CAN gear range selector E330 Unstable pushbutton signal from CAN gear selector switch
|  | Description
|  | Effects on the driving operation
|  | Possible causes
|  | Place of action
|  | Instruction
|  | Final function check
|  | Setting conditions of the event
|  | Test conditions of the event
|  | See also:
Description A stable signal could not be determined while detecting the current button signals over a prolonged period of time because the statuses are changing continuously. The status suggests contact bouncing of the electrical contacts of the buttons. Effects on the driving operation The transmission shifts to neutral. After applying neutral and re-engaging the gear, driving may be possible again. If not, replace the gear range selector. The limp-home switch allows activating the limp-home mode. Possible causes Loose contact at the buttons or soldering joints. Gear range selector defective. Contact bouncing of the buttons of the gear selector. Place of action No description available. Instruction Replace gear range selector. Final function check If the defective component cannot be clearly identified, you should try to reproduce the fault: Reinstall the component in the vehicle. Test the function. After the fault has been eliminated, the following steps have to be carried out: Conduct a test drive with function check. Read out the fault memory. Check the transmission for leaks. Perform a final visual inspection. These steps are necessary to ensure the entire vehicle functions. Setting conditions of the event No description available. Test conditions of the event No description available. See also:
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