The fuel filler door actuator relay can fail and prevent access to the gas cap.Google+
Car Problem Reports
Nissan Murano Cannot Access Fuel Filler Compartment
Nissan Murano Problem
Average Mileage: 72,560 mi (25,000 mi - 101,000 mi)
Visitor, 2004 Nissan Murano, 70,000 mi
Unable to access gas tank. Had to have access released
Visitor, 2003 Nissan Murano, 80,000 mi
Broke off plastic piece to access gas tank
Visitor, 2004 Nissan Murano, 52,543 mi
Same problem. My husband took apart inside of car so that if happens again I can push the button from the inside. Drives me nuts to do it!
Fuel filler door failed to open. dealer replaced relay @ $42.00 labor/$22 parts.
Visitor, 2003 Nissan Murano, 88,500 mi
tried to fill with gas, cannot open door
Visitor, 2004 Nissan Murano
This began when I first purchased the vehicle brand new. It's gotten worse and I just bent the little tab and use a cc to open the fuel door now...been doing this for a few years now.
Visitor, 2004 Nissan Murano, 101,000 mi
Unable to unlock filler door. Tried all solutions in owner's manual--still did not work. Bought new relay, but no one at the dealership service dept knows where it's located to replace it.