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Instrument Panel

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Symptoms of a Bad or Failing Instrument Voltage Regulator
Common signs include dim or flickering gauges, inaccurate or erratic readings from the voltage regulator, and an inoperable instrument cluster.
How Long Does an Instrument Voltage Regulator Last?
Having a fully functional instrument cluster is important due to the information that it gives you about the operation of your engine. With all of the different things that can...
How to Monitor Your RPM Gauge to Get the Best Performance Out of Your Car
A car tachometer, or RPM gauge, shows the speed the engine is spinning. Watch your RPM gauge to improve your car's performance and fuel efficiency.

Related questions

Question
Instrument panel lights on and rear wiper not working. What do I do?
Volkswagen (later models at least) use a power distribution unit (PDU) that aggregates the usual fuse box items onto larger current supply wires, which then have much larger fuses (i.e. 25, 50 100 amps). It is possible that swapping the...
Question
Speedometer, revolutions meter, and miles counter not working.
Hello and thank you for contacting YourMechanic. It seems that there could be a ground wire that is loose under the dashboard. If the ground wires are all good and tight, then the instrument cluster panel needs to be repaired...
Question
Instrument cluster going haywire
There have been a variety of digital instrument panel problems with this particular Pontiac model, and a common thread is a loose, or poor connection of the positive battery cable (battery to the electrical system). Ground cable issues as well...
Question
Instrument cluster acts like there is a short in it.
Hi there. There are ground wires in the dash that need to be checked that are related to the instrument panel. See if the ground wires are tight and free of corrosion. Then check the battery cables for that they...
Question
My car dashboard will not light up
This usually means that there is a short in the circuit board for the instrument cluster. The instrument cluster has a circuit board in it that houses the lights for the instrument cluster. The computer sends information to the circuit...
Question
Instrument cluster is off with a P0600 reading
Hello there, the P0600 code is not one that is normally seen on your 2003 Mercedes ML350. The P0600 code tells us there is a communication link issue with the ECU. This may have been caused by the fuel pump...
Question
Two instrument panel lights are not working - the fuel warning light and the seatbelt warning light.
If a sensor has failed for the seatbelt light, then the light will come on. If the low fuel warning light does not come on, it indicates that either the vehicle was not driven long enough to make the light...
Question
Bad instrument cluster
With a reoccurring issue like this, you can almost guarantee that another malfunction is causing the failure. If this cluster has failed, you will end up needing another one. But do not replace it until you know what the main...
Question
My driver information center resets itself
Hello. Most of the time when this occurs on your vehicle, it is caused by an issue with the battery. If the battery is failing or if there is a bad connection at the battery then this will occur. If...
Question
The fuel pump and dashboard lights indicator shut off after the 4 wires in the neutral safety switch shorted out
It sounds like you may some blown fuses from that shorted switch. Inspect the fuses and replace as necessary. An electrical wiring diagram and a digital volt/ohm meter will be needed for further diagnosis if replacing the fuses does not...
Question
My 97 Suburban dials jump all over the place.
Hi and thanks for contacting YourMechanic. Sounds like that there is either a loose ground wire to the gauge cluster panel or the gauge cluster panel is shorting out. Look under the dash for any broken or loose wires. If...
Question
Instrument lights come on. Speedometer and tachometer stop working, then come back on periodically
Hi there. There is a loose ground that is causing the lights to appear at any time. Check the battery cables to ensure that they are tight. Check the ground wires under the dash and make sure that they are...
Question
Truck won't stay running
Hey there. Did you charge the battery before starting the truck with the new alternator? An alternator trying to maintain system charge and charge the battery from dead puts a lot of stress on the alternator and can cause a...
Question
My dashboard instrument panel stopped working all of a sudden
Instrument panel failures were a problem with this model, largely caused by water leaks in the windshield/cowl area that found their way to the instrument cluster (Technical Service Bulletin 383318). There was even an informal customer satisfaction program early in...
Question
Dashboard havoc
This may be related to a short or a faulty instrument cluster voltage regulator. The instrument voltage regulator regulates the voltage supplied to the various gauges in your vehicle’s dash. When this is not working properly, this may cause the...
Question
Where is the instrument panel to find the trip reset button to press and hold in order to reset the trip mileage?
Hi there. When resetting the trip mileage on your vehicle, look at the steering wheel and just behind it is the instrument panel (the part that has all of the gauges). Look on the instrument panel for a black small...
Question
I changed the fuel pump and now my gas gauge doesn't work
The fuel level sender on this vehicle is connected to the fuel pump module that goes in the fuel tank. When you were installing the fuel pump module back into the fuel tank you may have inadvertently bent or damaged...
Question
I have a problem with my instrument cluster back lighting.
There is a function on your vehicle where you can change the intensity of the backlight on the instrument cluster. There may be a problem in the circuit at the rheostat that controls the dimming of the backlighting or the...
Question
Instrument Cluster Lights Come on and Off
This may be related to a short or a faulty instrument cluster voltage regulator. The instrument voltage regulator regulates the voltage supplied to the various gauges in your vehicle’s dash. When this is not working properly, this may cause the...
Question
I replaced both Vss but still problems exist with speed over 20 mph. Speed tac and rpm gauges go crazy.
The problem may not have been in the sensors, but the electronics inside the instrument cluster itself. If the circuit board has corrosion or is cracked, it may interrupt the electrical signals to the motors that move the needles across...

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