In this paper, a dynamic fuzzy energy state based AODV (DFES-AODV) routing protocol for Mobile Ad-hoc NETworks (MANETs) is presented. In DFES-AODV route discovery phase, each node uses a Mamdanifuzzy logic system (FLS) to decide its Route REQuests (RREQs) forwarding probability. The FLS inputs areresidual battery level and energy drain rate of mobile node. Unlike previous related-works, membershipfunction of residual energy input is made dynamic. Also, a zero-order Takagi Sugeno FLS with the sameinputs is used as a means of generalization for state-space in SARSA-AODV a reinforcement learning basedenergy-aware routing protocol. The simulation study confirms that using a dynamic fuzzy system ensuresmore energy efficiency in comparison to its static counterpart. Moreover, DFES-AODV exhibits similarperformance to SARSA-AODV and its fuzzy extension FSARSA-AODV. Therefore, the use of dynamic fuzzylogic for adaptive routing in MANETs is recommended.