SE_SMON; Prohibited combination of shift elements
â–¶ How to fix
Check the TCU and the software;
What you'll see
No driver-visible symptom recorded.
System reaction
Activate "Central Solenoid Disconnection Unit";
Diagnostic depth
Detection
The shift element safety monitor ( SE_SMON ) recognizes that during driving (n_Ab > 200 rpm) more than two shift elements are under excessively high current for a non-permissible length of time; Normal mode
Possible cause
Transmission shifts to neutral (gear loss) Retarder is no longer available;