What To Do If Your Car Gauges Not Working At All?

Gauges in your car explain particularly about the health of your car and the position of your car at that instant. Gauges in your dashboard if not working may give you false alarms about the current situation of your car. Some vehicles have gauges that are different from the other vehicle some are more complicated than the other ones.

If a gauge stops working there might be a problem in the gauge itself or the sensor might be the one that is damaged. But if all of the gauges lose control that it may indicate a blown fuse or a defective instrument cluster. But when the gauges in your car stop working, it’s not a situation you can safely ignore. Let’s understand this in the article that what would you do if your car gauges not working at all.

What If Your Car Gauges Not Working At All?

When all of the gauges stop working at once, the problem is generally with fusing or wiring problems. To Diagnose such an issue you need to inspect a fuse that is associated with an instrument cluster or gauges. Your fuse should have power on both sides when the ignition key is turned to the on position. You can check this with a multimeter, or take your car to a mechanic if you don’t have the right tools or aren’t comfortable digging into a diagnostic like this.

If the fuse is not the culprit in that case you should check for power at the individual gauges. You are going to require removing instrument clusters that can very complicated and time-consuming in some car designs. You have to probably remove or trim some pieces and then unscrew the cluster to pull it free. If you are comfortable doing it on your own you can do that but if you are not then you need to appoint a mechanic to do that for you.

If The Dashlights And Indicators Also Fail

There may be some ground issue if your gauges don’t work and your dash lights and indicators also fail. When an instrument cluster isn’t correctly grounded, the gauges and dash lights will usually stop working or work intermittently. In some circumstances, you may be able to inspect the ground by peeking up beneath the dash with a flashlight, but in most cases, you will need to remove the instrument cluster.

Gauges Seem To Move Erratically Or Are Stuck At A Maximum Reading

The cause is frequently a defective component, such as an instrument voltage regulator or a bad ground, when the gauges seem to move erratically or are pegged at the maximum possible reading. A malfunctioning instrument voltage regulator is frequently the cause of erratic readings or gauges that appear to read uniformly low. It may be possible to remove the regulator, clean the connecting terminals, and reinsert it in some circumstances. A loose or defective ground is generally the source of gauges that read full all the time. If you can locate the ground, either physically or with the help of a wiring diagram, make sure it is securely fastened and free of rust or corrosion.

Instrument Cluster Is Defective

In certain circumstances, the complete instrument cluster may be defective. If an electronic instrument cluster doesn’t contain distinct gauges that receive independent inputs from various sending units, for example, a total failure of all the gauges frequently necessitates the cluster’s replacement. In previous times electronic instrument clusters used digital readouts similar to an LCD alarm clock, but current equivalents frequently imitate analog gauges in a far more complex manner. In either case, diagnosing, repairing, or reconditioning this sort of instrument cluster is not that easy and far beyond the scope of someone who is not that comfortable doing such repair work. But still, if you think you will be able to do that then you may try it and hope this works out for you.

When It’s Just A Single Gauge That Is Not Working?

It’s the gauge or the wiring or your send unit that is responsible if there is a single gauge that is not working You first need to locate and disconnect the sending unit. Turn on the ignition, the gauge must be very cold. Now if you connect the sending unit wire to the ground, the gauge should switch to hot. If your gauge moves as it was expected then it is the sending unit that has gone bad. If the gauge doesn’t move whenever you ground out the sensor wire then it must be the gauge that is the faulty component. Similarly, many tests can be performed to know which component is the faulty component. But if you are not in a zone to do it yourself you may ask some mechanic to do that for you.

When a single gauge stops working, the problem is either in the gauge, the wiring, or the sending unit. If you are comfortable locating and removing sending units and sensors, you can diagnose this type of problem yourself. Otherwise, you’ll have to take it to a mechanic.

If the gauge moves as expected, then you can suspect a bad sending unit. If the gauge doesn’t move when you ground out the sensor wire, then you can suspect a bad gauge. Similar tests can be performed on all of the gauges in your instrument cluster, although the specific procedures can differ from one application to another.

When Speedometer With A Physical Cable Doesn’t Work

The problem is a broken cable or a bad speedometer. If you can locate where the speedometer cable connects to the transmission, diagnosing this problem is very easy. Manually turning the end of the cable that inserts into the transmission with your fingers should cause the speedometer to move. If the speedometer doesn’t move, disconnect the cable from the speedometer and turn it manually. If you don’t see one end turn when you manually rotate the other, the cable is broken internally. If it does turn, then the speedometer is bad. You may ask a mechanic to repair the speedometer or the cable for you.


Now it is clear why are your car gauges not working, and what you can do to repair that. This article gave a lot of exposure to car gauges, symptoms of it going bad, and how do you repair that. If you are still facing some difficulties comment them down below we will be more than happy to answer those queries.

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