Why as my rev counter stopped working on my frontera?

There could be several reasons why the rev counter on your Frontera has stopped working. Common issues include a faulty connection or wiring, a malfunctioning engine control unit (ECU), or a broken tachometer itself. Additionally, a damaged signal from the ignition system or a problem with the crankshaft position sensor can also affect the rev counter's operation. It's best to check these components or consult a mechanic for a thorough diagnosis.