One of the most inconvenient points that can happen to your LeSabre is when the speedometer stops working. Friend don’t yes, really realize how much girlfriend look at the thing until it’s just constantly sitting at 0 MPH while driving down the road.

If her Buick LeSabre’s speedometer is not working, it’s normally going to be led to by an concern with the VSS (vehicle speed sensor), or a bad ECU. The VSS is typically not very expensive, and also they room not that an overwhelming to replace.

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Vehicles supplied to usage a cable that would usually run indigenous the tail pillar of the transmission to the speedometer. There to be a physical/mechanical connection in between the drivetrain and the speedometer.

Instead of this direct connection, a modern-day vehicle offers the auto speed sensor and relays that information to the speedometer. The VSS is one component of a system of sensors the helps save you for sure (traction control, ABS, cruise control).

Speedometer Not working Causes: Buick LeSabre

A modern-day vehicle’s speedometer take away the input indigenous the automobile Speed Sensor and also sends that data come the ECU. The ECU is programmed with your LeSabre’s equipment ratios and also stock tires height. It combine this data to send the speed analysis to the instrument cluster. The causes of a negative speedometer will commonly be discovered in these 4 things:

A common VSS ECU– her LeSabre’s Engine manage Unit (ECU because that short) is the computer that takes every one of the details that the vehicle sensors compile and also uses that to control the automobile systems, and also sends crucial vehicular telemetry data come the driver via the instrument cluster. If there is miscellaneous wrong with the ECU, it may no longer have the ability to send the rate telemetry to the tool panel. This one is a possibility if there are no VSS related trouble codes, however taking a look at the wiring would be a much better place come go before taking a look in ~ the ECU. Speedometer Itself– The odds that the speedometer going out all by itself, if the rest of the gauges continue to job-related are not great. Most of the moment if the speedometer is out, it way that over there is a bigger difficulty with the entire instrument cluster. Do every one of the other gauges work? If yes then, the problem is probably not in the speedometer, however the signal going come it. Other gauges went out too? Ok, looking in ~ the instrument panel and also ECU space going come be where to start. Instrument dashboard first.

LeSabre Speedometer Not functioning Diagnosis

If your Buick LeSabre’s speedometer is no working, the first place come go would certainly be to inspect the organization engine quickly light (if applicable). Now, take it out and see if the cruise regulate still works. If the does, that’s a pretty great indication the the auto speed sensor is simply fine. If the doesn’t, it’s time to take it a look at it.

After experimentation the cruise control, girlfriend would want to relocate on to the VSS and the wiring going to and from it. Before sticking her head under the vehicle, check to view if the fuse going to the VSS is blow. If it is, replacing it may temporarily restore your LeSabre’s speedometer, however that doesn’t fixwhy the speedometer stopped working. If every little thing still checks out, it’s time to move on come the ECU.

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Driving there is no a speedometer deserve to be rather dangerous and off putting. Us recommend making use of a speedometer app. They use the GPS developed into your smartphone to provide a an extremely accurate speed reading. You can throw the on your dash until you gain it fixed. Great luck resolving your LeSabre’s speedometer! If there is anything that you would like to add, please feel complimentary to leave a comment below.