# Using the Drain Converter during Oil Change window Draining the converter is a procedure for oil change support where as much as possible waste oil is drained from the converter by the push of a button without the mechanic getting into contact with waste oil.
| How to open Diagnosis - Oil Change:
Click Service > Oil change in the main window.
| Converter draining is available as of transmission software version D5.2.0.0. The transmission software version used is displayed in the report.
| How to drain the converter:
A special oil drain plug in the transmission has to be opened up to transmission version D5.2.0.0 to drain the oil from the converter during the oil change of the DIWA.5 transmission. Therefore the mechanic inevitably comes into contact with waste oil. The Drain function allows the oil in the converter to be drained at the push of a button. The following conditions must be met for oil change support / converter draining: Transmission in neutral position Engine is running Vehicle not running Transmission oil temperature > 60°C All reasons that prevent the converter from being drained are visualized. Once all conditions are met, the message "Converter draining possible" will be displayed. Click: Start Flushing, to start draining of the converter. The complete draining procedure takes approx. 2 minutes. The current status of converter draining: "Not possible (conditions not met) / Converter draining activated / Converter draining completed successfully" is displayed. Please observe the additional information on transmission oil change: Servicing Manual
| Information displayed:
Possible obstacles
Symbol | Description |
| The supply voltage is too low. The voltage for converter draining must be at least 18V. |
| The transmission is not in neutral mode. N key must be actuated. |
| The engine speed cannot be recorded. The engine speed sensor is defective or a connector has been removed. |
| Engine is not running. The engine must be running for converter draining. |
| The vehicle standstill condition cannot be detected. The output speed sensor is defective or a connector has been removed. |
| The vehicle's speed is too high. The vehicle must be in standstill for converter draining. |
| The oil temperature in the transmission cannot be detected. The temperature sensor(s) is/are defective or a connector has been removed. The oil temperature in the transmission is too low for converter draining. The transmission oil temperature must be > 60°C. |
| The internal safety switch is not closed. The solenoid valves cannot be energized. |
| The PB solenoid valve is defective or a connector has been removed. The PB solenoid valve has been switched off by the software during the converter draining process. Converter draining has not been completed. |
| The WP solenoid valve is defective or a connector has been removed. The WP solenoid valve has been switched off by the software during the converter draining process. Converter draining has not been completed. |
| Unknown obstacle. |
Oil level Displays the current oil level in the transmission sump. Oil temperature (sump) Displays the current oil temperature in the transmission sump. Oil temperature (converter) Displays the current oil temperature in the converter. Operating status Displays the current operating status of the transmission control unit. It should be "drive program". Supply voltage The currently measured supply voltage of the transmission control unit in mV. Solenoid valve status Expert information Status of converter draining The converter status is displayed in a bit-coded manner. The following conditions are possible:
00 | Converter draining is not active. |
01 | Converter draining is active. |
02 | Converter draining interrupted. |
03 | Converter draining completed successfully. |
| Further topics:
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