspection that changes cannot be made without the use of tools.