The speedometer may stop functioning with code P0722 stored in the powertrain control module (PCM). This may be caused by a worn speedometer gear due to coolant contamination of the transmission fluid. If contamination is found the radiator is most likely at fault. The transmission should also be thoroughly inspected and repaired or replaced as required.
Our technicians recommend having the timing belt replaced at 60,000 miles. They also recommend inspecting the water pump for coolant leaks while servicing the timing belt. If the water pump shows signs of leakage it should be replaced at this time.
Our technicians highly recommend that the transmission is serviced every 30,000 miles to avoid problems and maintain optimal operating order. If the fluid is dark in color, the transmission should be flushed.