CAN-pushbutton switch E330 Instable pushbutton redundancy signals - bouncing of the contacts
|  | Description
|  | Effects on the driving operation
|  | Possible causes
|  | Place of action
|  | Instruction
|  | Setting conditions of the event
|  | Testing conditions of the event
|  | Final function check
Description A stable signal could not be determined while detecting the current button redundancy signals over a prolonged period of time because the statuses are changing continuously (contact bouncing of the button redundancy signals). 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. Place of action No description available. Instruction Replace gear range selector. Setting conditions of the event No description available. Testing conditions of the event No description available. 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 function. After the fault has been eliminated, the following steps have to be carried out: Conduct a test drive with function check. Read the fault memory Check transmission for leaks. Perform a final visual inspection. These steps are necessary to ensure the entire vehicle functions correctly.
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