Have Toyota Questions? Ask a Mechanic for Answers ASAP
Are you getting the ODOMETER to register miles? Is the check engine light on or do you have a code reader to check for codes?
Based on your last reply this confirms that there are no codes set in the computer otherwise the check engine light would've been on if it was not seeing a speed signal input from the speedometer. The fact that the odometer is registering miles means that both the sensors are working correctly and this is a mechanical problem with the needle in the speedometer itself. The odometer head needs to be sent out for repair or a new one ordered from the dealer so the mileage can be clocked the same. This would be covered for three years and 36,000 miles unless it is a salvage vehicle.
Instrument cluster is covered for three years and a 36,000 miles it should be no cost to you and will be covered under the normal Toyota warranty. That being said all dealers are different usually what they will do is bring your car in get the mileage off of the car and has to stay overnight while the order the new cluster it cannot be driven so that the mileage changes before the new cluster is installed. You should get a loaner car provided.
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This is pretty clearly warranty for three years and 36,000 miles unless the vehicle has been wracked or is a salvage title then it would have to be investigated as to whether insurance covers or warranty. There should be a way for you on your end to copy and paste or print the dialogue that we have been having.