I have a 2002 4runner w/ only 58,000 mi. CEL light reads that I need to replace Speed Ratio Sensor A and instrument cluster is not working except for the engine temp.(tach, speed, gas and odo not working) Local repair shop said that my instrument cluster circuit board will need to be replaced too. How would both go out at the same time? Replacement cost is between $700 - $800. Is this too much?