How to Check Fuel Level on Audi Fuel Gauge?

1 Answers
DelPaige
07/25/25 7:14am
Audi's fuel gauge is integrated with the speedometer, located at the lower right of the speedometer. It displays the remaining fuel level through illuminated segments, marked with three labels: 1/1, 1/2, and R. 1/1 indicates a full tank, 1/2 means half a tank remaining, and R signifies that the fuel is nearly empty. Additional details are as follows: 1. Function of the fuel gauge: It indicates the amount of fuel in the car's fuel tank, which can be displayed via a pointer or digitally. The fuel gauge consists of a stabilized fuel level indicator and a fuel level sensor. 2. Role of the low fuel warning system: It alerts the driver immediately when the fuel level drops below a certain threshold. The fuel gauge mainly comprises two parts: a sender that measures the fuel level in the tank and a gauge that displays this information to the driver. The fuel gauge is a relatively simple device. Current from the sender flows through a resistor, which may be wound around or placed near a bimetallic strip. 3. Bimetallic strip: Connected to the fuel gauge needle via a linkage. When resistance increases, the current through the heating coil decreases, causing the bimetallic strip to cool. As it cools, the strip straightens, moving the gauge needle from 'full' toward 'empty.' A bimetallic strip is made by bonding two different types of metal together. These metals expand or contract when heated or cooled, each with its own specific rate of expansion. The two metals in the strip are specially selected for their differing rates of expansion and contraction.
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