Hello I will help you with your question,
If this vehicle is not equipped with ABS check the output of the right front wheel speed sensor as this is what supplies the signal to the speedometer on a NON ABS vehicle
Let me know how I can help you
Thanks for your response.
My Santa Fe does have ABS. So the question is would it be one of the sensors on the wheels and is it just the front wheels that would have the sensors?
If you have ABS the fault is further up then. The output speed signal (VSS) is mounted just above the right axle shaft where it exits the transmission.
The signal goes to the ABS unit where it splits off to the cruise unit and the speedo/odometer.
You may have a problem with the signal at the cluster or the cluster has failed.
Do you have an oscilloscope or frequency counter or scantool that shows MPH to see the signal?
OK, as long as they are sure the cluster is working and the other shop has install a VSS sensor then it has to be between the two.
The wheel sensor is not used for the speedometer when you have ABS the VSS (Vehicle speed sensor) is located on the transmission above the right axle and this is where the signal comes from.
There are three wires to this sensor and there will be a power, a ground and the signal from the sensor to the ABS computer where it splits off to the cruise and the speedometer on the cluster.
How can I help you with this?
Yes they need to find out why the signal from the VSS is not getting to the cluster.
The transmission has sensors of its own to see input and output speed, this sensor is used for ABS, cruise and the cluster so I/m not sure they understand where the transmission gets its signals from.
Let me know what I can do to help you
Sorry I can't say "replace this and it will all be fixed" but it sometimes takes testing to see where the problem lies.
Let me know if I can help