O.k.,what fails in most all cases and causes this fault here is the transmission range sensor.This sensor sends these signals:
- Provide a PARK/NEUTRAL start signal to the engine controller and the starter relay.
- Turn the Back-up lamps on when the transmission is in REVERSE and the engine (ignition) is on.
- Provide a transmission range signal to the instrument cluster.
When this sensor fails it will cause the display to flash like this here as the computer does not know what gear position the shifter has been shifted into.In this case the sensor needs replaced.This sensor should be located on the drivers side of the transmission as seen as #3 here.
I would have the fault codes read out/checked to see what codes are set using a scan tool that will plug in and communicate with all computers.Once this has been done any codes set will need to be diagnosed to help locate and repair this fault here.I suspect this sensor is the sensor that will need replaced.
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