The tachometer shows the number of revolutions per minute of the engine crankshaft. To do this, it receives control pulses from the ignition system. They are summed up electronically and transferred further to the measuring mechanism of the device with an arrow.
In case of malfunctions, check the corresponding fuse (chapter «Body electrical system») and wiring. Also, the printed circuit board of the instrument cluster may be the cause of the problem. The tachometer itself cannot be repaired by home remedies.
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