Automatic Transmission Not Shifting? Fix It!

Hi,

Due to an electronic malfunction caused by oil on the connectors at the multi-function switch and other components, the emergency program has been activated in the transmission. I drove approximately 100 km in this emergency mode without noticing any significant issues.

I cleaned the connections with brake cleaner, without opening them.

Today, I tried clearing the error codes in the transmission's memory. The emergency program is also active.

BUT:

It's not shifting anymore. It's stuck in first gear. It doesn't work with the Tiptronic either. I drove around for a few more blocks and then read the error codes, but there are no entries.

How should I proceed?

Best regards,
Thomas.

Hi,

Is the engine control unit (ECU) properly coded?

Does the transmission control unit display the position of the gear selector, specifically whether it's in "D" or another position?

I can't tell if the encoding is correct. Where can I check?

The diagnostic software indicates that gang 1 has been created.

But I'm wondering why no new errors are being written to memory when I've deleted the old ones.

Does anyone know quickly how I can reactivate the emergency program?

Best regards,
Thomas.

Quote:

I can't determine whether the encoding is correct. Where can I look?

In the engine control unit. VCDS provides direct assistance during coding; simply hover your mouse cursor over the relevant field for help.

Quote:

The diagnostic software says that gang 1 has been created.

You need to distinguish between the position of the gear selector and the actual gear that is engaged.
Do you also have the display in the instrument cluster that shows the selector lever position? Does it remain in first gear when you shift through the different selector lever positions?

It's possible that your position sensor is malfunctioning and sending a signal to the transmission control unit (TCU) indicating that first gear is selected. In this case, the TCU will prevent shifting to higher gears because it believes that you have locked out the higher gears (e.g., for driving uphill).

I only see the indicator for the gear selector position on the display next to the speedometer when it's in P, R, or N.

If I set it to "D", the indicator disappears. However, the letters and numbers are still visible, just without the bar behind them.

When switching to Tiptronic mode, "1" is highlighted. The manual upshift function does not work.

Im Diagnosesoftware sehe ich den 1. Gang installed.



Best regards,
Thomas.