Volvo XC70 Fuel Gauge Not Working – How To Fix

By Max Anthony •  Updated: 02/21/22 •  6 min read

Volvo is one of the most respected automobile companies in the world. Their cars are very good looking and powerful. There are different types of Volvo models that you can choose from. After being founded in 1927, Volvo has become one of the most famous car companies in the world. Volvo cars are very popular for their good quality and design. Moreover, they are known for their reliability and safety.

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The cars from Volvo are made in different parts of the world. The main production facility is located in Sweden. However, there are some other facilities around the world that produce these cars as well. There are different types of Volvo models that you can choose from. The model that we will discuss here is Volvo XC70. This car has an interesting history and has become a symbol of Swedish engineering excellence.


The XC70 is one of the most popular Volvo models that you can choose from. The first version of this car was released in 1996, though it was named V70 at that point. The XC70 is known for its stylish design and great performance. Moreover, it has ergonomic front seats and a comfortable cabin, perfect for any type of driving, as especially for people with a large family.


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However, the XC70 is not without its faults. For example, some people have complained that the car’s fuel gauge can sometimes not work properly. This can be a serious problem if you need to fill up the tank of your car.

What is a Fuel Gauge For?

A fuel gauge is a simple device that is used to indicate the amount of fuel that is left in your car’s tank. It usually shows you how much gas you have left so that you can decide whether or not to stop and fill up.


This gauge is especially important when you are driving on long distances, especially if it is a particularly long trip. The fuel gauge will tell you how much gas you have left, so that you can plan your trip accordingly.

Why is My Fuel Gauge Not Working Properly?

When your fuel gauge does not work properly, it could be due to a number of different problems. Here are some of the most common possibilities.


1) Problems with the circuit

If the circuit is damaged, then your fuel gauge will not work. This can be caused by a faulty electrical connection in the car’s wiring system.


What is causing the fault? Depending on where the fault is, the fuel sender may not have a source voltage, the gas gauge may have no fuel sender voltage, or the ground for both of them may be interrupted. It is possible that loose connections and corrosion can also cause problems, especially at the fuel pump module, which is generally exposed to the elements.


The most common places for these problems to occur are at the fuse box and under the hood. If you have an older Volvo XC70, then it is important that you inspect your wiring regularly to ensure that there are no broken or frayed wires.


2) Sending unit failure

If the sending unit is not working properly, then your fuel gauge will not work. The sending unit is located at the fuel pump module and controls the flow of gas to the gauge. If it is damaged or faulty, then your fuel gauge will stop working.


When the vehicle is moving, the sending unit is constantly moving, and rubbing the variable resistor continually. Because the contacts are worn over time, there is a risk that the contacts could wear out, which is why there are open circuits. So if the gauge interprets the voltage feedback from a dead sender as full or empty, it may well peg the gauge no matter what level of fuel it actually has.


What are the symptoms? In this case, there will be no change in pressure at the pump, so you won’t know how much gas you have left. If this happens to you, then you can use a fuel pressure tester to find out what is wrong with your sending unit.


3) The gas gauge is faulty

In some cases, the gas gauge may be faulty. It is possible that the display will not work properly or that it will show incorrect readings.


What are the symptoms? The most common symptom of a faulty gauge is that it reads incorrectly. If you look at your gauge from outside the car, then you should see a series of marks on the gauge face.


These marks represent how much fuel you have left in your tank. If you do not see any changes in your gas gauge ever after driving the car, it’s a sign that the gas gauge is probably the root of your issues.


If the internal circuit of the gas gauge is faulty, it should be possible for the gauge to function only in one section., like between Half and Full or Half and Empty. When the internal circuits are shorted, they may be pinned to Full, Empty, or firmly in Half. If the circuit is open, the gas gauge may stay at Empty no matter what.


4) A fuse has blown

If a fuse has blown, then your fuel gauge will not work. A fuse is used to protect the electrical system of your car and other components from electrical shorts. If a fuse blows, then you may be able to see it looking broken inside the fuse box.


Check your owner’s manual to find out where the fuse for the gas gauge is located. When you locate it, open the fuel box and check all the fuses inside it. If any of them are damaged or completely broken, they should be replaced.


When a fuse blows, it could be due to a number of different problems. For example, the fuse may have overheated or the connection may have been damaged by corrosion. If a blown fuse doesn’t seem to be the issue, though, you can move on to the next check.

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Max Anthony

Max is a gizmo-savvy guy, who has a tendency to get pulled into the nitty gritty details of technology and cars. He attended UT Austin, where he studied Information Science. He’s married and has three kids, one dog and a GMC truck and a Porsche 911. With a large family, he still finds time to share tips and tricks on cars, trucks and more.

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