Speedometer not functioning - 2004 Toyota Highlander

BAD GROUND MOST LIKELY

open the hood and find the speedometer cables according to your auto's manual, check to see if they are securely connected to the ports on back of speedometer. if this doesn't work. find the function button front of speedometer press and hold while starting engine, will enter function mode,press button repeatedly untill you come to auto. press and hold button untill "-" appears then release button , unit will show on screen,wait untill a line of zero's appear on screen then drive around untill you go over one mile, stop the car and press the function button again,the speedometer is now recalibrated this usually fixes many errors

Sounds like a bad speedometer sensor. Usually located on the transmission. The only way to fix the speedometer/odometer is to replace the sensor.

No I believe the speed ometer cable is broken.Dissconnect sppedometer cable from instrunent cluster,romove cable from back of speedometer &transmission case .romove speedometer from sppedometer cable housing if broken replace with new & make sure you grease cable when installing back in cale housing reconnect to transmission &back of speedometer.keep posting

Make sure all wires to the transmission are connected. From there, change out the VSS (Vehicle Speed Sensor) On the transmission's tailshaft. If it's still not working, you need to open up the dash and make sure it's all well connected.

The first thing you can always do is check your fuses. there might a blown fuse that need replacement.The 1990 Legacy has a mechanical speedometer . The speed sensor is a read switch in the speedometer head itself. So if your speedometer is functioning ( needle working properly ) then the internal read switch is defective. That requires replacing the entire speedometer OR it can be a defective connection between the speedometer and the ECU.If the speedometer is not working, then you can have a defective speedometer, cable, speedometer cable adapter ( on the tranny ) or internal speedo gear in the tranny. Thanks. you can rate this solution and show your appreciation.

Check wire harness that goes to the trunk lid , it's attached to the left hinge . If it has broken and shorted wire , it may make your custer to go craizy.

mechanical problem within the speedometer - can be repaired- consult local Saturn dealer

Check output speed sensor to see if functioning correctly.If working correctly ,suspect an Instrument Panel Control Module or an ECU issue .