Fuel Receiver Gauge Malfunction [08/2013 - ]: Description

WARNING: This page is about a different car, the 2014 Lexus ES 300h. However, it is still accessible from the selected car via links, so may be relevant.

The combination meter assembly uses the fuel sender gauge assembly to determine the level of the fuel in the fuel tank. The resistance of the fuel sender gauge assembly will vary between approximately 15 Ω with the float at the full position, and 410 Ω with the float at the empty position. The combination meter assembly outputs auxiliary battery voltage through two resistors that are mounted inside the combination meter assembly. The combination meter assembly measures the voltage between the variable resistor in the fuel sender gauge and the two resistors mounted in the combination meter assembly. Voltage measured at this point will vary as the float of the fuel sender gauge is moved. The highest voltage observed should be approximately half of the auxiliary battery voltage.

HINT:

The fuel level warning light will come on when the fuel level is below 9.7 liters (10.3 US qts, 8.5 Imp.qts).