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      09-12-2025, 10:58 PM   #1
cur8
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Transmission malfunction and start off assistance inactive

One day I left my car idling in N, and went into somewhere for 3 minutes and came back to a transmission malfunction and start off assistance inactive.

The DCT went to sleep

I then replaced the battery and reprogrammed it properly. Looked over CAN wiring, transmission main connector, transmission wiring harness, looked over DME, and nothing happened. Checked alternator and starter, both were good. I also replaced the engine ground but still wouldn’t wake up the DCT.

Car starts fine on first cycle
Present codes: CDB4 CDB8 CD9D CD9E CDB0 D357 A0B1 D116 A73D E094

Any ideas?
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      06-17-2026, 06:52 PM   #2
tdott
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Quote:
Originally Posted by cur8 View Post
One day I left my car idling in N, and went into somewhere for 3 minutes and came back to a transmission malfunction and start off assistance inactive.

The DCT went to sleep

I then replaced the battery and reprogrammed it properly. Looked over CAN wiring, transmission main connector, transmission wiring harness, looked over DME, and nothing happened. Checked alternator and starter, both were good. I also replaced the engine ground but still wouldn’t wake up the DCT.

Car starts fine on first cycle
Present codes: CDB4 CDB8 CD9D CD9E CDB0 D357 A0B1 D116 A73D E094

Any ideas?
Did you ever find the issue?
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      06-29-2026, 11:27 PM   #3
cur8
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Quote:
Originally Posted by tdott View Post
Did you ever find the issue?
I ended up replacing the whole dct unit (; but all works well now, and has been 7 months.
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